The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 28.6 km south east of Kalsberg.
Other airports nearby include LJU - Ljubliana Ljubljana (73.6 km south east), GRZ - Graz (104.4 km east), TRS - Ronchi De Legionari Ronchi Dei Legionari (121.6 km south west), MBX - Maribor (128.5 km east),