Watford Junction to Cardiff Buses

Watford Junction to Cardiff buses

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Trip Overview

The average bus between Watford Junction and Cardiff takes 4h 38m and the fastest bus takes 3h 32m. There is a bus service every few hours from Watford Junction to Cardiff. 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 38m
Duration: 161 mi
Distance: £29
Average price: Hourly
Frequency

Bus

best

Take the bus from Watford Junction station to Heathrow Terminal 2bus Ra3
Take the bus from Heathrow Central Bus Station to Sophia Gardensbus 201 / ...

4h 9m

£24–43

Watford Junction to Cardiff bus times

Buses run hourly between Watford Junction and Cardiff. The earliest departure is at 6:04 AM in the morning, and the last departure from Watford Junction is at 10:58 PM which arrives into Cardiff at 3:35 AM. All services require a transfer at Heathrow Terminal 2 and take an average of 4h 38m. The schedules shown below are for the next available departures.

Departing Monday, October 26, 2026

2:57 PM → 8:00 PM
5h 3m • 1 change
4:25 PM → 8:50 PM
4h 25m • 1 change
5:13 PM → 10:00 PM
4h 47m • 1 change
6:14 PM → 10:40 PM
4h 26m • 1 change
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Departing Tuesday, October 27, 2026

6:05 AM → 11:00 AM
4h 55m • 1 change
6:50 AM → 11:55 AM
5h 5m • 1 change
8:00 AM → 12:40 PM
4h 40m • 1 change
9:04 AM → 1:55 PM
4h 51m • 1 change
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Departing Wednesday, October 28, 2026

6:05 AM → 11:00 AM
4h 55m • 1 change
6:50 AM → 11:55 AM
5h 5m • 1 change
8:00 AM → 12:40 PM
4h 40m • 1 change
9:04 AM → 1:55 PM
4h 51m • 1 change
Show more

Departing Thursday, October 29, 2026

6:05 AM → 11:00 AM
4h 55m • 1 change
6:50 AM → 11:55 AM
5h 5m • 1 change
8:00 AM → 12:40 PM
4h 40m • 1 change
9:04 AM → 1:55 PM
4h 51m • 1 change
Show more

Departing Friday, October 30, 2026

6:05 AM → 11:00 AM
4h 55m • 1 change
6:50 AM → 11:55 AM
5h 5m • 1 change
8:00 AM → 12:40 PM
4h 40m • 1 change
9:04 AM → 2:10 PM
5h 6m • 1 change
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Departing Saturday, October 31, 2026

6:04 AM → 10:50 AM
4h 46m • 1 change
7:22 AM → 11:55 AM
4h 33m • 1 change
8:22 AM → 12:40 PM
4h 18m • 1 change
9:04 AM → 1:55 PM
4h 51m • 1 change
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Departing Sunday, November 1, 2026

6:04 AM → 10:50 AM
4h 46m • 1 change
7:02 AM → 11:55 AM
4h 53m • 1 change
8:02 AM → 12:40 PM
4h 38m • 1 change
9:04 AM → 1:55 PM
4h 51m • 1 change
Show more

Frequently asked questions

Want to know about travelling from Watford Junction to Cardiff? 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.