It was established on 1 July 1952[1] to inherit part of the business of the Dohoku Bus.

The SOYA bus operates around the northernmost part of Japan.

The bus company belonged to Tokyu Group from 1959 until 2009.

Soya Bus had company members travel to Horikawa Bus which operates around Fukuoka Prefecture and Naha Bus/Ryukyu Bus that operates around Okinawa Prefecture during summer because this company is not busy during summer.

They travel to Soya Bus in Hokkaido during winter because snow is rare during winter around Kyushu region.