Sion Airport Sion Airport Sion Airport (Military: LSMS) is the airport of the city of Sion, Switzerland and is located 2.5 km southwest of Sion city in the Rhone Valley. The airport opened in 1935. The following airlines offer seasonal and charter flights at Sion Airport: The nearest larger international airport is Geneva Airport, approx. to the west, while the smaller Bern Airport is equidistant to the north. The Swiss Air Force uses Sion as one of their four jetfighter air bases, the others being Payerne, Meiringen and Emmen. It is known as "Flugplatzkommando 14 Sion". In addition to the prop-types Pilatus
Sion, Switzerland recreational space in the municipality increased by and is now about 4.47% of the total area. Of the agricultural land, is used for orchards and vineyards, is fields and grasslands and consists of alpine grazing areas. Since 1980 the amount of agricultural land has decreased by . Over the same time period the amount of forested land has increased by . Rivers and lakes cover in the municipality. Sion has an average of 82.6 days of rain or snow per year and on average receives of precipitation. The wettest month is December during which time Sion receives an average of