SOUTHWEST AIRLINES revenue for the last year amounted to 21.97 B CHF, the most of which — 19.90 B CHF — came from its highest performing source at the moment, Passenger, the year earlier bringing 19.80 B CHF. The greatest contribution to the revenue figure was made by United States — last year it brought SOUTHWEST AIRLINES 21.05 B CHF, and the year before that — 21.27 B CHF.