The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 8.0 km south west of Treffelsdorf.
Other airports nearby include LJU - Ljubliana Ljubljana (53.1 km south), GRZ - Graz (85.6 km north east), MBX - Maribor (101.6 km east), TRS - Ronchi De Legionari Ronchi Dei Legionari (120.5 km south west),