Only 60% Full: Southwest’s 11 Emptiest Routes From This Massive Airport [Map]

Denver International Airport (DEN) is Southwest Airlines’ top base by the number of flights operated. According to current scheduling data from Cirium, an aviation analytics company, the carrier penciled in atotal of 7,614 flights from the Colorado facility this August. This puts it comfortably ahead of Harry Reid International Airport (LAS) in Las Vegas, which had 7,114 flights.