Musashi-Sakai

Weekday departures: 759/day in the available timetable data · Sat & holiday departures: 353/day in the available timetable data

Earliest / latest departure in the available data (weekday): 4:47 / 24:42 (00:42 next day)

Busiest hour in the available data: 9:00–10:00 (56)

0:00 ─ 23:00

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

Timetable data as of 4 May 2026.

The timetable data is incomplete for some or all lines at this station, so the weekday and Sat & holiday figures are departures in the available timetable data, not totals.

Lines where the timetable data is incomplete:

• Seibu Tamagawa Line: no timetable data
• Chuo Main Line: timetable covers only part of the line

• Chuo Main Line: Mitaka ⇄ Higashi-Koganei

Musashi-Sakai Station opened on 11 April 1889 as Sakai Station on what is now the Chūō Main Line in the city of Musashino, western Tokyo, and was renamed to its present name on 1 July 1919. The Seibu Tamagawa Line, which has its northern terminus at Musashi-Sakai, began operating on 22 October 1917. The current station building was completed in 2008. Today the JR station is operated by East Japan Railway Company and is served only by the slowest Chūō Rapid Line services, while the adjacent Seibu Tamagawa Line platform is operated by Seibu Railway as a single elevated dead-headed island platform with two tracks.

Musashi-Sakai is the nearest railway station to the main campus of International Christian University and to the headquarters of the National Astronomical Observatory of Japan.