Which Airline Has The Largest Boeing 737 MAX Fleet In 2026?

Southwest Airlines (WN) stands out not only for having the fourth-largest mainline fleet in the world (around 810 aircraft), but it also has the world’s largest Boeing 737 family fleet. The Boeing 737 fleet is the world’s largest MAX-generation fleet (all MAX 8s). The MAX 8 is Boeing’s mid-sized Boeing 737 MAX family aircraft with an advertised range of 3,500 nautical miles, up from the 737-800’s advertised 2,935 nautical mile range.