The nearest airport is FDH - Friedrichshafen, located 29.3 km south east of Kirnbach.
Other airports nearby include ACH - St Gallen Altenrhein (48.4 km south east), ZQL - Donaueschingen Villingen (55.7 km west), ZRH - Zurich (69.0 km south west), STR - Stuttgart (91.6 km north),