The average train between Bonn and Saarlouis takes 3h 15m and the fastest train takes 3h 8m. There is a train service every few hours from Bonn to Saarlouis. 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 Bonn and Saarlouis. The earliest departure is at 4:12 AM at night, and the last departure from Bonn is at 5:15 PM which arrives into Saarlouis at 8:23 PM. All services require a transfer, and take on average 3h 15m. The schedules shown below are for the next available departures.

3h 9m • 1 change

3h 9m • 1 change

3h 8m • 1 change

3h 9m • 1 change

4h 11m • 1 change

3h 9m • 1 change

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3h 9m • 1 change

4h 11m • 1 change

3h 9m • 1 change

3h 9m • 1 change

3h 9m • 1 change

4h 11m • 1 change

3h 9m • 1 change

3h 9m • 1 change

3h 9m • 1 change

4h 11m • 1 change

3h 9m • 1 change

3h 9m • 1 change

3h 9m • 1 change
Want to know about travelling from Bonn to Saarlouis? 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 Bonn to Saarlouis. However, there are services departing from Bonn station and arriving at Saarlouis station via Koblenz Hauptbahnhof. The journey, including transfers, takes approximately 3h 15m.
Bonn to Saarlouis train services, operated by Deutsche Bahn Intercity (DB IC), depart from Bonn Hbf station.
Bonn to Saarlouis train services, operated by Deutsche Bahn Intercity (DB IC), arrive at Saarlouis Hbf station.
Book your Bonn to Saarlouis train tickets online with Deutsche Bahn Intercity (DB IC), Süwex and National Express.
The distance between Bonn and Saarlouis is 159.9 km. The road distance is 234 km.
You can take a train from Bonn Hbf to Saarlouis Hbf via Koblenz Hauptbahnhof in around 3h 35m.