The nearest airport is CGN - Cologne Koln Bonn, located 23.3 km north west of Harmonie.
Other airports nearby include ZNV - Koblenz Winningen (49.5 km south), DUS - Duesseldorf Dusseldorf (74.6 km north west), ESS - Essen Mulheim (78.8 km north west), MGL - Moenchengladbach Monchengladbach (83.1 km north west),