Grenoble Alpes Isère Airport (IATA: GNB; ICAO: LFLS) is an operational airport in European France. Located at Saint-Étienne-de-Saint-Geoirs, the airport combines commercial passenger services with business and leisure aviation. It is a separate site from Grenoble–Le Versoud aerodrome. The UAF profile lists a main runway of 3,050 metres.