The nearest airport is FDH - Friedrichshafen, located 25.4 km south east of Altheim.
Other airports nearby include ACH - St Gallen Altenrhein (43.6 km south east), ZQL - Donaueschingen Villingen (57.1 km west), ZRH - Zurich (65.6 km south west), STR - Stuttgart (97.1 km north),