Oslo Airport (Norwegian: Oslo Lufthavn; IATA: OSL, ICAO: ENGM) is the principal airport serving Oslo, the capital of and most populous city in Norway. Oslo is also served by the low-cost Torp and Rygge airports. Oslo Airport acts as the main domestic hub and international airport for Norway, and is the second-busiest airport in the Nordic countries. Being a hub for Scandinavian Airlines, an operating base for Norwegian Air Shuttle, and a focus city for Widerøe, it connects to 28 domestic and about 115 international destinations.