5.5-Hour Flights: Southwest Launches Longest Domestic Flight Ever From Its Busiest Airport

Southwest Airlines is, by almost every measure, an enormous carrier. This is exemplified by the fact that, according to current scheduling data from Cirium, an aviation analytics company, it has scheduled 89,520 flights from Denver International Airport (DEN) this year. This makes it the busiest airport by departures, and it also has the most seats, with 14,635,842.