The nearest airport is MMB - Memanbetsu, located 24.0 km west of Koshimizu.
Other airports nearby include SHB - Nakashibetsu (50.6 km south east), MBE - Monbetsu (98.3 km north west), OBO - Obihiro (160.2 km south west),
Nearby towns ::
Kamitoku (4.2km south) //
Izumi (4.5km south east) //
Furutoi (8.0km north) //
Shimo-yambetsu (7.7km north east) //
Mizukami (8.4km south east) //
Yamubetsu (8.6km north east) //
Sattsuru (9.8km south east) //
[all distances 'as the bird flies' and approximate]