The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 56.2 km south west of Kienberg.
Other airports nearby include GRZ - Graz (61.2 km east), LJU - Ljubliana Ljubljana (98.5 km south), MBX - Maribor (104.9 km south east), LNZ - Linz (Horsching) (130.7 km north),