Line · Zürich
S21 Zürich HB – Regensdorf-Watt
S21 in Zürich, from Zürich HB to Regensdorf-Watt, 5 stops. Monday to Friday from 06:31 to 18:40, about every 30 min. Run by Schweizerische Bundesbahnen AG.
When it runs
| Day | Trips | First | Last | Every |
|---|---|---|---|---|
| Monday–Friday | 16 | 06:31 | 18:40 | 30 min |
| Saturday | No service | |||
| Sunday | No service | |||
Read off the timetable for 5 November 2026: an ordinary day of each kind in the next four weeks. The first and last trips leave the line’s first stop; the interval is the usual one between 06:00 and 20:00 in the main direction. On public holidays most lines run to the Sunday timetable. For any one day, the live board has that day’s departures.
Stops towards Regensdorf-Watt
The number after a stop is the minutes from Zürich HB.
Towards Zürich HB: the same stops in reverse order.
Where it meets the long-distance trains
Stations on the line with InterCity or InterRegio trains:
Every figure on this page is read from the official Swiss timetable published on opentransportdata.swiss. Tickets are sold by the transport operators. Without guarantee: no liability for errors or missed connections.