The average train between Heathrow and Diss takes 2h 50m and the fastest train takes 2h 19m. There is a train service every few hours from Heathrow to Diss. 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 hourly between Heathrow and Diss. The earliest departure is at 6:25 AM in the morning, and the last departure from Heathrow is at 11:36 PM which arrives into Diss at 8:01 AM. All services require a transfer, and take on average 2h 50m. The schedules shown below are for the next available departures.

2h 36m • 1 change

2h 34m • 1 change

2h 34m • 1 change

2h 35m • 1 change

2h 37m • 1 change

2h 34m • 1 change

2h 34m • 1 change

2h 36m • 1 change

2h 37m • 1 change

2h 34m • 1 change

2h 34m • 1 change

2h 36m • 1 change

2h 37m • 1 change

2h 34m • 1 change

2h 34m • 1 change

2h 36m • 1 change
Want to know about travelling from Heathrow to Diss? 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 to Diss. However, there are services departing from Heathrow station and arriving at Diss station via Stratford. The journey, including transfers, takes approximately 2h 50m.
Heathrow to Diss train services, operated by Elizabeth Line (TfL), depart from Heathrow Terminals 2 & 3 station.
Heathrow to Diss train services, operated by Elizabeth Line (TfL), arrive at Diss station.
Book your Heathrow to Diss train tickets online with Elizabeth Line (TfL) and Greater Anglia.
The distance between Heathrow and Diss is 147.3 km. The road distance is 183 km.
You can take a train from Heathrow Terminals 2 & 3 to Diss via Stratford (London) in around 2h 49m.