Ryanair has one of the most extensive networks in the UK, operating out of approximately 20 different airports as of 2026. Its primary "mega-bases" are London Stansted (STN), which serves as its largest hub in the world, and London Luton (LTN). It also has a significant presence at major regional hubs including Manchester (MAN), Birmingham (BHX), Bristol (BRS), and Edinburgh (EDI). Other notable airports in the network include Liverpool John Lennon, Glasgow Prestwick, Leeds Bradford, East Midlands, and Bournemouth. Ryanair often chooses "secondary" airports like Belfast International or Teesside to keep landing fees low, which allows them to offer their signature ultra-low fares. Interestingly, Ryanair does not fly to London Heathrow or London City, as the high operating costs and lack of "quick turnaround" slots at these airports do not fit their efficient business model. For travelers, this means a Ryanair flight often involves a longer bus or train journey into the city center than a flight with a legacy carrier.