The train between Kassel and Flensburg takes 4h 28m. The train service runs several times per day from Kassel 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 4 hours between Kassel and Flensburg. The earliest departure is at 6:12 AM in the morning, and the last departure from Kassel is at 4:13 PM which arrives into Flensburg at 8:41 PM. All services require a transfer, and take on average 4h 28m. The schedules shown below are for the next available departures.

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4h 28m • 1 changeWant to know about travelling from Kassel 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 Kassel to Flensburg. However, there are services departing from Kassel station and arriving at Flensburg station via Neumünster. The journey, including transfers, takes approximately 4h 28m.
Kassel to Flensburg train services, operated by Deutsche Bahn Intercity (DB IC), depart from Kassel Bahnhof Wilhelmshöhe station.
Kassel to Flensburg train services, operated by Deutsche Bahn Intercity (DB IC), arrive at Flensburg station.
Book your Kassel to Flensburg train tickets online with Deutsche Bahn Intercity (DB IC) and Deutsche Bahn Regio (DB Regional).
The distance between Kassel and Flensburg is 385.6 km. The road distance is 488 km.
You can take a train from Kassel Bahnhof Wilhelmshöhe to Flensburg via Neumünster in around 4h 51m.