Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The carrying amounts and estimated fair values of the Company’s debt are as follows (in millions):

	December 31, 2024				December 31, 2023
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Secured debt:
Pre-delivery Credit Facilities	$	329	$	333	$	312	$	316
Building notes	12		12		16		16
Unsecured debt:
Affinity card advance purchase of miles	100		98		80		76
PSP Promissory Notes	66		62		66		57
Total debt	$	507	$	505	$	474	$	465

Schedule of Fair Value of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The tables below present disclosures about the fair value of assets and liabilities measured at fair value on a recurring basis in the Company’s consolidated financial statements (in millions):

		Fair Value Measurements as of December 31, 2024
Description	Balance Sheet Classification	Total		Level 1		Level 2		Level 3
Cash, cash equivalents and restricted cash	Cash and cash equivalents	$	740	$	740	$	—	$	—

		Fair Value Measurements as of December 31, 2023
Description	Balance Sheet Classification	Total		Level 1		Level 2		Level 3
Cash, cash equivalents and restricted cash	Cash and cash equivalents	$	609	$	609	$	—	$	—