The nearest airport is CGN - Cologne Koln Bonn, located 28.0 km south of Altenbach.
Other airports nearby include DUS - Duesseldorf Dusseldorf (31.1 km north west), ESS - Essen Mulheim (34.2 km north), MGL - Moenchengladbach Monchengladbach (44.6 km west), DTM - Dortmund (56.5 km north east),