The nearest airport is FDH - Friedrichshafen, located 23.7 km south east of Illmensee.
Other airports nearby include ACH - St Gallen Altenrhein (44.5 km south), ZQL - Donaueschingen Villingen (65.4 km west), ZRH - Zurich (77.0 km south west), STR - Stuttgart (92.3 km north),