Popular Pairs: Southwest Airlines’ 16 Routes With 10 Or More Daily Flights

Southwest is the fourth-largest airline serving the US. On May 30, the day I researched and wrote this article, the carrier had 4,285 non-stop flights and 17% of the country’s short-haul services. Southwest’s activity has risen 5% compared to the same day in the pre-pandemic May 2019, which was also a Thursday.