The nearest airport is MBX - Maribor, located 37.3 km south east of Kleinradl.
Other airports nearby include GRZ - Graz (40.1 km north), KLU - Klagenfurt (Worthersee Intl) (71.1 km west), LJU - Ljubliana Ljubljana (78.2 km south west), ZAG - Zagreb (118.3 km south east),