American Airlines, Delta Air Lines, and United Airlines have exited 74 airports since 2020.
Some of the airports are in the Essential Air Service program and are now served by a new airline.
In September 2022, the company's research revealed American Airlines, Delta Air Lines, and United Airlines had exited 59 airports.
In total, American has left 19 airports, Delta has exited 17, and United has departed 38.
American, Delta, and United have all cut routes in recent months, citing poor performance and the pilot shortage as contributing factors.