The average train between Dortmund and Flensburg takes 5h 35m and the fastest train takes 5h 14m. The train service runs several times per day from Dortmund to Flensburg. 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 3 hours between Dortmund and Flensburg. The earliest departure is at 3:42 AM at night, and the last departure from Dortmund is at 9:25 PM which arrives into Flensburg at 7:43 AM. All services require a transfer, and take on average 5h 35m. The schedules shown below are for the next available departures.

5h 59m • 1 change

5h 17m • 1 change

5h 16m • 1 change

5h 17m • 1 change

5h 17m • 1 change

5h 16m • 1 change

5h 17m • 1 change

5h 16m • 1 change

5h 59m • 1 change

5h 17m • 1 change

5h 16m • 1 change

5h 17m • 1 change
Want to know about travelling from Dortmund to Flensburg? 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 Dortmund to Flensburg. However, there are services departing from Dortmund station and arriving at Flensburg station via Hamburg Hbf. The journey, including transfers, takes approximately 5h 35m.
Dortmund to Flensburg train services, operated by Deutsche Bahn Intercity (DB IC), depart from Dortmund Hbf station.
Dortmund to Flensburg train services, operated by Deutsche Bahn Intercity (DB IC), arrive at Flensburg station.
Book your Dortmund to Flensburg train tickets online with Deutsche Bahn Intercity (DB IC), Danish Railways (DSB) and Deutsche Bahn Regio (DB Regional).
The distance between Dortmund and Flensburg is 386.6 km. The road distance is 515 km.
You can take a train from Dortmund Hbf to Flensburg via Hamburg Hbf in around 5h 29m.