The nearest airport is PDV - Plovdiv, located 53.1 km north of Kupen.
Other airports nearby include KVA - Kavala Megas Alexandros Intl (82.1 km south), AXD - Alexandroupolis Dimokritos (116.1 km south east), SOF - Sofia (178.3 km north west), GOZ - Gorna Orechovica Gorna Oryahovitsa (182.5 km north),