The nearest airport is GRZ - Graz, located 50.9 km south of Diemlach.
Other airports nearby include MBX - Maribor (110.7 km south), KLU - Klagenfurt (Worthersee Intl) (112.8 km south west), LNZ - Linz (Horsching) (120.2 km north west), VIE - Vienna Schwechat (123.3 km north east),