Achinsk Airport (Russian: Аэропорт Ачинск) (IATA: ACS, ICAO: UNKS) is an air base in Krasnoyarsk Krai, Russia located 4 kilometres (2.5 mi) east of Achinsk. It is a civilian airfield with minor facilities for small number of fighter aircraft. One source lists the 712th Guards Fighter Aviation Regiment at Kansk but lists Achinsk as a diversionary airfield.