London Stansted Airport

London Stansted is the United Kingdom's fourth-busiest airport and Europe's largest single-runway airport by passenger traffic, serving 212 destinations across 39 airlines from one strip of 10,003 ft (3,049 m) asphalt. STN's high route count from a minimal runway footprint is structural: the airport is Ryanair's largest base globally, with 40+ based aircraft and a schedule engineered to extract maximum turnarounds from the airfield's slot allocation. Ryanair accounts for roughly 80% of Stansted's seats and treats STN as its primary London station, operating high-frequency point-to-point service across the European periphery — Ireland, Iberia, Italy, Central Europe, the Balkans, Morocco, and Scandinavia. easyJet, Jet2, TUI, Pegasus, and Emirates' fifth-freedom Dubai service complete the schedule. The airport's low-cost focus is intentional: since 1991 STN has been positioned as London's LCC alternative to the slot-constrained Heathrow and Gatwick, and the Norman Foster-designed terminal (opened 1991) was one of the first purpose-built low-cost terminals anywhere in the world — a single airy hall with a satellite pier reached by airside transit. STN sits at 348 ft (106 m) elevation 64 km northeast of central London in Essex, the furthest of London's major airports from the city center. The single runway's capacity is limited by planning permission rather than infrastructure; MAG (the airport owner) has repeatedly proposed a second runway, most recently under the mid-2020s masterplan that was scaled back following planning-inspectorate review. Stansted is the largest airport in the world operating with a single runway by a substantial margin, and its ability to sustain 212 destinations on one strip is a direct consequence of Ryanair's ultra-short-turn operational model.