The nearest airport is SGD - Soenderborg Sonderborg, located 16.4 km north east of Holnis.
Other airports nearby include SKS - Skrydstrup (45.4 km north west), KEL - Kiel Holtenau (64.7 km south east), GWT - Westerland Sylt (81.0 km west), ODE - Odense (82.3 km north east),