The nearest airport is GWT - Westerland Sylt, located 71.9 km north of Siekbüll.
Other airports nearby include KEL - Kiel Holtenau (89.9 km east), BRV - Bremerhaven (91.0 km south), SGD - Soenderborg Sonderborg (97.9 km north east), WVN - Wilhelmshaven Mariensiel (101.8 km south west),