Kjeller Airport (ICAO: ENKJ) is a military and general aviation airport located in Kjeller, Norway, near Lillestrøm and 9 NM (17 km; 10 mi) east northeast of Oslo. It has facilities for carrying out maintenance for aircraft belonging to the Royal Norwegian Air Force.
Aviation has a long history at Kjeller. Kjeller is Norway's first airport, built in 1912. In the first part of the 20th century there was a small aircraft factory building military planes. There is now a small aircraft museum.
The largest plane to have landed at Kjeller is a Boeing 737 and it is frequently used by C-130 Hercules transports. Vital medicines get flown in to Kjeller for Ullevaal Hospital and Rikshospitalet; in nearby Oslo.
An annual airshow is organized at the airport, where entrance is free-of-charge.