The average bus between Southampton Airport (SOU) and Heathrow Terminal 4 takes 2h 6m and the fastest bus takes 1h 51m. The bus service runs several times per day from Southampton Airport (SOU) to Heathrow Terminal 4. 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 2 hours between Southampton Airport (SOU) and Heathrow Terminal 4. The earliest departure is at 12:41 AM at night, and the last departure from Southampton Airport (SOU) is at 6:51 PM which arrives into Heathrow Terminal 4 at 8:46 PM. All services require a transfer at Library and take an average of 2h 6m. The schedules shown below are for the next available departures.


3h 16m • 2 changes


1h 56m • 2 changes


2h 6m • 2 changes


2h 5m • 2 changes


3h 16m • 2 changes


2h 26m • 2 changes


2h 5m • 2 changes


2h 16m • 2 changes


3h 16m • 2 changes


2h 6m • 2 changes


2h 6m • 2 changes


2h 5m • 2 changes


3h 16m • 2 changes


2h 10m • 2 changes


2h 6m • 2 changes


1h 54m • 2 changes


3h 16m • 2 changes


2h 10m • 2 changes


2h 6m • 2 changes


1h 54m • 2 changes
Want to know about travelling from Southampton Airport (SOU) to Heathrow Terminal 4? 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 Southampton Airport (SOU) to Heathrow Terminal 4. However, there are services departing from Southampton Airport (SOU) station and arriving at Heathrow Terminal 4 station via Heathrow Terminal 5. The journey, including transfers, takes approximately 2h 6m.
Southampton Airport (SOU) to Heathrow Terminal 4 bus services, operated by Unilink, depart from Library station.
Southampton Airport (SOU) to Heathrow Terminal 4 bus services, operated by Unilink, arrive at Heathrow Terminal 5 station.
The distance between Southampton Airport (SOU) and Heathrow Terminal 4 is 85.2 km. The road distance is 106 km.
National Express operates a bus from Library to Heathrow Terminal 5 hourly. Tickets cost £11–28 and the journey takes 1h 15m. FlixBus also services this route 5 times a day.