St. Gallen–Altenrhein Airport (IATA: ACH, ICAO: LSZR) is a small airport in Altenrhein in the Canton of St. Gallen, Switzerland next to Lake Constance. It is the home base for People's airline. The airport is located in Eastern Switzerland, bordering with Austria, Germany and the Principality of Liechtenstein. It has fast connections to the motorway, economically important regions such as Bregenz, Vaduz and St.Gallen and the well-known ski resorts Lech, Zürs, Klosters and Davos. The Airport St.Gallen-Altenrhein's operator is (FBO) and its handling agent.