The average bus between Cardiff and London Paddington takes 5h 14m and the fastest bus takes 3h 53m. The bus service runs several times per day from Cardiff to London Paddington. 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 4 times a day between Cardiff and London Paddington. The earliest departure is at 12:38 PM in the afternoon, and the last departure from Cardiff is at 7:53 PM which arrives into London Paddington at 12:16 AM. All services require a transfer at London Heathrow Airport Terminal 5 and take an average of 5h 14m. The schedules shown below are for the next available departures.

6h 26m • 1 change
5h 7m • 1 change
4h 36m • 1 change
4h 23m • 1 changeWant to know about travelling from Cardiff to London Paddington? 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 Cardiff to London Paddington. However, there are services departing from Cardiff - North Road station and arriving at London Heathrow Airport Terminal 5 station via London Heathrow Airport Terminal 5 station. The journey, including transfers, takes approximately 5h 14m.
Cardiff to London Paddington bus services, operated by FlixBus, depart from Cardiff - North Road station.
Cardiff to London Paddington bus services, operated by FlixBus, arrive at London Heathrow Airport Terminal 5 station.
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The distance between Cardiff and London Paddington is 207.9 km. The road distance is 238 km.
FlixBus operates a bus from Cardiff - North Road to London Heathrow Airport Terminal 5 hourly. Tickets cost £17–27 and the journey takes 3h 55m.