The average bus between Cardiff and Harrow takes 5h 34m and the fastest bus takes 3h 55m. The bus service runs several times per day from Cardiff to Harrow. 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 3 times a day between Cardiff and Harrow. The earliest departure is at 1:40 AM at night, and the last departure from Cardiff is at 11:40 PM which arrives into Harrow at 4:13 AM. All services require a transfer, and take on average 5h 34m. The schedules shown below are for the next available departures.

3h 55m • 1 change
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8h 5m • 1 change
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4h 33m • 1 change

4h 5m • 1 change
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8h 15m • 1 change
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4h 33m • 1 change

4h 5m • 1 change
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8h 15m • 1 change
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4h 33m • 1 change

4h 5m • 1 change
Arrives next day

8h 15m • 1 change
Arrives next day

4h 33m • 1 change

4h 5m • 1 change
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8h 15m • 1 change
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4h 33m • 1 change
Want to know about travelling from Cardiff to Harrow? 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 Harrow. However, there are services departing from Cardiff station and arriving at Harrow station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 5h 34m.
Cardiff to Harrow bus services, operated by National Express, depart from Sophia Gardens station.
Cardiff to Harrow bus services, operated by National Express, arrive at St Georges Centre station.
The distance between Cardiff and Harrow is 196.9 km. The road distance is 241 km.
You can take a bus from Sophia Gardens to St Georges Centre via Heathrow Central Bus Station in around 4h 1m.