The nearest airport is KEL - Kiel Holtenau, located 38.4 km south east of Grumby.
Other airports nearby include SGD - Soenderborg Sonderborg (43.2 km north), SKS - Skrydstrup (76.0 km north), GWT - Westerland Sylt (93.0 km north west), HAM - Hamburg (108.1 km south),