S4: headway, hours of service, vehicles
Every 60 minutes in the daytime, every 60 in the evening, last departure 22:51 (Mon–Fri). 15 stops in 2 parts: Langenzersdorf – Praterstern and Hauptbahnhof – Perchtoldsdorf.
In short: Every 60 minutes in the daytime, every 60 in the evening, last departure 22:51 (Mon–Fri). 15 stops in 2 parts: Langenzersdorf – Praterstern and Hauptbahnhof – Perchtoldsdorf.
Headway and hours of service
S4 does not run through the night. Last departure on weekdays around 22:51, first around 6:09; the night buses cover the hours in between.
The S-Bahn trunk line between Hauptbahnhof/St. Marx and Praterstern is closed from 7 September 2026 to the end of October 2027 (ÖBB S-Bahn Wien upgrade). Until then the S4 runs in 2 parts: Langenzersdorf – Praterstern and Hauptbahnhof – Perchtoldsdorf; the U1, U2 and U4 run more often in between.
Vehicles
75 m, 160 km/h, 487 places, 24 bike spaces, low-floor entry
67 m, 140 km/h, 451 places, 15 bike spaces, low-floor entry
S-Bahn trains are not assigned to lines permanently: the Cityjet and the Talent are both air-conditioned (the 4020 series was retired in July 2026); which one comes is not in any open data source.
15 stops
Langenzersdorf – Praterstern
Hauptbahnhof – Perchtoldsdorf
Ride along on the S4, live on the map →Frequently asked
How often does the S4 run?
daytime every 60 min · evenings every 60 · 6:09–22:51 on weekdays, daytime every 60 min · evenings every 60 · 7:39–22:51 on Saturdays, daytime every 60 min · evenings every 60 · 7:39–22:51 on Sundays. Headway is the median gap between departures per direction at the busiest stop, from the ÖBB timetable as of 31 October 2026.
When is the last S4?
On weekdays around 22:51, on Saturdays 22:51, on Sundays 22:51. First departure on weekdays around 6:09.
Is the S4 air-conditioned?
S-Bahn trains are not assigned to lines permanently: the Cityjet and the Talent are both air-conditioned (the 4020 series was retired in July 2026); which one comes is not in any open data source.
Does the S4 run at night?
S4 does not run through the night. Last departure on weekdays around 22:51, first around 6:09; the night buses cover the hours in between.
Why does the S4 not run across the trunk line?
The S-Bahn trunk line between Hauptbahnhof/St. Marx and Praterstern is closed from 7 September 2026 to the end of October 2027 (ÖBB S-Bahn Wien upgrade). Until then the S4 runs in 2 parts: Langenzersdorf – Praterstern and Hauptbahnhof – Perchtoldsdorf; the U1, U2 and U4 run more often in between.
Source: Wiener Linien, GTFS timetable data (data.gv.at, CC BY 4.0); S-Bahn: ÖBB-Personenverkehr AG, GTFS timetable and passenger vehicle data (data.oebb.at, CC BY 4.0); headway = median gap between departures per direction, daytime 6–20 h, evenings 20–24 h, nights 1–4 h. Fleet and air conditioning: Wiener Linien, Klimaanlagen, and ÖBB vehicle data. Positions on the map are computed from the timetable, not measured.
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