Caravan purchase period.

No definition available.

Name:	srfm_CaravanPurchasePeriod
Namespace Prefix:	srfm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Commitments and contingencies.

+ References

No definition available.

+ Details

Name:	srfm_CommitmentsAndContingenciesLineItem
Namespace Prefix:	srfm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

License fee payable,

+ References

No definition available.

+ Details

Name:	srfm_LicenseFeePayable
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

License fee remaining payments.

+ References

No definition available.

+ Details

Name:	srfm_LicenseFeeRemainingPayments
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of agreements executed.

+ References

No definition available.

+ Details

Name:	srfm_NumberOfAgreementsExecuted
Namespace Prefix:	srfm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of caravans to be purchased..

+ References

No definition available.

+ Details

Name:	srfm_NumberOfCaravansToBePurchased
Namespace Prefix:	srfm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of operators and charter brokers.

+ References

No definition available.

+ Details

Name:	srfm_NumberOfOperatorsAndCharterBrokers
Namespace Prefix:	srfm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Outstanding federal excise tax liability including accrued penalties and interest.

+ References

No definition available.

+ Details

Name:	srfm_OutstandingFederalExciseTaxLiabilityIncludingAccruedPenaltiesAndInterest
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Outstanding payables settled.

+ References

No definition available.

+ Details

Name:	srfm_OutstandingPayablesSettled
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Outstanding property tax liability including penalties and interest.

+ References

No definition available.

+ Details

Name:	srfm_OutstandingPropertyTaxLiabilityIncludingPenaltiesAndInterests
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

prepaid issuance common stock

+ References

No definition available.

+ Details

Name:	srfm_PrepaidIssuanceCommonStock
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Remaining commitments

+ References

No definition available.

+ Details

Name:	srfm_RemainingCommitments
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Remaining license fee payable.

+ References

No definition available.

+ Details

Name:	srfm_RemainingLicenseFeePayable
Namespace Prefix:	srfm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Term of agreement.

+ References

No definition available.

+ Details

Name:	srfm_TermOfAgreement
Namespace Prefix:	srfm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Expenses incurred related to the lease of aircraft from outside third parties that are used in the entity's business operations.

+ References

No definition available.

+ Details

Name:	us-gaap_AircraftRental
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-1

+ Details

Name:	us-gaap_CapitalizedComputerSoftwareNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

+ Details

Name:	us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(6))
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Interest expense (income) directly attributable to an award in settlement of litigation.

+ References

+ Details

Name:	us-gaap_LitigationSettlementInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow associated with the development, modification or acquisition of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

+ Details

Name:	us-gaap_PaymentsForSoftware
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

+ Details

Name:	us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(15)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

+ Details

Name:	us-gaap_SalesAndExciseTaxPayableCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

+ Details

Name:	us-gaap_SharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_TypeOfArrangementAxis=srfm_SalesAndMarketingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=srfm_JetstreamAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=srfm_OfferInCompromiseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=srfm_TextronAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=srfm_AircraftPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_AircraftTypeAxis=srfm_CaravansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_AircraftTypeAxis=srfm_SpecificallyConfiguredCaravansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=srfm_PalantirJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srfm_PalantirTechnologiesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=srfm_SoftwareLicenseAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srfm_RisePartiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=srfm_AttorneysFeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=srfm_CourtCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies - Additional Information (Details)							1 Months Ended	12 Months Ended		84 Months Ended	109 Months Ended
	Jul. 02, 2025 OperatorsAndCharterBrokers	Oct. 10, 2022 USD ($)	Sep. 15, 2022 USD ($) Caravan	Nov. 08, 2021 USD ($)	May 18, 2021 USD ($) Agreement	May 15, 2018 USD ($)	Jul. 31, 2025 OperatorsAndCharterBrokers	Dec. 31, 2025 USD ($) shares	Dec. 31, 2024 USD ($)	Jun. 30, 2030 USD ($)	Jun. 30, 2030 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Commitments And Contingencies [Line Item]
Aggregate purchase amount								$ 5,936,000	$ 11,758,000
Tax commitment including penalties and interest						$ 1,900,000
Outstanding federal excise tax liability including accrued penalties and interest								9,900,000	7,700,000
Outstanding property tax liability including penalties and interest.								900,000	1,600,000
Sales and Marketing Agreement
Commitments And Contingencies [Line Item]
License fees payable			$ 40,000,000
Jetstream Agreement \| Minimum
Commitments And Contingencies [Line Item]
Usage obligation		$ 120,000,000
Jetstream Agreement \| Maximum
Commitments And Contingencies [Line Item]
Aggregate purchase amount		$ 450,000,000
Offer-In-Compromise ("OIC")
Commitments And Contingencies [Line Item]
Payments on historical excise tax liabilities												$ 34,000
Textron Agreement
Commitments And Contingencies [Line Item]
License fees payable			$ 60,000,000										$ 12,500,000
License fee remaining payments								9,500,000
Remaining license fee payable								35,000,000
Textron Agreement \| Aircraft Purchase Agreement \| Caravans
Commitments And Contingencies [Line Item]
Option to purchase additional caravans, Number \| Caravan			90
Aggregate purchase amount			$ 297,000,000
Textron Agreement \| Aircraft Purchase Agreement \| Specifically Configured Caravans
Commitments And Contingencies [Line Item]
License fees payable								2,000,000
Option to purchase additional caravans, Number \| Caravan			26
Caravan purchase period			7 years
Textron Agreement \| Aircraft Purchase Agreement \| Specifically Configured Caravans \| Minimum
Commitments And Contingencies [Line Item]
Aggregate purchase amount			$ 85,800,000
Palantir Joint Venture
Commitments And Contingencies [Line Item]
Number of Operators and Charter Brokers \| OperatorsAndCharterBrokers	135
Palantir Technologies Inc
Commitments And Contingencies [Line Item]
Outstanding payables settled								$ 11,800,000
Shares issued \| shares								3,769,385
Remaining commitments								$ 12,600,000
prepaid issuance common stock								5,100,000
Palantir Technologies Inc \| Software License Agreements
Commitments And Contingencies [Line Item]
Number of agreements executed \| Agreement					4
Term of agreement					9 years
Total software cost					$ 11,000,000
Payment for software service								$ 3,400,000	$ 3,100,000
Number of Operators and Charter Brokers \| OperatorsAndCharterBrokers							135
Palantir Technologies Inc \| Software License Agreements \| Scenario Forecast
Commitments And Contingencies [Line Item]
Total software cost										$ 30,700,000	$ 41,700,000
Rise Parties
Commitments And Contingencies [Line Item]
Payment of actual damages				$ 1,000,000
Pre-judgment interest				200,000
Rise Parties \| Attorneys' Fees
Commitments And Contingencies [Line Item]
Litigation settlement, expense				60,000.00
Rise Parties \| Court Costs
Commitments And Contingencies [Line Item]
Litigation settlement, expense				$ 3,000.000