Sion Airport — Sion, Switzerland

Sion Airport, designated SIR, is located in the Swiss canton of Valais, serving the city of Sion in the Rhone Valley surrounded by the Alps. The airport operates as a dual-use facility, hosting both civilian aviation and a Swiss Air Force base, reflecting its strategic mountain location. SIR supports general aviation, glider operations, and seasonal charter flights connecting travelers to the region's renowned ski resorts and alpine scenery. The dramatic mountain backdrop makes approaches to Sion notably challenging, requiring specialized pilot training. Beyond aviation, the Valais region draws visitors year-round for winter sports, hiking, and vineyard tourism, with SIR serving as a gateway for this alpine destination.