The average train between Slough and Heathrow Terminal 3 takes 30 min and the fastest train takes 22 min. The train runs at least 2 times per hour from Slough to Heathrow Terminal 3. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 30 minutes between Slough and Heathrow Terminal 3. The earliest departure is at 4:17 AM at night, and the last departure from Slough is at 11:21 PM which arrives into Heathrow Terminal 3 at 11:52 PM. All services require a transfer, and take on average 30 min. The schedules shown below are for the next available departures.

29 min • 1 change

29 min • 1 change

28 min • 1 change

29 min • 1 change
Want to know about travelling from Slough to Heathrow Terminal 3? 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 train from Slough to Heathrow Terminal 3. However, there are services departing from Slough station and arriving at Heathrow Terminal 3 station via Hayes And Harlington Station station. The journey, including transfers, takes approximately 30 min.
Slough to Heathrow Terminal 3 train services, operated by Elizabeth Line (TfL), depart from Slough station.
Slough to Heathrow Terminal 3 train services, operated by Elizabeth Line (TfL), arrive at Heathrow Terminals 2 & 3 station.
Book your Slough to Heathrow Terminal 3 train tickets online with Elizabeth Line (TfL) and Great Western Railway (GWR).
The distance between Slough and Heathrow Terminal 3 is 10.5 km. The road distance is 18 km.
You can take a train from Slough to Heathrow Terminals 2 & 3 via Hayes And Harlington Station in around 28 min.