Coronavirus Update Close

In line with the latest government guidance, we've put in place further measures in England to help customers practise social distancing. This includes limiting the available seats on buses.  

The safety of our customers and employees is our priority, so please avoid busy times, wear a face covering if you can, use contactless payment and take your litter with you.

For up to date information, see our Coronavirus page


Builth Wells to Cardiff on our T4 Service

Live in South Wales and looking for a fast, comfortable way to reach Builth Wells from Cardiff, Pontypridd, Merthyr Tydfil  or Brecon? Use our Traws Cymru T4 service. The T4 offers free Wi-Fi alongside plenty of other handy benefits.


Journey Information from  Cardiff to Builth Wells

  • Fares: £11.00 (Traws Cymru Day Adult Ticket) £7.30 for a young person*
  • Average journey time: 2hrs 40 mins
  • Changes:  Direct service
  • Buses per day : Monday to Saturday: up to 6 buses per day
  • Bus operators:  Stagecoach
  • Origin:  Cardiff - Tresillian Way
  • Destination:  Builth Wells - The Groe


*showing a valid mytravelpass card

View T4 Timetable


 How can I buy a ticket?

You are able to buy your ticket on the day from your T4 driver - whether that's a single, return, day or even a weekly ticket.
You can now buy day and week tickets on our APP, download today Stagecoach Bus App

Use the bus ticket finder to find all available tickets for your journey, simply enter your from/to destinations and preferred time/date of travel.

Under 22?, You can also benefit from 1/3 off their ticket price with a mytravelpass.

Why travel by T4? 

Free Wi-Fi,  
Dedicated wheelchair space 
Connects Builth Wells with Brecon and South Wales
Pay by contactless for your ticket
We've also introduced next stop audio/visual bilingual announcements!

USB ChargingContactless





How long does it take to travel from Cardiff to Builth Wells?

On average, the journey from Cardiff to Builth Wells takes about 2 hours and 40 minutes. 

Is this a direct service?

Yes, this is a direct service. No changes are required.

What time is the first bus from Cardiff?

The first bus departs at 0629

What time is the last bus to Cardiff?

The last bus departs Builth Wells at 1542.

If you still can't find the answer you need please contact the 

Stagecoach team; for more information - there are plenty of

ways to get in touch.


We also have the following other services that serve the Cardiff area!


Why not catch a little bit of luxury on our 132 Gold service up to every 12 minutes between Maerdy and Cardiff Bay!

Our service 122 runs up to every 15 minutes from Tonypandy via Talbot Green and Danescourt.

We now have our newest Gold service from Caerphilly and Blackwood on Service 26 every 30 minutes!