The nearest airport is GUT - Guetersloh Gutersloh, located 19.8 km south west of Sieker.
Other airports nearby include PAD - Paderborn Lippstadt (43.1 km south), FMO - Muenster/osnabrueck Munster Osnabruck (62.3 km west), ZCA - Arnsberg Menden (73.7 km south west), DTM - Dortmund (84.9 km south west),