The nearest airport is LPP - Lappeenranta, located 15.4 km south east of Kotimäki.
Other airports nearby include QVY - Utti (57.5 km south west), MIK - Mikkeli (73.7 km north west), SVL - Savonlinna (107.6 km north east), VRK - Varkaus (117.5 km north),