The nearest airport is CRL - Charleroi Brussels South, located 32.8 km east of Casteau.
Other airports nearby include BRU - Brussels Natl (Melsbroek) (54.8 km north east), LIL - Lille Lesquin (64.7 km west), QKT - Kortrijk-vevelgem Wevelgem (65.4 km north west), ANR - Antwerp Deurne (81.6 km north east),