The average train between Heathrow Terminal 3 and Milton Keynes takes 1h 28m and the fastest train takes 1h 16m. The train runs at least 3 times per hour from Heathrow Terminal 3 to Milton Keynes. 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 20 minutes between Heathrow Terminal 3 and Milton Keynes. The earliest departure is at 6:36 AM in the morning, and the last departure from Heathrow Terminal 3 is at 7:21 PM which arrives into Milton Keynes at 9:01 PM. All services require a transfer at Tottenham Court Road Station and take an average of 1h 28m. The schedules shown below are for the next available departures.


1h 30m • 2 changes


1h 22m • 2 changes


1h 16m • 2 changes


1h 29m • 2 changes
Want to know about travelling from Heathrow Terminal 3 to Milton Keynes? 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 Heathrow Terminal 3 to Milton Keynes. However, there are services departing from Heathrow Terminal 3 station and arriving at Milton Keynes station via Tottenham Court Rd. The journey, including transfers, takes approximately 1h 28m.
Heathrow Terminal 3 to Milton Keynes train services, operated by Elizabeth Line (TfL), depart from Heathrow Terminals 2 & 3 station.
Heathrow Terminal 3 to Milton Keynes train services, operated by Elizabeth Line (TfL), arrive at Milton Keynes Central station.
Book your Heathrow Terminal 3 to Milton Keynes train tickets online with Elizabeth Line (TfL), London Underground (Tube) and 2 other operators.
The distance between Heathrow Terminal 3 and Milton Keynes is 66.6 km. The road distance is 109 km.
You can take a train from Heathrow Terminals 2 & 3 to Milton Keynes Central via Tottenham Court Road Station, Tottenham Court Road station, Euston station, and London Euston in around 1h 13m.