The nearest airport is DTM - Dortmund, located 10.1 km south east of Horstmar.
Other airports nearby include ZCA - Arnsberg Menden (27.5 km south east), ESS - Essen Mulheim (47.9 km south west), FMO - Muenster/osnabrueck Munster Osnabruck (60.2 km north), GUT - Guetersloh Gutersloh (63.4 km north east),