The nearest airport is GRZ - Graz, located 30.8 km south of Hart.
Other airports nearby include MBX - Maribor (88.8 km south), KLU - Klagenfurt (Worthersee Intl) (111.4 km south west), VIE - Vienna Schwechat (124.3 km north east), LJU - Ljubliana Ljubljana (139.9 km south west),