The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 28.0 km south of Althofen.
Other airports nearby include LJU - Ljubliana Ljubljana (72.8 km south), GRZ - Graz (75.1 km east), MBX - Maribor (103.3 km south east), TRS - Ronchi De Legionari Ronchi Dei Legionari (139.7 km south west),