🚌 Bus from Watford to Harpenden
1 direct route · about 79 min · first bus 06:02, last bus 22:57 (weekdays).
💷 Single fares on this journey are capped at £3 on participating routes
(England cap, until 31 Dec 2026 — then £2). Details →
Direct routes
| Route | Operator | Journey time | Weekday journeys | First | Last | Board at |
|---|---|---|---|---|---|---|
| 321 | Arriva Beds and Bucks | ~79 min | 121 | 06:02 | 22:57 | Watford Hospital Car Park (opp) |
Times are for the first boarding point in Watford on each route's weekday timetable — open the route for the full timetable, live map and every stop.
Frequently asked questions
Which bus goes from Watford to Harpenden?
The 321 (Arriva Beds and Bucks) runs directly from Watford to Harpenden.
How long does the bus take from Watford to Harpenden?
Around 79 minutes on the 321, depending on time of day and traffic.
What time is the first and last bus from Watford to Harpenden?
On weekdays the first direct bus (the 321) leaves around 06:02 and the last around 22:57. Check the route timetable for weekends.
How much is the bus from Watford to Harpenden?
Most single fares in England are capped at £3 until 31 December 2026, then £2 from 1 January 2027.