The average train between London Heathrow Airport (LHR) and MI5 takes 41 min and the fastest train takes 33 min. The train runs at least 3 times per hour from London Heathrow Airport (LHR) to MI5. 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 London Heathrow Airport (LHR) and MI5. The earliest departure is at 8:47 AM in the morning, and the last departure from London Heathrow Airport (LHR) is at 9:47 PM which arrives into MI5 at 10:23 PM. All services require a transfer at London Paddington and take an average of 41 min. The schedules shown below are for the next available departures.

35 min • 1 change

35 min • 1 change

35 min • 1 change

50 min • 1 change
Want to know about travelling from London Heathrow Airport (LHR) to MI5? 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 London Heathrow Airport (LHR) to MI5. However, there are services departing from London Heathrow Airport (LHR) station and arriving at MI5 station via London Paddington. The journey, including transfers, takes approximately 41 min.
London Heathrow Airport (LHR) to MI5 train services, operated by Heathrow Express, depart from Heathrow Terminals 2 & 3 station.
London Heathrow Airport (LHR) to MI5 train services, operated by Heathrow Express, arrive at St. James's Park station.
The distance between London Heathrow Airport (LHR) and MI5 is 22.9 km. The road distance is 32 km.
There is no direct connection from London Heathrow Airport (LHR) to MI5. However, you can take the train to London Paddington, walk to Paddington station, take the subway to St. James's Park station, then walk to MI5.