The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 57.5 km south of Kulm.
Other airports nearby include GRZ - Graz (103.0 km east), LJU - Ljubliana Ljubljana (104.8 km south), SZG - Salzburg (110.5 km north west), LNZ - Linz (Horsching) (122.5 km north),