Interesting: 5 Unique United Airlines Routes That Don’t Use The Carrier’s Hubs

Traditionally, legacy carriers like American full-service network carrier United Airlines have operated on a model of hub-and-spoke flying, with large, dynamic routes all funneled through large hubs. For anyone who has been a long-time loyal United flyer, these facilities are unrecognizable and include some of America's largest airports, like Houston's George Bush Intercontinental Airport (IAH) and Denver International Airport (DEN).