Airlines put their best seats on long-haul routes because they’re the most lucrative ones, obviously. But logistics sometimes dictate that these aircraft spend time flying additional routes in between. US Airways, for instance, puts its 767s on Philadelphia-Charlotte year-round. The aircraft also end up flying from Philly to the Caribbean (San Juan, Cancun, and St. Thomas) at various times of the year.

If you’re split on which airline to fly, US Airways offers more comfort for the money on these routes. The carrier should be top of mind for United Mileage Plus members, who can earn and redeem miles on these routes.