The average bus between Cardiff and Blackwater takes 6h 10m and the fastest bus takes 4h 40m. The bus service runs several times per day from Cardiff to Blackwater. 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 every 3 hours between Cardiff and Blackwater. The earliest departure is at 1:40 AM at night, and the last departure from Cardiff is at 4:30 PM which arrives into Blackwater at 6:32 AM. All services require a transfer at Heathrow Terminal 5 and take an average of 6h 10m. The schedules shown below are for the next available departures.



4h 40m • 3 changes



6h 42m • 3 changes



5h 42m • 3 changes



6h 21m • 3 changes



5h 32m • 3 changes



5h 5m • 3 changes



5h 44m • 3 changes



5h 14m • 3 changes



5h 34m • 3 changes



5h 39m • 3 changes



5h 29m • 3 changes



4h 59m • 3 changes



5h 38m • 3 changes



5h 8m • 3 changes



6h 18m • 3 changes



5h 53m • 3 changes



5h 32m • 3 changes



5h 5m • 3 changes



5h 44m • 3 changes



5h 14m • 3 changes



5h 32m • 3 changes



5h 5m • 3 changes



5h 44m • 3 changes



5h 14m • 3 changes
Want to know about travelling from Cardiff to Blackwater? 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 Blackwater. However, there are services departing from Cardiff station and arriving at Blackwater station via Heathrow Terminal 5. The journey, including transfers, takes approximately 6h 10m.
Cardiff to Blackwater bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Blackwater bus services, operated by National Express, arrive at Heathrow Terminal 5 station.
The distance between Cardiff and Blackwater is 167.4 km. The road distance is 258 km.
National Express operates a bus from Sophia Gardens to Heathrow Terminal 5 hourly. Tickets cost £27–65 and the journey takes 3h 15m.