The nearest airport is SGD - Soenderborg Sonderborg, located 48.4 km north east of Sillerup.
Other airports nearby include SKS - Skrydstrup (60.4 km north), GWT - Westerland Sylt (61.9 km north west), KEL - Kiel Holtenau (69.0 km south east), EBJ - Esbjerg (102.9 km north west),