Up To 13 Daily Flights: Southwest Airlines’ Top 10 Routes This Month

Southwest Airlines is the world’s fourth-largest carrier by September flights. Examining its entire network using Cirium Diio data shows that it has 3,733 daily services (given its former use of the 737-300, I like that number). It is surpassed by American Airlines (5,867), Delta Air Lines (4,960), and United Airlines (4,793).