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Property and Equipment - Schedule of Property Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Long-Lived Assets Held-for-Sale [Line Items]
Total property and equipment	$ 4,125,851	$ 4,137,143
Less accumulated depreciation and amortization	(1,178,315)	(1,067,194)
Property and equipment, net	2,947,536	3,069,949
Airline
Long-Lived Assets Held-for-Sale [Line Items]
Flight equipment	3,584,212	3,345,458
Computer hardware and software	339,441	320,432
Land and buildings/leasehold improvements	83,304	66,115
Other property and equipment	118,894	115,043
Sunseeker Resort (1)
Long-Lived Assets Held-for-Sale [Line Items]
Land and buildings/leasehold improvements	0	255,201
Other property and equipment	$ 0	$ 34,894

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount, before accumulated depreciation, of long-lived, depreciable flight asset owned and right-of-use asset from finance lease.

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