The average bus between Heathrow Terminal 4 and Portsmouth takes 1h 56m and the fastest bus takes 1h 41m. The bus service runs several times per day from Heathrow Terminal 4 to Portsmouth. 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 4 hours between Heathrow Terminal 4 and Portsmouth. The earliest departure is at 12:31 AM at night, and the last departure from Heathrow Terminal 4 is at 10:40 PM which arrives into Portsmouth at 12:30 AM. All services require a transfer, and take on average 1h 56m. The schedules shown below are for the next available departures.

1h 41m • 1 change

2h 2m • 1 change

1h 59m • 1 change

2h 16m • 1 change

1h 42m • 1 change

1h 52m • 1 change

1h 59m • 1 change

1h 57m • 1 change

1h 44m • 1 change

1h 52m • 1 change

2h 7m • 1 change

1h 57m • 1 change

1h 41m • 1 change

2h 2m • 1 change

1h 59m • 1 change

1h 57m • 1 change

1h 41m • 1 change

2h 2m • 1 change

1h 52m • 1 change

2h 17m • 1 change

1h 41m • 1 change

2h 2m • 1 change

1h 52m • 1 change

2h 17m • 1 change
Want to know about travelling from Heathrow Terminal 4 to Portsmouth? 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 Terminal 4 to Portsmouth. However, there are services departing from Heathrow Terminal 4 station and arriving at Portsmouth station via St Georges Square. The journey, including transfers, takes approximately 1h 56m.
Heathrow Terminal 4 to Portsmouth bus services, operated by Abellio London, depart from Heathrow Terminal 5 station.
Heathrow Terminal 4 to Portsmouth bus services, operated by Abellio London, arrive at St Georges Square station.
The distance between Heathrow Terminal 4 and Portsmouth is 86 km. The road distance is 109 km.
National Express operates a bus from Heathrow Terminal 5 to St Georges Square hourly. Tickets cost £12–29 and the journey takes 1h 35m.