Most active airlines + daily flights
*American Airlines: 4,999 (U.S.)
*Delta Air Lines: 4,715 (U.S.)
*Southwest Airlines: 4,192 (U.S.)
*United Airlines: 3,909 (U.S.)
*Ryanair: 3,076 (Ireland)
*China Eastern Airlines: 2,222 (China)
*China Southern Airlines: 2,120 (China)
*IndiGo: 1,885 (India)
*Turkish Airlines: 1,809 (Turkey)
*Beijing Airlines: 1,593 (China)
