0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Stockholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - EMPLOYEE BENEFIT PLANS link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - SEGMENTS link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - EARNINGS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - SEGMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - EARNINGS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - REVENUE RECOGNITION - Passenger Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - REVENUE RECOGNITION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - REVENUE RECOGNITION - Loyalty Program Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - REVENUE RECOGNITION - Other Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - REVENUE RECOGNITION - Revenue by Geographic Region (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - FAIR VALUE MEASUREMENTS - Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - INVESTMENTS - Equity Investments Ownership and Carrying Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - INVESTMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - DEBT - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - DEBT - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - DEBT - Fair Value of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - EMPLOYEE BENEFIT PLANS (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - COMMITMENTS AND CONTINGENCIES - Aircraft Commitments by Year (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - COMMITMENTS AND CONTINGENCIES - Aircraft Commitments by Fleet Type (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - SEGMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - SEGMENTS - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - EARNINGS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - EARNINGS PER SHARE - Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink