SOUTHWEST AIRLINES CO COM USD1 revenue for the last year amounted to 26.09 B USD, the most of which — 23.64 B USD — came from its highest performing source at the moment, Passenger, the year earlier bringing 21.41 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought SOUTHWEST AIRLINES CO COM USD1 25.00 B USD, and the year before that — 23.00 B USD.