RNAS Yeovilton — Yeovil, Somerset, United Kingdom

YEO identifies Royal Naval Air Station Yeovilton, a military airfield in Somerset, England, rather than a civilian passenger airport. Operated by the Royal Navy, RNAS Yeovilton serves as the home of the Fleet Air Arm, hosting helicopter squadrons and fixed-wing training units critical to British naval aviation. The base includes extensive runway infrastructure, hangars, and the Fleet Air Arm Museum, which draws visitors interested in naval aviation history. Unlike typical IATA-coded airports, Yeovilton does not handle scheduled commercial flights; its code exists primarily for aviation identification and occasional civil use during air shows. YEO remains an active defense installation supporting rotary and fixed-wing operations for the United Kingdom's armed forces.