Ookusa

Known weekday departures: 33/day · Known Sat & holiday departures: 33/day

First / last known departure (weekday): 6:14 / 23:10

Busiest hour (known departures): 6:00–7:00 (4)

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).

• Nagasaki Main Line: Higashisono ⇄ Honkawachi

Ōkusa opened on 27 November 1898 as an intermediate station on the privately built Kyushu Railway, the day a new track was completed between Nagayo and Ōmura to link Tosu with Urakami. The Kyushu Railway was nationalised on 1 July 1907, and on 12 October 1909 the route through Ōkusa was designated as the Nagasaki Main Line. After the inland Ichinuno bypass opened on 2 October 1972, the coastal section became known as the old line, or Nagayo branch. Goods handling ended in 1962, the station's operations were contracted out in 1974, and staff were withdrawn in January 1983. JR Kyushu took over on 1 April 1987, rebuilt the building in light-green livery in 1989, and added SUGOCA in December 2012.

Although the station is in former Ōkusa village, the main settlement lies on the other side of a ridge and is closer to neighbouring Higashisono Station; Ōkusa Station in practice serves the former Ikiriki village and once had ferry connections to Nagasaki Airport.