The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 10.3 km south east of Hardegg.
Other airports nearby include LJU - Ljubliana Ljubljana (56.9 km south), GRZ - Graz (95.2 km east), MBX - Maribor (112.6 km east), TRS - Ronchi De Legionari Ronchi Dei Legionari (115.9 km south west),