The nearest airport is STR - Stuttgart, located 55.5 km north west of Altental.
Other airports nearby include AGB - Augsburg (81.4 km east), FDH - Friedrichshafen (84.5 km south), ACH - St Gallen Altenrhein (103.8 km south), ZQL - Donaueschingen Villingen (108.4 km south west),