The nearest airport is ZQL - Donaueschingen Villingen, located 37.5 km south west of Hartheim.
Other airports nearby include STR - Stuttgart (63.3 km north), FDH - Friedrichshafen (67.8 km south east), ZRH - Zurich (81.9 km south), ACH - St Gallen Altenrhein (86.9 km south east),