<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e74a2-bb36-7c34-83ff-2795a2b7ac28,g:d06c2dec-4ce5-4d6f-aaa2-55b54fe26d41-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/CondensedConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="simple" xlink:href="vtol-20260630.xsd#CondensedConsolidatedStatementsofChangesinStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/CondensedConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e74a2-bcac-78f4-b535-9ef392f6b96d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e74a2-bcac-7c83-af00-fbfac36b9cee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e74a2-bcac-78f4-b535-9ef392f6b96d" xlink:to="loc_us-gaap_StatementTable_019e74a2-bcac-7c83-af00-fbfac36b9cee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-7daa-b2f7-5a6dd3c2fe70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e74a2-bcac-7c83-af00-fbfac36b9cee" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-7daa-b2f7-5a6dd3c2fe70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7daa-b2f7-5a6dd3c2fe70_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-7daa-b2f7-5a6dd3c2fe70" xlink:to="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7daa-b2f7-5a6dd3c2fe70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-7daa-b2f7-5a6dd3c2fe70" xlink:to="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e74a2-bcac-7413-a4ee-6856f103fea4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:to="loc_us-gaap_CommonStockMember_019e74a2-bcac-7413-a4ee-6856f103fea4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e74a2-bcac-7077-86ea-a4584ad1ab49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e74a2-bcac-7077-86ea-a4584ad1ab49" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e74a2-bcac-71ba-a463-793f67177180" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:to="loc_us-gaap_RetainedEarningsMember_019e74a2-bcac-71ba-a463-793f67177180" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019e74a2-bcac-7e85-874f-d4253c33ab79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019e74a2-bcac-7e85-874f-d4253c33ab79" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e74a2-bcac-713b-98b8-8133092adcea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e74a2-bcac-713b-98b8-8133092adcea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_019e74a2-bcac-70ab-a67e-de607d2cffa8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7284-a66b-7b9ba0999e25" xlink:to="loc_us-gaap_NoncontrollingInterestMember_019e74a2-bcac-70ab-a67e-de607d2cffa8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e74a2-bcac-78f4-b535-9ef392f6b96d" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e74a2-bcac-7dfb-b3fc-49db9b931032" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e74a2-bcac-7dfb-b3fc-49db9b931032" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e74a2-bcac-7a2b-87ce-ee7e57c24403" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e74a2-bcac-7a2b-87ce-ee7e57c24403" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019e74a2-bcac-7db5-a529-5c4fc4d68608" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019e74a2-bcac-7db5-a529-5c4fc4d68608" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019e74a2-bcac-7735-8bfc-5e01e7c6bdad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019e74a2-bcac-7735-8bfc-5e01e7c6bdad" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_019e74a2-bcac-7082-884f-3e8b57d6997a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_019e74a2-bcac-7082-884f-3e8b57d6997a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019e74a2-bcac-7a24-8ce5-ca06cdb6cb8b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019e74a2-bcac-7a24-8ce5-ca06cdb6cb8b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_019e74a2-bcac-7c8b-bb8b-e87231ee0611" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_019e74a2-bcac-7c8b-bb8b-e87231ee0611" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest_019e74a2-bcac-7113-b358-ca6408a964b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest_019e74a2-bcac-7113-b358-ca6408a964b4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_019e74a2-bcac-744f-a718-0493329a491e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_DividendsCommonStock_019e74a2-bcac-744f-a718-0493329a491e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_APICCapitalContributionToAffiliates_019f427d-f279-7552-965c-a404f08e5616" xlink:href="vtol-20260630.xsd#vtol_APICCapitalContributionToAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_vtol_APICCapitalContributionToAffiliates_019f427d-f279-7552-965c-a404f08e5616" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e74a2-bcac-778e-b043-5bba69000d28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e74a2-bcac-786a-819a-41eba8d50477" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e74a2-bcac-778e-b043-5bba69000d28" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e74a2-bcac-718f-942f-7901afcfefeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e74a2-bcac-7bc2-8751-3c34311ccf60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/REVENUESScheduleofDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#REVENUESScheduleofDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/REVENUESScheduleofDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e74a2-bcac-7a0d-ba27-4ab7dd2a3b3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e74a2-bcac-77e4-b67d-6f6e90033853" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e74a2-bcac-7a0d-ba27-4ab7dd2a3b3a" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e74a2-bcac-77e4-b67d-6f6e90033853" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcac-7542-962f-55b41b4deb6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e74a2-bcac-77e4-b67d-6f6e90033853" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcac-7542-962f-55b41b4deb6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcac-7542-962f-55b41b4deb6c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcac-7542-962f-55b41b4deb6c" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcac-7542-962f-55b41b4deb6c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcac-79e4-b09d-be81300bd896" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcac-7542-962f-55b41b4deb6c" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcac-79e4-b09d-be81300bd896" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcac-70a5-aacf-f2ee2c3dd7bc" xlink:href="vtol-20260630.xsd#vtol_OffshoreEnergyServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcac-79e4-b09d-be81300bd896" xlink:to="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcac-70a5-aacf-f2ee2c3dd7bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_GovernmentServicesMember_019e74a2-bcac-7084-99ca-dd486b4b6d85" xlink:href="vtol-20260630.xsd#vtol_GovernmentServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcac-79e4-b09d-be81300bd896" xlink:to="loc_vtol_GovernmentServicesMember_019e74a2-bcac-7084-99ca-dd486b4b6d85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcac-7a7a-9cbe-107669cda47a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcac-79e4-b09d-be81300bd896" xlink:to="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcac-7a7a-9cbe-107669cda47a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e74a2-bcac-72eb-a05d-434e33338656" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e74a2-bcac-7a0d-ba27-4ab7dd2a3b3a" xlink:to="loc_us-gaap_Revenues_019e74a2-bcac-72eb-a05d-434e33338656" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/REVENUESNarrativeDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#REVENUESNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/REVENUESNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019e74a2-bcac-7e1b-a65a-1fb25541918b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019e74a2-bcac-7e1b-a65a-1fb25541918b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_019e74a2-bcac-7319-bb83-60e8f07fd258" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019e74a2-bcac-7e1b-a65a-1fb25541918b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_019e74a2-bcac-7319-bb83-60e8f07fd258" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_019e74a2-bcac-7a75-859f-8f375d735782" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_019e74a2-bcac-7a75-859f-8f375d735782" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_019e74a2-bcac-7630-ae28-de39c6752a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_019e74a2-bcac-7630-ae28-de39c6752a2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019e74a2-bcac-740b-b128-99a33b7132f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019e74a2-bcac-740b-b128-99a33b7132f6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/REVENUESNarrativeDetails_1" xlink:type="simple" xlink:href="vtol-20260630.xsd#REVENUESNarrativeDetails_1"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/REVENUESNarrativeDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019e74a2-bcac-7e1b-a65a-1fb25541918b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019e74a2-bcac-7e1b-a65a-1fb25541918b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_019e74a2-bcac-7a75-859f-8f375d735782" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_019e74a2-bcac-7a75-859f-8f375d735782" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_019e74a2-bcac-7630-ae28-de39c6752a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_019e74a2-bcac-7630-ae28-de39c6752a2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019e74a2-bcac-740b-b128-99a33b7132f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019e74a2-bcac-7792-91f5-9efd24234933" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019e74a2-bcac-740b-b128-99a33b7132f6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/RELATEDPARTYTRANSACTIONSNarrativeDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#RELATEDPARTYTRANSACTIONSNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/RELATEDPARTYTRANSACTIONSNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-7abe-8748-6b4090246941" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7448-9a19-81d90d10ce1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-7abe-8748-6b4090246941" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7448-9a19-81d90d10ce1b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e74a2-bcac-78a2-a8b7-ebd7e266bf88" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7448-9a19-81d90d10ce1b" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e74a2-bcac-78a2-a8b7-ebd7e266bf88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019e74a2-bcac-78a2-a8b7-ebd7e266bf88_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e74a2-bcac-78a2-a8b7-ebd7e266bf88" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019e74a2-bcac-78a2-a8b7-ebd7e266bf88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019e74a2-bcac-768b-8e5a-ff0441ea894a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e74a2-bcac-78a2-a8b7-ebd7e266bf88" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019e74a2-bcac-768b-8e5a-ff0441ea894a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_CougarHelicoptersIncMember_019e74a2-bcac-7c77-9740-90f43bd2224b" xlink:href="vtol-20260630.xsd#vtol_CougarHelicoptersIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019e74a2-bcac-768b-8e5a-ff0441ea894a" xlink:to="loc_vtol_CougarHelicoptersIncMember_019e74a2-bcac-7c77-9740-90f43bd2224b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019e74a2-bcac-738e-9203-e3ecf43f7744" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7448-9a19-81d90d10ce1b" xlink:to="loc_dei_LegalEntityAxis_019e74a2-bcac-738e-9203-e3ecf43f7744" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019e74a2-bcac-738e-9203-e3ecf43f7744_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019e74a2-bcac-738e-9203-e3ecf43f7744" xlink:to="loc_dei_EntityDomain_019e74a2-bcac-738e-9203-e3ecf43f7744_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019e74a2-bcac-7397-ad4a-aa9956c1ae65" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019e74a2-bcac-738e-9203-e3ecf43f7744" xlink:to="loc_dei_EntityDomain_019e74a2-bcac-7397-ad4a-aa9956c1ae65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_VIHAviationGroupLtd.Member_019e74a2-bcac-721a-9048-6ba2e73f6ead" xlink:href="vtol-20260630.xsd#vtol_VIHAviationGroupLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019e74a2-bcac-7397-ad4a-aa9956c1ae65" xlink:to="loc_vtol_VIHAviationGroupLtd.Member_019e74a2-bcac-721a-9048-6ba2e73f6ead" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-749b-9939-f8bad5149d3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7448-9a19-81d90d10ce1b" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-749b-9939-f8bad5149d3b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-749b-9939-f8bad5149d3b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-749b-9939-f8bad5149d3b" xlink:to="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-749b-9939-f8bad5149d3b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-7579-aff6-9c2d4a905af5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-749b-9939-f8bad5149d3b" xlink:to="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-7579-aff6-9c2d4a905af5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e74a2-bcac-775f-a169-2a87b4be1d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-7579-aff6-9c2d4a905af5" xlink:to="loc_us-gaap_RelatedPartyMember_019e74a2-bcac-775f-a169-2a87b4be1d4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_EquityMethodInvestmentVotingInterest_019e74a2-bcac-7639-afc0-6f9e7826af63" xlink:href="vtol-20260630.xsd#vtol_EquityMethodInvestmentVotingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-7abe-8748-6b4090246941" xlink:to="loc_vtol_EquityMethodInvestmentVotingInterest_019e74a2-bcac-7639-afc0-6f9e7826af63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_EquityMethodInvestmentEconomicInterest_019e74a2-bcac-71a5-9c92-19f72e94c29d" xlink:href="vtol-20260630.xsd#vtol_EquityMethodInvestmentEconomicInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-7abe-8748-6b4090246941" xlink:to="loc_vtol_EquityMethodInvestmentEconomicInterest_019e74a2-bcac-71a5-9c92-19f72e94c29d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndOtherReceivablesNetCurrent_019e74a2-bcac-77c8-ad85-f07d77ba4a8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsAndOtherReceivablesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-7abe-8748-6b4090246941" xlink:to="loc_us-gaap_AccountsAndOtherReceivablesNetCurrent_019e74a2-bcac-77c8-ad85-f07d77ba4a8a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/RELATEDPARTYTRANSACTIONSScheduleofRevenuefromRelatedPartiesDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#RELATEDPARTYTRANSACTIONSScheduleofRevenuefromRelatedPartiesDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/RELATEDPARTYTRANSACTIONSScheduleofRevenuefromRelatedPartiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-77a7-b254-4f65fd8059ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7cd5-86c4-6acd1e4cf991" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-77a7-b254-4f65fd8059ed" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7cd5-86c4-6acd1e4cf991" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-7e26-be7f-20d546f31fab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019e74a2-bcac-7cd5-86c4-6acd1e4cf991" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-7e26-be7f-20d546f31fab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-7e26-be7f-20d546f31fab_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-7e26-be7f-20d546f31fab" xlink:to="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-7e26-be7f-20d546f31fab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-793e-8cad-c8b3001aff2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019e74a2-bcac-7e26-be7f-20d546f31fab" xlink:to="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-793e-8cad-c8b3001aff2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019e74a2-bcac-78da-8a09-d81f57aa6f53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019e74a2-bcac-793e-8cad-c8b3001aff2c" xlink:to="loc_us-gaap_RelatedPartyMember_019e74a2-bcac-78da-8a09-d81f57aa6f53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e74a2-bcac-71ff-a59e-f46035e9b31c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-77a7-b254-4f65fd8059ed" xlink:to="loc_us-gaap_Revenues_019e74a2-bcac-71ff-a59e-f46035e9b31c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_019e74a2-bcac-7326-8d23-a5707f4042d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019e74a2-bcac-77a7-b254-4f65fd8059ed" xlink:to="loc_us-gaap_LeaseCost_019e74a2-bcac-7326-8d23-a5707f4042d0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/DEBTScheduleofDebtDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#DEBTScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/DEBTScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-73fc-8ad7-ac3fa3c52cb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-74fd-9b3c-68403674c302" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-73fc-8ad7-ac3fa3c52cb1" xlink:to="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-74fd-9b3c-68403674c302" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7532-8751-0124c987db65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-74fd-9b3c-68403674c302" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7532-8751-0124c987db65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7532-8751-0124c987db65_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7532-8751-0124c987db65" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7532-8751-0124c987db65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-75a5-adbd-b74115667cf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7532-8751-0124c987db65" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-75a5-adbd-b74115667cf0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e74a2-bcac-71d5-b9c4-d1dec9fd01cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-75a5-adbd-b74115667cf0" xlink:to="loc_us-gaap_SeniorNotesMember_019e74a2-bcac-71d5-b9c4-d1dec9fd01cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019e74a2-bcac-72fa-b34a-9a6589b66e61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-75a5-adbd-b74115667cf0" xlink:to="loc_us-gaap_SecuredDebtMember_019e74a2-bcac-72fa-b34a-9a6589b66e61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7587-8105-82fa8f20d534" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-74fd-9b3c-68403674c302" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7587-8105-82fa8f20d534" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7587-8105-82fa8f20d534_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7587-8105-82fa8f20d534" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7587-8105-82fa8f20d534_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7dfe-99a8-515f6598dd1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7587-8105-82fa8f20d534" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7dfe-99a8-515f6598dd1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-7ae9-b38c-6bd9847ffdc3" xlink:href="vtol-20260630.xsd#vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7dfe-99a8-515f6598dd1e" xlink:to="loc_vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-7ae9-b38c-6bd9847ffdc3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-7a86-98cb-78b035fca482" xlink:href="vtol-20260630.xsd#vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7dfe-99a8-515f6598dd1e" xlink:to="loc_vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-7a86-98cb-78b035fca482" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_UKSARDebtMember_019e74a2-bcac-7812-9e3c-9f30fb303426" xlink:href="vtol-20260630.xsd#vtol_UKSARDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7dfe-99a8-515f6598dd1e" xlink:to="loc_vtol_UKSARDebtMember_019e74a2-bcac-7812-9e3c-9f30fb303426" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_IRCGDebtMember_019e74a2-bcac-7217-998b-4928bfdb5052" xlink:href="vtol-20260630.xsd#vtol_IRCGDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7dfe-99a8-515f6598dd1e" xlink:to="loc_vtol_IRCGDebtMember_019e74a2-bcac-7217-998b-4928bfdb5052" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019e74a2-bcac-7d43-8028-4b262f2667d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-73fc-8ad7-ac3fa3c52cb1" xlink:to="loc_us-gaap_LongTermDebt_019e74a2-bcac-7d43-8028-4b262f2667d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019e74a2-bcac-7a93-9418-c38b4f121931" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-73fc-8ad7-ac3fa3c52cb1" xlink:to="loc_us-gaap_LongTermDebtCurrent_019e74a2-bcac-7a93-9418-c38b4f121931" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019e74a2-bcac-7562-8351-c75a3d3715c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-73fc-8ad7-ac3fa3c52cb1" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019e74a2-bcac-7562-8351-c75a3d3715c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e74a2-bcac-7220-a8d6-3e9791ee0076" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-73fc-8ad7-ac3fa3c52cb1" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e74a2-bcac-7220-a8d6-3e9791ee0076" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/DEBTNarrativeDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#DEBTNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/DEBTNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-713b-9c74-1e4e7d6c7734" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-713b-9c74-1e4e7d6c7734" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7d1e-b1ed-0b72f747ad63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-713b-9c74-1e4e7d6c7734" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7d1e-b1ed-0b72f747ad63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7d1e-b1ed-0b72f747ad63_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7d1e-b1ed-0b72f747ad63" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7d1e-b1ed-0b72f747ad63_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7d1e-b1ed-0b72f747ad63" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-764d-b38d-147842c2ea30" xlink:href="vtol-20260630.xsd#vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:to="loc_vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-764d-b38d-147842c2ea30" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-732e-9c7e-c7be6bcea986" xlink:href="vtol-20260630.xsd#vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:to="loc_vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-732e-9c7e-c7be6bcea986" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_UKSARDebtMember_019e74a2-bcac-7151-acfd-f314e87cf171" xlink:href="vtol-20260630.xsd#vtol_UKSARDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:to="loc_vtol_UKSARDebtMember_019e74a2-bcac-7151-acfd-f314e87cf171" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_IRCGDebtMember_019e74a2-bcac-7b0f-b8c7-24404f3d5d9a" xlink:href="vtol-20260630.xsd#vtol_IRCGDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:to="loc_vtol_IRCGDebtMember_019e74a2-bcac-7b0f-b8c7-24404f3d5d9a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_AssetBackedRevolvingCreditFacilityMember_019e74a2-bcac-7761-a679-3f142ee24b6b" xlink:href="vtol-20260630.xsd#vtol_AssetBackedRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-737d-92fd-ec43442ec742" xlink:to="loc_vtol_AssetBackedRevolvingCreditFacilityMember_019e74a2-bcac-7761-a679-3f142ee24b6b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7e50-b50c-d7631bf50d13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-713b-9c74-1e4e7d6c7734" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7e50-b50c-d7631bf50d13" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e50-b50c-d7631bf50d13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7e50-b50c-d7631bf50d13" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e50-b50c-d7631bf50d13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e9a-9079-90381bebab83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7e50-b50c-d7631bf50d13" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e9a-9079-90381bebab83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e74a2-bcac-737a-8364-f0e06cfd8978" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e9a-9079-90381bebab83" xlink:to="loc_us-gaap_SeniorNotesMember_019e74a2-bcac-737a-8364-f0e06cfd8978" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019e74a2-bcac-714f-a5f4-f5db153e217e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e9a-9079-90381bebab83" xlink:to="loc_us-gaap_SecuredDebtMember_019e74a2-bcac-714f-a5f4-f5db153e217e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e74a2-bcac-7036-8842-5b74e1f269b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7e9a-9079-90381bebab83" xlink:to="loc_us-gaap_LineOfCreditMember_019e74a2-bcac-7036-8842-5b74e1f269b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e74a2-bcac-783b-884c-5dcd1e1c25e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e74a2-bcac-713b-9c74-1e4e7d6c7734" xlink:to="loc_us-gaap_CreditFacilityAxis_019e74a2-bcac-783b-884c-5dcd1e1c25e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e74a2-bcac-783b-884c-5dcd1e1c25e1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e74a2-bcac-783b-884c-5dcd1e1c25e1" xlink:to="loc_us-gaap_CreditFacilityDomain_019e74a2-bcac-783b-884c-5dcd1e1c25e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e74a2-bcac-7a7f-a84e-41aaac69aa2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e74a2-bcac-783b-884c-5dcd1e1c25e1" xlink:to="loc_us-gaap_CreditFacilityDomain_019e74a2-bcac-7a7f-a84e-41aaac69aa2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e74a2-bcac-769a-a44b-16e465e940c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e74a2-bcac-7a7f-a84e-41aaac69aa2a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e74a2-bcac-769a-a44b-16e465e940c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e74a2-bcac-736b-9930-7d600c2a3287" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e74a2-bcac-736b-9930-7d600c2a3287" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e74a2-bcac-7bc0-b62f-c727356f35cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e74a2-bcac-7bc0-b62f-c727356f35cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019e74a2-bcac-7125-85da-f78b4cc006f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019e74a2-bcac-7125-85da-f78b4cc006f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019e74a2-bcac-77eb-92e7-d3dd1c53f947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019e74a2-bcac-77eb-92e7-d3dd1c53f947" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019e74a2-bcac-74e2-8050-e66a531f6769" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_019e74a2-bcac-74e2-8050-e66a531f6769" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_019e74a2-bcac-71d3-984f-3c114add77aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_019e74a2-bcac-71d3-984f-3c114add77aa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_019fa27a-f08a-7148-b7ee-b6afaa9a3772" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_019fa27a-f08a-7148-b7ee-b6afaa9a3772" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_LineOfCreditFacilityPercentGuaranteed_019e74a2-bcac-7313-bec1-9a6f844257a3" xlink:href="vtol-20260630.xsd#vtol_LineOfCreditFacilityPercentGuaranteed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_vtol_LineOfCreditFacilityPercentGuaranteed_019e74a2-bcac-7313-bec1-9a6f844257a3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e74a2-bcac-7a12-9e1d-e1570818bef6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e74a2-bcac-7a12-9e1d-e1570818bef6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_LineOfCreditFacilityIncreaseLimit_019e74a2-bcac-774f-bb39-cf260c2541dc" xlink:href="vtol-20260630.xsd#vtol_LineOfCreditFacilityIncreaseLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_vtol_LineOfCreditFacilityIncreaseLimit_019e74a2-bcac-774f-bb39-cf260c2541dc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019e74a2-bcac-7cac-b83a-3a9b54d8c86a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_LongTermDebt_019e74a2-bcac-7cac-b83a-3a9b54d8c86a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019e74a2-bcac-7066-b7de-f94e0caf6d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e74a2-bcac-74da-806c-8a166245b838" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019e74a2-bcac-7066-b7de-f94e0caf6d0c" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/FAIRVALUEDISCLOSURESDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#FAIRVALUEDISCLOSURESDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/FAIRVALUEDISCLOSURESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019e74a2-bcac-7600-8192-98800f5ba47b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019e74a2-bcac-7888-b93a-32efd57062d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019e74a2-bcac-7600-8192-98800f5ba47b" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019e74a2-bcac-7888-b93a-32efd57062d5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e74a2-bcac-78d5-ae3a-ffe9c9552334" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019e74a2-bcac-7888-b93a-32efd57062d5" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e74a2-bcac-78d5-ae3a-ffe9c9552334" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-78d5-ae3a-ffe9c9552334_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e74a2-bcac-78d5-ae3a-ffe9c9552334" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-78d5-ae3a-ffe9c9552334_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-71f6-8687-dacc9183d954" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e74a2-bcac-78d5-ae3a-ffe9c9552334" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-71f6-8687-dacc9183d954" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019e74a2-bcac-75bb-9bac-c128900dc8ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-71f6-8687-dacc9183d954" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019e74a2-bcac-75bb-9bac-c128900dc8ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e74a2-bcac-714b-8672-40105049fcad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-71f6-8687-dacc9183d954" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e74a2-bcac-714b-8672-40105049fcad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019e74a2-bcac-7955-b7db-9b2bbb01bc32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e74a2-bcac-71f6-8687-dacc9183d954" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019e74a2-bcac-7955-b7db-9b2bbb01bc32" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7ced-aca7-2279200f0f45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019e74a2-bcac-7888-b93a-32efd57062d5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7ced-aca7-2279200f0f45" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7ced-aca7-2279200f0f45_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7ced-aca7-2279200f0f45" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7ced-aca7-2279200f0f45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7edc-b74b-e8b15979c1ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e74a2-bcac-7ced-aca7-2279200f0f45" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7edc-b74b-e8b15979c1ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e74a2-bcac-7426-b3ed-69f40ac73453" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7edc-b74b-e8b15979c1ed" xlink:to="loc_us-gaap_SeniorNotesMember_019e74a2-bcac-7426-b3ed-69f40ac73453" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019e74a2-bcac-74da-9c03-179dfde1e3bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e74a2-bcac-7edc-b74b-e8b15979c1ed" xlink:to="loc_us-gaap_SecuredDebtMember_019e74a2-bcac-74da-9c03-179dfde1e3bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7b9c-aa11-a4a2bd355f04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019e74a2-bcac-7888-b93a-32efd57062d5" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7b9c-aa11-a4a2bd355f04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7b9c-aa11-a4a2bd355f04_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7b9c-aa11-a4a2bd355f04" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-7b9c-aa11-a4a2bd355f04_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-76f0-a8fc-698d56f4b589" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e74a2-bcac-7b9c-aa11-a4a2bd355f04" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-76f0-a8fc-698d56f4b589" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-76e6-bd82-5367029261c0" xlink:href="vtol-20260630.xsd#vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-76f0-a8fc-698d56f4b589" xlink:to="loc_vtol_SixPointSevenFiveZeroPercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-76e6-bd82-5367029261c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-7cff-ae36-734de8d3c37e" xlink:href="vtol-20260630.xsd#vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-76f0-a8fc-698d56f4b589" xlink:to="loc_vtol_SixPointEightSevenFivePercentSeniorNotesDueMarchTwentyTwentyEightMember_019e74a2-bcac-7cff-ae36-734de8d3c37e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_UKSARDebtMember_019e74a2-bcac-7049-b78f-42cba0152449" xlink:href="vtol-20260630.xsd#vtol_UKSARDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-76f0-a8fc-698d56f4b589" xlink:to="loc_vtol_UKSARDebtMember_019e74a2-bcac-7049-b78f-42cba0152449" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_IRCGDebtMember_019e74a2-bcac-709a-b858-059d6c236da9" xlink:href="vtol-20260630.xsd#vtol_IRCGDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e74a2-bcac-76f0-a8fc-698d56f4b589" xlink:to="loc_vtol_IRCGDebtMember_019e74a2-bcac-709a-b858-059d6c236da9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_019e74a2-bcac-7a48-bd3a-5571626a4e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019e74a2-bcac-7600-8192-98800f5ba47b" xlink:to="loc_us-gaap_LongTermDebtFairValue_019e74a2-bcac-7a48-bd3a-5571626a4e6f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019e74a2-bcac-7caf-9a37-df85765281f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019e74a2-bcac-7600-8192-98800f5ba47b" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_019e74a2-bcac-7caf-9a37-df85765281f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e74a2-bcac-727c-b145-458990b99a98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019e74a2-bcac-7600-8192-98800f5ba47b" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e74a2-bcac-727c-b145-458990b99a98" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019e74a2-bcac-7264-8a03-f9beca257b40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019e74a2-bcac-7600-8192-98800f5ba47b" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_019e74a2-bcac-7264-8a03-f9beca257b40" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#COMMITMENTSANDCONTINGENCIESDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_019e74a2-bcac-7658-965c-a15901bd5942" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_019e74a2-bcac-7e7a-9ce3-2628894dc9ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e74a2-bcac-7658-965c-a15901bd5942" xlink:to="loc_us-gaap_OtherCommitmentsTable_019e74a2-bcac-7e7a-9ce3-2628894dc9ee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_AircraftPurchaseContractsTypeAxis_019e74a2-bcac-7012-b89a-8e0351ba3aa7" xlink:href="vtol-20260630.xsd#vtol_AircraftPurchaseContractsTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e74a2-bcac-7e7a-9ce3-2628894dc9ee" xlink:to="loc_vtol_AircraftPurchaseContractsTypeAxis_019e74a2-bcac-7012-b89a-8e0351ba3aa7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_AircraftPurchaseContractsTypeDomain_019e74a2-bcac-7012-b89a-8e0351ba3aa7_default" xlink:href="vtol-20260630.xsd#vtol_AircraftPurchaseContractsTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vtol_AircraftPurchaseContractsTypeAxis_019e74a2-bcac-7012-b89a-8e0351ba3aa7" xlink:to="loc_vtol_AircraftPurchaseContractsTypeDomain_019e74a2-bcac-7012-b89a-8e0351ba3aa7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_AircraftPurchaseContractsTypeDomain_019e74a2-bcac-7060-88cb-8ea4d7f38369" xlink:href="vtol-20260630.xsd#vtol_AircraftPurchaseContractsTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vtol_AircraftPurchaseContractsTypeAxis_019e74a2-bcac-7012-b89a-8e0351ba3aa7" xlink:to="loc_vtol_AircraftPurchaseContractsTypeDomain_019e74a2-bcac-7060-88cb-8ea4d7f38369" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_AircraftMember_019e74a2-bcac-7088-8092-8229493ef19b" xlink:href="vtol-20260630.xsd#vtol_AircraftMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vtol_AircraftPurchaseContractsTypeDomain_019e74a2-bcac-7060-88cb-8ea4d7f38369" xlink:to="loc_vtol_AircraftMember_019e74a2-bcac-7088-8092-8229493ef19b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcac-7ab7-8237-cc785a3252a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e74a2-bcac-7e7a-9ce3-2628894dc9ee" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcac-7ab7-8237-cc785a3252a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7ab7-8237-cc785a3252a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcac-7ab7-8237-cc785a3252a5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7ab7-8237-cc785a3252a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7d15-af71-549bcbe748ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcac-7ab7-8237-cc785a3252a5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7d15-af71-549bcbe748ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_Aw189HeavyHelicoptersMember_019e74a2-bcac-7952-a30e-193158eb40e6" xlink:href="vtol-20260630.xsd#vtol_Aw189HeavyHelicoptersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7d15-af71-549bcbe748ea" xlink:to="loc_vtol_Aw189HeavyHelicoptersMember_019e74a2-bcac-7952-a30e-193158eb40e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_EL9AircraftMember_019e74a2-bcac-7863-bf7b-31bb0d152d95" xlink:href="vtol-20260630.xsd#vtol_EL9AircraftMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7d15-af71-549bcbe748ea" xlink:to="loc_vtol_EL9AircraftMember_019e74a2-bcac-7863-bf7b-31bb0d152d95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_H135LightTwinHelicoptersMember_019e74a2-bcac-7fc1-aa99-3e7f19b5c6c3" xlink:href="vtol-20260630.xsd#vtol_H135LightTwinHelicoptersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcac-7d15-af71-549bcbe748ea" xlink:to="loc_vtol_H135LightTwinHelicoptersMember_019e74a2-bcac-7fc1-aa99-3e7f19b5c6c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_019e74a2-bcac-71ed-b739-7cd06cfa4c3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e74a2-bcac-7658-965c-a15901bd5942" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_019e74a2-bcac-71ed-b739-7cd06cfa4c3c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_PurchaseCommitmentNumberOfHelicopters_019e74a2-bcac-745e-9f7f-21f487298b66" xlink:href="vtol-20260630.xsd#vtol_PurchaseCommitmentNumberOfHelicopters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e74a2-bcac-7658-965c-a15901bd5942" xlink:to="loc_vtol_PurchaseCommitmentNumberOfHelicopters_019e74a2-bcac-745e-9f7f-21f487298b66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_PurchaseCommitmentAdditionalNumberOfHelicopters_019e74a2-bcac-70bd-a423-60cb504d42bd" xlink:href="vtol-20260630.xsd#vtol_PurchaseCommitmentAdditionalNumberOfHelicopters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e74a2-bcac-7658-965c-a15901bd5942" xlink:to="loc_vtol_PurchaseCommitmentAdditionalNumberOfHelicopters_019e74a2-bcac-70bd-a423-60cb504d42bd" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/STOCKHOLDERSEQUITYDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#STOCKHOLDERSEQUITYDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/STOCKHOLDERSEQUITYDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_019e74a2-bcac-777e-9d35-2765f8e80d2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019e74a2-bcac-70cd-8d4f-da05bdf49a59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_019e74a2-bcac-777e-9d35-2765f8e80d2e" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019e74a2-bcac-70cd-8d4f-da05bdf49a59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-797d-b668-601e81df498a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019e74a2-bcac-70cd-8d4f-da05bdf49a59" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-797d-b668-601e81df498a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-797d-b668-601e81df498a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-797d-b668-601e81df498a" xlink:to="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-797d-b668-601e81df498a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7d05-9872-cfb34dbe3f28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e74a2-bcac-797d-b668-601e81df498a" xlink:to="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7d05-9872-cfb34dbe3f28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019e74a2-bcac-7365-84cd-e7b8d0f45548" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7d05-9872-cfb34dbe3f28" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019e74a2-bcac-7365-84cd-e7b8d0f45548" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019e74a2-bcac-730d-b627-ada9edd7f969" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7d05-9872-cfb34dbe3f28" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019e74a2-bcac-730d-b627-ada9edd7f969" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019e74a2-bcac-7a69-8dd7-7b3568ad7e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7d05-9872-cfb34dbe3f28" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019e74a2-bcac-7a69-8dd7-7b3568ad7e7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e74a2-bcac-7626-8f35-bf313cfc5b18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e74a2-bcac-7d05-9872-cfb34dbe3f28" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e74a2-bcac-7626-8f35-bf313cfc5b18" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_019e74a2-bcac-777e-9d35-2765f8e80d2e" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e74a2-bcac-71bb-ab3b-fddd98a579ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e74a2-bcac-71bb-ab3b-fddd98a579ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_019e74a2-bcac-7bdd-9de0-0fb86d0d27dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_019e74a2-bcac-7bdd-9de0-0fb86d0d27dd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_019e74a2-bcac-7192-87f5-830bf5cb6d00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_019e74a2-bcac-7192-87f5-830bf5cb6d00" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_019e74a2-bcac-715a-b582-7320cb9bccaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_019e74a2-bcac-715a-b582-7320cb9bccaf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e74a2-bcac-7487-af43-bdbabb1e886c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e74a2-bcac-7487-af43-bdbabb1e886c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019e74a2-bcac-7534-a384-461f0a568ca9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019e74a2-bcac-7bc1-8907-c253c2e8ef43" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019e74a2-bcac-7534-a384-461f0a568ca9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e74a2-bcac-72e9-a4ec-1fd41525ef72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/SEGMENTSScheduleofOperatingPerformanceDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#SEGMENTSScheduleofOperatingPerformanceDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/SEGMENTSScheduleofOperatingPerformanceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-724c-a63b-14a2b88e224a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-724c-a63b-14a2b88e224a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7139-940e-076b6134b418" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-724c-a63b-14a2b88e224a" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7139-940e-076b6134b418" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7139-940e-076b6134b418_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7139-940e-076b6134b418" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7139-940e-076b6134b418_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7674-b805-52c758049c9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7139-940e-076b6134b418" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7674-b805-52c758049c9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-79e2-8005-349fdc45f8a6" xlink:href="vtol-20260630.xsd#vtol_OffshoreEnergyServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7674-b805-52c758049c9b" xlink:to="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-79e2-8005-349fdc45f8a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_GovernmentServicesMember_019e74a2-bcad-782c-9df8-94726c0d2ed3" xlink:href="vtol-20260630.xsd#vtol_GovernmentServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7674-b805-52c758049c9b" xlink:to="loc_vtol_GovernmentServicesMember_019e74a2-bcad-782c-9df8-94726c0d2ed3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7c54-8065-e0fa72af0f4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7674-b805-52c758049c9b" xlink:to="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7c54-8065-e0fa72af0f4f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_019e74a2-bcad-79de-854a-6752ea71dff9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7674-b805-52c758049c9b" xlink:to="loc_us-gaap_CorporateMember_019e74a2-bcad-79de-854a-6752ea71dff9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e74a2-bcad-7e47-abaa-a14d913bf7b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_Revenues_019e74a2-bcad-7e47-abaa-a14d913bf7b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019e74a2-bcad-74d3-a43a-f528e41fbe02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019e74a2-bcad-74d3-a43a-f528e41fbe02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_RepairsAndMaintenanceExpense_019e74a2-bcad-7e29-84c0-1a9563454fe0" xlink:href="vtol-20260630.xsd#vtol_RepairsAndMaintenanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_vtol_RepairsAndMaintenanceExpense_019e74a2-bcad-7e29-84c0-1a9563454fe0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralInsuranceExpense_019e74a2-bcad-7c0e-8ac5-680dc936501b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralInsuranceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_us-gaap_GeneralInsuranceExpense_019e74a2-bcad-7c0e-8ac5-680dc936501b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_FuelOperatingExpense_019e74a2-bcad-79a9-bc51-9c1956d5d29f" xlink:href="vtol-20260630.xsd#vtol_FuelOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_vtol_FuelOperatingExpense_019e74a2-bcad-79a9-bc51-9c1956d5d29f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_LeasedInEquipmentExpense_019e74a2-bcad-7a89-ae55-effdefc121f6" xlink:href="vtol-20260630.xsd#vtol_LeasedInEquipmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_vtol_LeasedInEquipmentExpense_019e74a2-bcad-7a89-ae55-effdefc121f6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_019e74a2-bcad-7e15-bfdb-d0131d346b6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_019e74a2-bcad-7e15-bfdb-d0131d346b6c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_OtherCostAndExpenseOperatingAdjusted_019e74a2-bcad-71d8-b21c-c61d15006ccd" xlink:href="vtol-20260630.xsd#vtol_OtherCostAndExpenseOperatingAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_019e74a2-bcad-7255-9791-85fec02357a4" xlink:to="loc_vtol_OtherCostAndExpenseOperatingAdjusted_019e74a2-bcad-71d8-b21c-c61d15006ccd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_GeneralAndAdministrativeExpenseAdjusted_019e74a2-bcad-7fd0-b5d7-e1b1afeaf2c6" xlink:href="vtol-20260630.xsd#vtol_GeneralAndAdministrativeExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_vtol_GeneralAndAdministrativeExpenseAdjusted_019e74a2-bcad-7fd0-b5d7-e1b1afeaf2c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019e74a2-bcad-719a-a683-fa6bb56d1f71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019e74a2-bcad-719a-a683-fa6bb56d1f71" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019e74a2-bcad-7950-b4bd-611828f8067b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_CostsAndExpenses_019e74a2-bcad-7950-b4bd-611828f8067b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_019e74a2-bcad-7683-ac7e-833ab35dc4c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_019e74a2-bcad-7683-ac7e-833ab35dc4c6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019e74a2-bcad-7254-98bc-4b8dba65ba5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019e74a2-bcad-7254-98bc-4b8dba65ba5f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e74a2-bcad-7f45-ad9a-605ca9832f8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-770b-b067-a6a5180f589e" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e74a2-bcad-7f45-ad9a-605ca9832f8d" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/SEGMENTSScheduleOfReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#SEGMENTSScheduleOfReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/SEGMENTSScheduleOfReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7596-b0cc-eda548fd7316" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7596-b0cc-eda548fd7316" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7149-99d3-dae1c98d3986" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7596-b0cc-eda548fd7316" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7149-99d3-dae1c98d3986" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7149-99d3-dae1c98d3986_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7149-99d3-dae1c98d3986" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7149-99d3-dae1c98d3986_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7b1c-a7f8-289c2a27ef14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7149-99d3-dae1c98d3986" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7b1c-a7f8-289c2a27ef14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-78ed-9eb5-f6b00f53b1d3" xlink:href="vtol-20260630.xsd#vtol_OffshoreEnergyServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7b1c-a7f8-289c2a27ef14" xlink:to="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-78ed-9eb5-f6b00f53b1d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_GovernmentServicesMember_019e74a2-bcad-7187-9d83-a3066ded439b" xlink:href="vtol-20260630.xsd#vtol_GovernmentServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7b1c-a7f8-289c2a27ef14" xlink:to="loc_vtol_GovernmentServicesMember_019e74a2-bcad-7187-9d83-a3066ded439b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7b41-a750-c48992557eee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7b1c-a7f8-289c2a27ef14" xlink:to="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7b41-a750-c48992557eee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_019e74a2-bcad-744a-8c5f-cabd7c2a0322" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7b1c-a7f8-289c2a27ef14" xlink:to="loc_us-gaap_CorporateMember_019e74a2-bcad-744a-8c5f-cabd7c2a0322" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e74a2-bcad-7218-8bdb-64095b802f09" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e74a2-bcad-7218-8bdb-64095b802f09" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating_019e74a2-bcad-737e-bd7a-162dd1628622" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndDividendIncomeOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_InterestAndDividendIncomeOperating_019e74a2-bcad-737e-bd7a-162dd1628622" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019e74a2-bcad-7b8e-a56b-2d470ec2f624" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019e74a2-bcad-7b8e-a56b-2d470ec2f624" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019e74a2-bcad-7f22-b218-23efa7528762" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019e74a2-bcad-7f22-b218-23efa7528762" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e74a2-bcad-7d1a-9a64-d5f1d887d2b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e74a2-bcad-7d1a-9a64-d5f1d887d2b5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019e74a2-bcad-7b59-a8f4-01a6afe55f3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019e74a2-bcad-7b59-a8f4-01a6afe55f3e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e74a2-bcad-734e-873e-6cf2ad81fca5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7f65-8b38-b3d8821cb796" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e74a2-bcad-734e-873e-6cf2ad81fca5" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/SEGMENTSScheduleofDepreciationAndAmortizationExpenseByOperatingSegmentDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#SEGMENTSScheduleofDepreciationAndAmortizationExpenseByOperatingSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/SEGMENTSScheduleofDepreciationAndAmortizationExpenseByOperatingSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7185-92c9-ee15c508ed85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-788b-917f-9e23d25f17af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7185-92c9-ee15c508ed85" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-788b-917f-9e23d25f17af" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7528-be4e-5c9a6dd80b5c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-788b-917f-9e23d25f17af" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7528-be4e-5c9a6dd80b5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7528-be4e-5c9a6dd80b5c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7528-be4e-5c9a6dd80b5c" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7528-be4e-5c9a6dd80b5c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-796a-9166-caf83126556d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7528-be4e-5c9a6dd80b5c" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-796a-9166-caf83126556d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-7513-b7e4-467b2fc099ca" xlink:href="vtol-20260630.xsd#vtol_OffshoreEnergyServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-796a-9166-caf83126556d" xlink:to="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-7513-b7e4-467b2fc099ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_GovernmentServicesMember_019e74a2-bcad-7a4c-afe8-dab01294b816" xlink:href="vtol-20260630.xsd#vtol_GovernmentServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-796a-9166-caf83126556d" xlink:to="loc_vtol_GovernmentServicesMember_019e74a2-bcad-7a4c-afe8-dab01294b816" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7056-b71c-c35dab7c5b34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-796a-9166-caf83126556d" xlink:to="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7056-b71c-c35dab7c5b34" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_019e74a2-bcad-7e4c-9d94-dede0ce174b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-796a-9166-caf83126556d" xlink:to="loc_us-gaap_CorporateMember_019e74a2-bcad-7e4c-9d94-dede0ce174b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019e74a2-bcad-74ad-8c8a-1181a7e2ab45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7185-92c9-ee15c508ed85" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019e74a2-bcad-74ad-8c8a-1181a7e2ab45" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_019e74a2-bcad-7f74-82d0-9a71b6ddf4ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7185-92c9-ee15c508ed85" xlink:to="loc_us-gaap_AdjustmentForAmortization_019e74a2-bcad-7f74-82d0-9a71b6ddf4ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_019e74a2-bcad-7505-85fe-4de0c2c3a79a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-7185-92c9-ee15c508ed85" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_019e74a2-bcad-7505-85fe-4de0c2c3a79a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/SEGMENTSScheduleofCapitalexpendituresbysegmentAndLonglivedassetsbyoperatingsegmentsDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#SEGMENTSScheduleofCapitalexpendituresbysegmentAndLonglivedassetsbyoperatingsegmentsDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/SEGMENTSScheduleofCapitalexpendituresbysegmentAndLonglivedassetsbyoperatingsegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-77bd-acfa-3ce44a98b53f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7e90-965d-fca31ed22bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-77bd-acfa-3ce44a98b53f" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7e90-965d-fca31ed22bb0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7ba9-b903-8d2f48a8a595" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7e90-965d-fca31ed22bb0" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7ba9-b903-8d2f48a8a595" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7ba9-b903-8d2f48a8a595_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7ba9-b903-8d2f48a8a595" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7ba9-b903-8d2f48a8a595_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e74a2-bcad-7c89-952e-6b8a86ac1fa9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e74a2-bcad-7ba9-b903-8d2f48a8a595" xlink:to="loc_us-gaap_SegmentDomain_019e74a2-bcad-7c89-952e-6b8a86ac1fa9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_TotalSegmentMember_019e74a2-bcad-7df7-a311-d2bcbcf042fe" xlink:href="vtol-20260630.xsd#vtol_TotalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7c89-952e-6b8a86ac1fa9" xlink:to="loc_vtol_TotalSegmentMember_019e74a2-bcad-7df7-a311-d2bcbcf042fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-7e85-90cf-3f4cef484512" xlink:href="vtol-20260630.xsd#vtol_OffshoreEnergyServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vtol_TotalSegmentMember_019e74a2-bcad-7df7-a311-d2bcbcf042fe" xlink:to="loc_vtol_OffshoreEnergyServicesMember_019e74a2-bcad-7e85-90cf-3f4cef484512" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_GovernmentServicesMember_019e74a2-bcad-7dd1-9a63-38ac49cb5258" xlink:href="vtol-20260630.xsd#vtol_GovernmentServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vtol_TotalSegmentMember_019e74a2-bcad-7df7-a311-d2bcbcf042fe" xlink:to="loc_vtol_GovernmentServicesMember_019e74a2-bcad-7dd1-9a63-38ac49cb5258" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7212-b462-72c3454c0f87" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vtol_TotalSegmentMember_019e74a2-bcad-7df7-a311-d2bcbcf042fe" xlink:to="loc_us-gaap_AllOtherSegmentsMember_019e74a2-bcad-7212-b462-72c3454c0f87" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateMember_019e74a2-bcad-751b-b505-67b8363b64c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e74a2-bcad-7c89-952e-6b8a86ac1fa9" xlink:to="loc_us-gaap_CorporateMember_019e74a2-bcad-751b-b505-67b8363b64c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcad-7898-aac4-b747ce7586c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e74a2-bcad-7e90-965d-fca31ed22bb0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcad-7898-aac4-b747ce7586c7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcad-7898-aac4-b747ce7586c7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcad-7898-aac4-b747ce7586c7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcad-7898-aac4-b747ce7586c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcad-7436-8cb6-ea2ea3be6b6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019e74a2-bcad-7898-aac4-b747ce7586c7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcad-7436-8cb6-ea2ea3be6b6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_019e74a2-bcad-7e0b-8f99-0d67df4a49b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019e74a2-bcad-7436-8cb6-ea2ea3be6b6e" xlink:to="loc_us-gaap_ConstructionInProgressMember_019e74a2-bcad-7e0b-8f99-0d67df4a49b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_019e74a2-bcad-7d72-8f6c-0db42a82d578" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-77bd-acfa-3ce44a98b53f" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_019e74a2-bcad-7d72-8f6c-0db42a82d578" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_PropertyPlantAndEquipmentAdjusted_019e74a2-bcad-7eb1-aacb-c1945548c846" xlink:href="vtol-20260630.xsd#vtol_PropertyPlantAndEquipmentAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e74a2-bcad-77bd-acfa-3ce44a98b53f" xlink:to="loc_vtol_PropertyPlantAndEquipmentAdjusted_019e74a2-bcad-7eb1-aacb-c1945548c846" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bristowgroup.com/role/SUBSEQUENTEVENTSDetails" xlink:type="simple" xlink:href="vtol-20260630.xsd#SUBSEQUENTEVENTSDetails"/>
  <link:definitionLink xlink:role="http://www.bristowgroup.com/role/SUBSEQUENTEVENTSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_019f888a-b6a3-7d4e-a6da-55b054b39541" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_019f888a-b6a3-717c-9014-fe98ad5cd0f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_019f888a-b6a3-7d4e-a6da-55b054b39541" xlink:to="loc_us-gaap_SubsequentEventTable_019f888a-b6a3-717c-9014-fe98ad5cd0f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019f888a-b6a3-7d66-b8b3-f165d0a09ca4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019f888a-b6a3-717c-9014-fe98ad5cd0f3" xlink:to="loc_dei_LegalEntityAxis_019f888a-b6a3-7d66-b8b3-f165d0a09ca4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019f888a-b6a3-7d66-b8b3-f165d0a09ca4_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019f888a-b6a3-7d66-b8b3-f165d0a09ca4" xlink:to="loc_dei_EntityDomain_019f888a-b6a3-7d66-b8b3-f165d0a09ca4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019f888a-b6a3-7c60-a558-c118bc295664" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019f888a-b6a3-7d66-b8b3-f165d0a09ca4" xlink:to="loc_dei_EntityDomain_019f888a-b6a3-7c60-a558-c118bc295664" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vtol_BerryAviationMember_019f888a-b6a3-7279-81a9-489d027bfa93" xlink:href="vtol-20260630.xsd#vtol_BerryAviationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019f888a-b6a3-7c60-a558-c118bc295664" xlink:to="loc_vtol_BerryAviationMember_019f888a-b6a3-7279-81a9-489d027bfa93" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019f888a-b6a3-7391-a749-47e3c553e665" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019f888a-b6a3-7d4e-a6da-55b054b39541" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019f888a-b6a3-7391-a749-47e3c553e665" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
