Onojo

Known weekday departures: 179/day · Known Sat & holiday departures: 179/day

First / last known departure (weekday): 5:26 / 23:00

Busiest hour (known departures): 17:00–18:00 (14)

0:00 ─ 23:00

Figures are the departures known from the timetable data, not a count of today's actual service.

Timetable data as of 2 May 2026 (retrieved in spring/summer 2026).

• Kagoshima Main Line: Kasuga (Fukuoka) ⇄ Mizuki

Ōnojō Station traces its history to 10 June 1946 when the Ministry of Transport opened the Kasuga Signal Station to handle Allied-Occupation freight traffic. The signal stop was promoted to a full station on 1 October 1961 as Shirakibaru Station, handling carload freight over the branch line dedicated to the stationed US forces. That freight traffic ended on 5 March 1974 and the site became a contract-staffed station. JR Kyushu took over at privatisation on 1 April 1987, and a local renaming campaign led to the change to Ōnojō Station on 11 March 1989 — distinguishing it from the nearby Nishitetsu Shirakibaru Station. The current overhead station building opened on 20 August 1990, and rapid services began stopping in March 2003.

The station has borne three names in turn, each with a local origin: "Kasuga", after the nearby Kasuga Shrine; "Shirakibaru", a place name traced to a settlement of people who came from Silla in ancient Korea; and "Ōnojō", from the ancient mountain fortress of the same name.