Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$ 4,286,875	$ 4,062,042
Accumulated depreciation	(1,733,201)	(1,659,634)
Property and equipment, net	2,553,674	2,402,408
Flight equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	3,609,393	3,506,134
Ground equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	71,018	70,092
Leasehold improvements, facilities and office equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	40,826	40,183
Aircraft modifications and projects in progress
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$ 565,638	$ 445,633

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, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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