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Watford Junction to Cardiff buses

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Trip Overview

The average bus between Watford Junction and Cardiff takes 4h 44m 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 44m
Duration
161 mi
Distance
£27
Average price
Hourly
Frequency

Bus

best
  1. Take the bus from Watford Junction station to Heathrow Terminal 2bus bus Ra3
  2. Take the bus from Heathrow Central Bus Station to Sophia Gardensbus bus 201 / ...
4h 4m
£22–38

Watford Junction to Cardiff bus times

Buses run hourly between Watford Junction and Cardiff. The earliest departure is at 5:53 AM in the morning, and the last departure from Watford Junction is at 10:58 PM which arrives into Cardiff at 4:00 AM. All services require a transfer at Heathrow Terminal 2 and take an average of 4h 44m. The schedules shown below are for the next available departures.

Departing Sunday, October 11, 2026

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    Arrives next day

    First Berkshire & The Thames ValleyNational Express5h 2m • 1 change

Departing Monday, October 12, 2026

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    First Berkshire & The Thames ValleyNational Express5h 7m • 1 change

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    Arriva UKNational Express5h 15m • 1 change

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    First Berkshire & The Thames ValleyNational Express4h 40m • 1 change

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    Arriva UKNational Express5h 13m • 1 change
  • Show more

Departing Tuesday, October 13, 2026

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    First Berkshire & The Thames ValleyNational Express5h 7m • 1 change

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    Arriva UKNational Express5h 15m • 1 change

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    First Berkshire & The Thames ValleyNational Express4h 40m • 1 change

  •  → 

    Arriva UKNational Express5h 13m • 1 change
  • Show more

Departing Wednesday, October 14, 2026

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    First Berkshire & The Thames ValleyNational Express5h 7m • 1 change

  •  → 

    Arriva UKNational Express5h 15m • 1 change

  •  → 

    First Berkshire & The Thames ValleyNational Express4h 40m • 1 change

  •  → 

    Arriva UKNational Express5h 13m • 1 change
  • Show more

Departing Thursday, October 15, 2026

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    First Berkshire & The Thames ValleyNational Express5h 7m • 1 change

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    Arriva UKNational Express5h 15m • 1 change

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.

Map of how to get from Watford Junction to Cardiff.ExpandLaunch map view
  • Distance: 160.7 mi
  • Duration: 4h 44m

What companies run services between Watford Junction, England and Cardiff, Wales?

You can take a bus from Watford Junction station to Sophia Gardens via Heathrow Terminal 2 and Heathrow Central Bus Station in around 4h 4m.

Operators