The average bus between Heathrow and Cardiff Bus Interchange takes 3h 52m and the fastest bus takes 3h 6m. There is a bus service every few hours from Heathrow to Cardiff Bus Interchange. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Heathrow and Cardiff Bus Interchange. The earliest departure is at 12:30 AM at night, and the last departure from Heathrow is at 7:50 PM which arrives into Cardiff Bus Interchange at 11:02 PM. All services require a transfer, and take on average 3h 52m. The schedules shown below are for the next available departures.

6h 5m • 1 change

4h • 1 change

3h 47m • 1 change

3h 10m • 1 change

6h 5m • 1 change

4h • 1 change

3h 47m • 1 change

3h 10m • 1 change

6h 5m • 1 change

4h • 1 change

3h 47m • 1 change

3h 10m • 1 change

6h 5m • 1 change

4h • 1 change

3h 47m • 1 change

3h 10m • 1 change
Want to know about travelling from Heathrow to Cardiff Bus Interchange? 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.
No, there is no direct bus from Heathrow to Cardiff Bus Interchange. However, there are services departing from Heathrow station and arriving at Cardiff Bus Interchange station via Sophia Gardens. The journey, including transfers, takes approximately 3h 52m.
Heathrow to Cardiff Bus Interchange bus services, operated by National Express, depart from Heathrow Central Bus Station.
Heathrow to Cardiff Bus Interchange bus services, operated by National Express, arrive at Sophia Gardens station.
Book your Heathrow to Cardiff Bus Interchange bus tickets online with National Express, Cardiff Bus and Stagecoach South Wales.
The distance between Heathrow and Cardiff Bus Interchange is 188.8 km. The road distance is 224 km.
National Express operates a bus from Heathrow Central Bus Station to Sophia Gardens hourly. Tickets cost £27–65 and the journey takes 2h 55m.