The average bus between Slough and Heathrow Terminal 4 takes 49 min and the fastest bus takes 38 min. The bus runs at least 3 times per hour from Slough 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 20 minutes between Slough and Heathrow Terminal 4. The earliest departure is at 12:00 AM at night, and the last departure from Slough is at 11:31 PM which arrives into Heathrow Terminal 4 at 12:25 AM. All services require a transfer, and take on average 49 min. The schedules shown below are for the next available departures.

52 min • 1 change

46 min • 1 change

1h • 1 change

47 min • 1 change
Want to know about travelling from Slough 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 Slough to Heathrow Terminal 4. However, there are services departing from Slough station and arriving at Heathrow Terminal 4 station via Heathrow Terminal 5. The journey, including transfers, takes approximately 49 min.
Slough to Heathrow Terminal 4 bus services, operated by Thames Valley Buses, depart from Wellington Street Stop A station.
Slough to Heathrow Terminal 4 bus services, operated by Thames Valley Buses, arrive at Heathrow Terminal 4 station.
The distance between Slough and Heathrow Terminal 4 is 11.8 km. The road distance is 18 km.
You can take a bus from Wellington Street Stop A to Heathrow Terminal 4 via Heathrow Terminal 5 in around 39 min.