The nearest airport is KEL - Kiel Holtenau, located 52.8 km east of Kleinsee.
Other airports nearby include SGD - Soenderborg Sonderborg (71.1 km north east), GWT - Westerland Sylt (87.1 km north west), SKS - Skrydstrup (93.9 km north), HAM - Hamburg (94.2 km south east),