Onchon Air Base (온천비행장) is an air base near Onchon, Pyongan-namdo, North Korea.

The airfield has a single concrete runway 01/19 measuring 8150 x 170 feet (2484 x 52 m).

It has a full-length parallel taxiway and several aprons and hangars.

It is on the west coast of North Korea and approximately 47 km (29 mi) west of Pyongyang.

[1] Approximately 5 km (3.1 mi) to the southeast of the air base is an underground aviation complex with runways extending outwards from the tunnel systems.