The nearest airport is GRZ - Graz, located 38.8 km south west of Illensdorf.
Other airports nearby include MBX - Maribor (79.4 km south), VIE - Vienna Schwechat (115.8 km north east), KLU - Klagenfurt (Worthersee Intl) (131.1 km south west), BTS - Bratislava M R Stefanik (149.2 km north east),