Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 1,197,104	$ 1,258,543	$ 3,743,530	$ 4,040,789
DOT—Domestic
Disaggregation of Revenue [Line Items]
Total operating revenues	1,084,576	1,091,157	3,320,511	3,511,446
DOT—Latin America
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 112,528	$ 167,386	$ 423,019	$ 529,343