The nearest airport is MLH - Bale Mulhouse, located 20.3 km west of Karsau.
Other airports nearby include ZRH - Zurich (57.9 km east), CMR - Colmar Houssen (67.2 km north west), ZQL - Donaueschingen Villingen (69.4 km north east), BRN - Bern Belp (77.9 km south),