The average train between Flitwick and Slough takes 1h 48m and the fastest train takes 1h 43m. There is a train service every few hours from Flitwick to Slough. 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 2 hours between Flitwick and Slough. The earliest departure is at 8:27 AM in the morning, and the last departure from Flitwick is at 9:28 PM which arrives into Slough at 11:18 PM. All services require a transfer at Farringdon and take an average of 1h 48m. The schedules shown below are for the next available departures.

1h 50m • 1 change

1h 49m • 1 change

1h 47m • 1 change

1h 49m • 1 change
Want to know about travelling from Flitwick to Slough? 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 Flitwick to Slough. However, there are services departing from Flitwick station and arriving at Slough station via Farringdon. The journey, including transfers, takes approximately 1h 48m.
Flitwick to Slough train services, operated by Thameslink, depart from Flitwick station.
Flitwick to Slough train services, operated by Thameslink, arrive at Slough station.
Book your Flitwick to Slough train tickets online with Thameslink and Elizabeth Line (TfL).
The distance between Flitwick and Slough is 55.5 km. The road distance is 101 km.
You can take a train from Flitwick to Slough via Farringdon and Farringdon Without in around 1h 44m.