The average bus between Heathrow Terminal 4 and Southampton takes 1h 56m and the fastest bus takes 1h 41m. There is a bus service every few hours from Heathrow Terminal 4 to Southampton. 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 Terminal 4 and Southampton. The earliest departure is at 1:06 AM at night, and the last departure from Heathrow Terminal 4 is at 11:49 PM which arrives into Southampton at 1:30 AM. All services require a transfer, and take on average 1h 56m. The schedules shown below are for the next available departures.

1h 54m • 1 change

2h 2m • 1 change

1h 52m • 1 change

1h 55m • 1 change

1h 54m • 1 change

2h 2m • 1 change

1h 52m • 1 change

1h 55m • 1 change

1h 54m • 1 change

2h 2m • 1 change

1h 52m • 1 change

1h 55m • 1 change

1h 51m • 1 change

2h 2m • 1 change

1h 52m • 1 change

1h 59m • 1 change
Want to know about travelling from Heathrow Terminal 4 to Southampton? 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 Southampton. However, there are services departing from Heathrow Terminal 4 station and arriving at Southampton station via Coach Station station. The journey, including transfers, takes approximately 1h 56m.
Heathrow Terminal 4 to Southampton bus services, operated by Diamond Bus Ltd, depart from Heathrow Terminal 5 station.
Heathrow Terminal 4 to Southampton bus services, operated by Diamond Bus Ltd, arrive at Coach Station.
The distance between Heathrow Terminal 4 and Southampton is 90.9 km. The road distance is 110 km.
National Express operates a bus from Heathrow Terminal 5 to Coach Station hourly. Tickets cost £12–29 and the journey takes 1h 35m.