Trondheim Airport (Norwegian: Trondheim lufthavn; IATA: TRD, ICAO: ENVA), more commonly known as Værnes, is an international airport serving Trondheim and the surrounding areas in Trøndelag county, Norway. The airport is located in Værnes, a village in Stjørdal Municipality which is located 10 nautical miles (19 km; 12 mi) east of Trondheim Municipality. Operated by the state-owned Avinor, it shares facilities with Værnes Air Station of the Royal Norwegian Air Force. In 2018, the airport had 4,441,870 passengers and 58,273 air movements, making it the fourth-busiest in the country. The airport has two terminals; A dates from 1994 and is used for domestic traffic, while B is the renovated former main terminal from 1982, and is used for international traffic. The airport features a main east–west 2,999-metre (9,839 ft) runway, a disused northwest–southeast 1,472-metre (4,829 ft) runway, an integrated railway station and an airport hotel.

The main airlines at the airport are Scandinavian Airlines (SAS), Norwegian Air Shuttle and Widerøe, for all of which Værnes is a focus city. The main route is the service to Oslo, operated by Norwegian, SAS, and Widerøe, which is the fourth-busiest route in Europe and there are also some additional domestic services operated by Airbus A320, Boeing 737, Dash 8 and Embraer E2. In addition to Norwegian, SAS and Wizz Air, the airlines airBaltic, Finnair and KLM operate international routes out of Trondheim. Widerøe operates also with Dash 8 aircraft to six airports in Helgeland and Nord-Trøndelag on PSO-routes on behalf of the Norwegian state.