Cardiff to Watford Buses

Cardiff to Watford buses

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Trip Overview

The average bus between Cardiff and Watford takes 4h 17m and the fastest bus takes 3h 41m. The bus service runs several times per day from Cardiff to Watford. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

4h 17m
Duration: 159 mi
Distance: £29
Average price: Every 2 hours
Frequency

Bus

best

Take the bus from Sophia Gardens to Heathrow Central Bus Stationbus 201 / ...

3h 58m

£25–40

Cardiff to Watford bus times

Buses run every 2 hours between Cardiff and Watford. The earliest departure is at 1:40 AM at night, and the last departure from Cardiff is at 4:40 PM which arrives into Watford at 8:43 PM. All services require a transfer at Heathrow Central Bus Station and take an average of 4h 17m. The schedules shown below are for the next available departures.

Departing Friday, October 30, 2026

4:25 PM → 8:47 PM
4h 22m • 1 change

Departing Saturday, October 31, 2026

1:40 AM → 5:21 AM
3h 41m • 1 change
3:30 AM → 7:30 AM
4h • 1 change
5:35 AM → 9:34 AM
3h 59m • 1 change
7:25 AM → 11:40 AM
4h 15m • 1 change
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Departing Sunday, November 1, 2026

1:40 AM → 5:21 AM
3h 41m • 1 change
3:30 AM → 7:27 AM
3h 57m • 1 change
5:35 AM → 9:34 AM
3h 59m • 1 change
7:25 AM → 11:40 AM
4h 15m • 1 change
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Departing Monday, November 2, 2026

1:40 AM → 5:21 AM
3h 41m • 1 change
3:30 AM → 7:30 AM
4h • 1 change
5:25 AM → 9:34 AM
4h 9m • 1 change
7:15 AM → 11:41 AM
4h 26m • 1 change
Show more

Departing Tuesday, November 3, 2026

1:40 AM → 5:21 AM
3h 41m • 1 change
3:30 AM → 7:30 AM
4h • 1 change
5:25 AM → 9:34 AM
4h 9m • 1 change
7:15 AM → 11:41 AM
4h 26m • 1 change
Show more

Departing Wednesday, November 4, 2026

1:40 AM → 5:21 AM
3h 41m • 1 change
3:30 AM → 7:30 AM
4h • 1 change
5:25 AM → 9:34 AM
4h 9m • 1 change
7:15 AM → 11:41 AM
4h 26m • 1 change
Show more

Departing Thursday, November 5, 2026

1:40 AM → 5:21 AM
3h 41m • 1 change
3:30 AM → 7:30 AM
4h • 1 change
5:25 AM → 9:34 AM
4h 9m • 1 change
7:15 AM → 11:41 AM
4h 26m • 1 change
Show more

Frequently asked questions

Want to know about travelling from Cardiff to Watford? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.