The nearest airport is GRZ - Graz, located 19.0 km south east of Hart.
Other airports nearby include MBX - Maribor (78.4 km south), KLU - Klagenfurt (Worthersee Intl) (91.4 km south west), LJU - Ljubliana Ljubljana (119.9 km south west), VIE - Vienna Schwechat (144.6 km north east),