The nearest airport is AGF - Agen La Garenne, located 52.9 km north of Castin.
Other airports nearby include LRH - La Rochelle Lherm (65.2 km south east), TLS - Toulouse Blagnac (67.4 km east), LDE - Tarbes Lourdes (72.6 km south west), PUF - Pau Pyrenees (84.8 km south west),