The average bus between Heathrow and Portishead takes 3h 18m and the fastest bus takes 2h 48m. There is a bus service every few hours from Heathrow to Portishead. 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 Portishead. The earliest departure is at 12:50 AM at night, and the last departure from Heathrow is at 10:00 PM which arrives into Portishead at 12:48 AM. All services require a transfer, and take on average 3h 18m. The schedules shown below are for the next available departures.

3h 11m • 1 change

3h 15m • 1 change

3h 5m • 1 change

3h 2m • 1 change

6h 10m • 1 change

3h 9m • 1 change

3h 2m • 1 change

3h 12m • 1 change

6h 10m • 1 change

3h 9m • 1 change

3h 2m • 1 change

3h 12m • 1 change

6h 10m • 1 change

3h 9m • 1 change

3h 2m • 1 change

3h 12m • 1 change
Want to know about travelling from Heathrow to Portishead? 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 Portishead. However, there are services departing from Heathrow station and arriving at Portishead station via Bristol Bus Station station. The journey, including transfers, takes approximately 3h 18m.
Heathrow to Portishead bus services, operated by FlixBus, depart from London Heathrow Airport station.
Heathrow to Portishead bus services, operated by FlixBus, arrive at Combe Road station.
The distance between Heathrow and Portishead is 160.5 km. The road distance is 185 km.
You can take a bus from London Heathrow Airport to Combe Road via Bus Station in around 3h.