The nearest airport is ACH - St Gallen Altenrhein, located 12.6 km north west of Diepoldsau.
Other airports nearby include FDH - Friedrichshafen (33.3 km north), ZRH - Zurich (82.3 km west), SMV - Samedan (96.3 km south), ZQL - Donaueschingen Villingen (106.1 km north west),