Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 1,349,774	$ 967,315
Air traffic liability	566,856		$ 429,618
DOT—Domestic
Disaggregation of Revenue [Line Items]
Total operating revenues	1,175,653	827,054
DOT—Latin America
Disaggregation of Revenue [Line Items]
Total operating revenues	174,121	140,261
Total passenger revenues
Disaggregation of Revenue [Line Items]
Total operating revenues	1,327,473	949,744
Fare
Disaggregation of Revenue [Line Items]
Total operating revenues	608,861	418,418
Non-fare
Disaggregation of Revenue [Line Items]
Total operating revenues	718,612	531,326
Other
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 22,301	$ 17,571