Onogo

Weekday departures: 41/day · Sat & holiday departures: 41/day

First / last departure (weekday): 5:41 / 23:09

Busiest hour: 7:00–8:00 (5)

0:00 ─ 23:00

Figures are typical departures in the timetable data, not a live service count.

Timetable data as of 2 May 2026.

• Dosan Line: Aso (Kochi) ⇄ Oma

Ōnogō began life as a signal box opened on 20 June 1942 along the existing Dosan Line track. The facility was closed on 1 September 1945 but reopened on 10 July 1946, and on 1 June 1947 it was upgraded to a full passenger station under Japanese National Railways. Following the 1987 privatisation of JNR, control passed to JR Shikoku and JR Freight. A private siding to a Sumitomo Osaka Cement factory carried limestone from Tokano Station, but freight operations ended on 1 October 1992. The station became fully unstaffed in September 2010. Some limited-express Nanpū and Ashizuri services have stopped at the station since the 2013 timetable revision.

Since 2014, on the day of the "Local Mascot Festival in Susaki," held every September, three round trips of limited express trains make special stops here, handling passengers as the nearest station.