The nearest airport is KLU - Klagenfurt (Worthersee Intl), located 88.5 km east of Gappen.
Other airports nearby include SZG - Salzburg (99.2 km north), AVB - Aviano Ab (Pagliano E Gori) (110.4 km south west), LJU - Ljubliana Ljubljana (120.4 km south east), TRS - Ronchi De Legionari Ronchi Dei Legionari (122.3 km south),