Next train departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Train | Watford Junction | Clapham Junction | Cheapest | ||||
| Train | Watford Junction | Clapham Junction | Fastest | ||||
 | Train | Watford High Street | Clapham Junction | No tags | ||||
| Train | Watford Junction | Clapham Junction | No tags | ||||
| Train | Watford High Street | Clapham Junction | No tags |
Last refresh of the prices: Yesterday at 10:08 GMT.
Compare 3 ways to travel from Watford to London
Among the sustainable travel choices, the bus stands out as a good way to reach London. The journey takes about 45 minutes and with fares starting at just £14, it presents an excellent value for a comfortable ride.
Train Companies
Frequently asked questions about travelling from Watford to London by train
Please note that timetables, routes, or operator details shown here may be updated or vary at the time of your journey.
How much does a train ticket cost from Watford to London?
The cheapest train tickets from Watford to London start from £9. The average price for this train route is around £12. Busbud recommends booking your tickets in advance for the best chance of getting the lowest possible price.
How long is the train journey from Watford to London?
The average train journey time from Watford to London is 51m, covering a distance of 13 miles. The fastest train gets you there in 15m and is operated by West Midlands Railway.
Which train operators serve the Watford to London route?
Several major train operators run on this route with 27 trains available per day, including services from London Overground, West Midlands Railway, Southern, Avanti West Coast.
What are the earliest and latest departure times for the train from Watford to London?
The earliest train from Watford to London departs at 07:00. And the latest train departs at 23:33.
Which is the best train operator from Watford to London?
According to Busbud customers, the highest-rated train operator on this route is Southern, with an average rating of 4.2 out of 5 stars based on 34 reviews.
Which train operator has the best Wi-Fi from Watford to London?
According to reviews on Busbud, the train operator Southern has the highest Wi-Fi rating with a score of 5.0.
Which train operator has the most punctual service from Watford to London?
According to Busbud traveller reviews, the most punctual train operator on this route is Southern, with a punctuality rating of 5.0 out of 5 stars.
Which train operator has the cleanest trains from Watford to London?
According to Busbud traveller reviews, the train operator with the cleanest trains on this route is Southern, with a cleanliness rating of 5.0 out of 5 stars.
Find cheapest prices for trains
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Watford to London was searched and found on 3 Dec 2025 with a price of £8To save money and be sure you have the best seat, it's a good idea to buy your train tickets from Watford to London as early as possible.
You can expect to pay from £8 to £36 for a train ticket from Watford to London based on the last 2 days. You can expect to find the cheapest price for the trip at £8, which is on 2025-12-03.
Usually Southern will charge you higher prices for tickets closer to the departure date. To find the best prices, you should be flexible on your date of travel.
