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[Member] Republic Airways Holdings, Inc. 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Assets, Intangible Assets, Policy [Policy Text Block] Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Net increase in cash and restricted cash Net increase in cash and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Other revenue Other Revenue [Member] Other Revenue [Member] Inactive period before expiration of mileage credits Inactive Period Before Expiration Of Mileage Credits Inactive Period Before Expiration Of Mileage Credits Statistical Measurement [Domain] Statistical Measurement [Domain] Postretirement benefits other than pension benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits 2031 and thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Underlying Asset Class [Axis] Underlying Asset Class [Axis] Interest Rate Margin Three Interest Rate Margin Three [Member] Interest Rate Margin Three Restricted cash included in restricted cash and short-term investments Restricted Cash, Current Related Party Transaction [Axis] Related Party Transaction [Axis] Emerging markets Emerging Markets [Member] Emerging Markets [Member] Asset Class [Axis] Asset Class [Axis] Impairment Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Leases [Abstract] Leases [Abstract] Basic EPS: Earnings Per Share, Basic [Abstract] Adjustments to other benefit-related items Collective Bargaining Agreement, Adjustments to Other Benefit Related Items Collective Bargaining Agreement, Adjustments to Other Benefit Related Items Loyalty revenue - marketing services Loyalty Program, Marketing Services [Member] Loyalty Program, Marketing Services [Member] Restricted Cash and Short-term Investments Restricted Cash And Short Term Investments, Policy [Policy Text Block] Restricted Cash And Short Term Investments, Policy Increase in accounts payable 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Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Private Party Antitrust Actions Related to the Northeast Alliance Private Party Antitrust Actions Related to the Northeast Alliance [Member] Private Party Antitrust Actions Related to the Northeast Alliance Quarterly principal amortization payable Debt Instrument, Quarterly Principal Amortization Debt Instrument, Quarterly Principal Amortization Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Amounts reclassified from AOCI, net of tax Total reclassifications for the period, net of tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Other Deferred Tax Assets, Other Total liabilities Liability, Defined Benefit Plan 2028 Purchase Obligation, to be Paid, Year Three Accounting Policies [Abstract] Accounting Policies [Abstract] Loyalty program liability Loyalty Program [Member] Loyalty Program [Member] Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] PSP2 Promissory Note Payroll Support Program Promissory Note Two, CARES Act [Member] Payroll Support Program Promissory Note Two, CARES Act Total fair value of stock-settled during the year Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Pay vs Performance Disclosure [Line Items] Total operating lease liabilities Operating lease liabilities Operating Lease, Liability Fuel Financing Schedule Of Short-Term Loan and Note Payable [Table Text Block] Schedule Of Short-Term Loan and Note Payable Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Amortization of assets Finance Lease, Right-of-Use Asset, Amortization Airline Destination [Domain] Airline Destination [Domain] Other liabilities Other Liabilities, Noncurrent Auditor [Line Items] Auditor [Line Items] Schedule of Equity Investments Investment [Table Text Block] Goodwill impairment Goodwill, Impairment Loss Nondeductible meals and other nondeductible employee benefits Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals And Employee Benefits, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals And Employee Benefits, Amount Intercompany equity transfer Intercompany Equity Transfer Intercompany Equity Transfer Less: Current maturities Long-Term Debt, Current Maturities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Cash Cash Funded percentage Deferred Compensation Cash-Based Arrangements, Funded Percentage Deferred 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[Axis] Organization Basis of Presentation and Summary of Significant Accounting Policies [Table] Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Table] Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Private equity Private Equity Funds [Member] Expected amortization expense in 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Four Other investments Other Investments 2026 Finance Lease, Liability, to be Paid, Year One Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Preferred Stock Purchase Rights Warrant [Member] ROU assets acquired through operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Defined benefit plan, assumptions used for expected long-term rate of return on plan assets, term Defined Benefit Plan, Assumptions Used For Expected Long-Term Rate of Return on Plan Assets, Actual Returns Achieved, Term Defined Benefit Plan, Assumptions Used For Expected Long-Term Rate of Return on Plan Assets, Actual Returns Achieved, Term Fuel financing Balance at beginning of year Balance at end of year Short-Term Bank Loans and Notes Payable Level 2     Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Domestic state and local income taxes, net of federal effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Carrying value, equity method investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Operating Leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] 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Goodwill Goodwill Components of Lease Expense Lease, Cost [Table Text Block] Fair value of plan assets Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets LTV Multiplier Debt Instrument Collateral Covenant Loan To Value Ratio Multiplier Debt Instrument, Collateral Covenant, Loan-to-Value Ratio Multiplier Lease Contractual Term [Axis] Lease Contractual Term [Axis] Federal Deferred Federal Income Tax Expense (Benefit) Auditor Name Auditor Name Flight equipment Flight Equipment, Gross Conversion of common stock (in dollars per share) Debt Instrument, Convertible, Stock Price Trigger Supplemental information: Supplemental Cash Flow Information [Abstract] Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Grant Date Fair Value, 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