The nearest airport is BAG - Baguio, located 164.1 km west of Koso.
Other airports nearby include MNL - Manila Ninoy Aquino Intl (227.7 km south west),
Nearby towns ::
Dimankin (1.0km north west) //
Busokbusok (1.6km south west) //
Lual (2.6km north west) //
Pasaruboy (3.2km south west) //
Casiguran (4.0km north west) //
Calangcuasan (4.8km north west) //
Calantas (5.1km north west) //
Llaya (5.7km north) //
Dakiod (5.7km west) //
Tinib (5.8km north west) //
Esperanza (7.6km north) //
Dipalali (7.7km south west) //
Parang (8.0km north east) //
Tabas (8.3km north west) //
Marikit (9.0km north west) //
Dinipan (9.6km south west) //
[all distances 'as the bird flies' and approximate]