The average bus between Cardiff and Harwich takes 11h 12m and the fastest bus takes 8h 17m. The bus service runs several times per day from Cardiff to Harwich. 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 Harwich. The earliest departure is at 3:25 AM at night, and the last departure from Cardiff is at 4:40 PM which arrives into Harwich at 8:35 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 11h 12m. The schedules shown below are for the next available departures.




9h 58m • 4 changes



9h 58m • 4 changes



10h 8m • 4 changes



8h 58m • 4 changes



8h 34m • 4 changes



9h 41m • 4 changes



10h 17m • 4 changesArrives next day




16h 5m • 4 changes



8h 34m • 4 changes



9h 41m • 4 changes



10h 17m • 4 changesArrives next day




16h 5m • 4 changes



8h 34m • 4 changes



9h 41m • 4 changes



10h 17m • 4 changesArrives next day




16h 5m • 4 changesWant to know about travelling from Cardiff to Harwich? 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 Harwich. However, there are services departing from Cardiff station and arriving at Harwich station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 11h 12m.
Cardiff to Harwich bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Harwich bus services, operated by National Express, arrive at Railway Station.
Book your Cardiff to Harwich bus tickets online with National Express and First Essex.
The distance between Cardiff and Harwich is 311.8 km. The road distance is 397 km.
You can take a bus from Sophia Gardens to Mayflower Avenue via Heathrow Central Bus Station, Coach Station, Railway Station, High Street, and The George in around 8h 16m.