The nearest airport is VIE - Vienna Schwechat, located 56.7 km north east of Klaus.
Other airports nearby include GRZ - Graz (98.3 km south west), BTS - Bratislava M R Stefanik (101.7 km north east), LNZ - Linz (Horsching) (141.2 km west), MBX - Maribor (148.3 km south),