The average train between Cologne and Idstein takes 2h 19m and the fastest train takes 1h 52m. There is a train service every few hours from Cologne to Idstein. 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 Cologne and Idstein. The earliest departure is at 5:20 AM in the morning, and the last departure from Cologne is at 8:34 PM which arrives into Idstein at 12:07 AM. All services require a transfer, and take on average 2h 19m. The schedules shown below are for the next available departures.

2h 22m • 1 change

2h 22m • 1 change

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2h 17m • 1 change

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2h 22m • 1 change

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2h 17m • 1 change

2h 22m • 1 change

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2h 22m • 1 change
Want to know about travelling from Cologne to Idstein? 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 Cologne to Idstein. However, there are services departing from Cologne station and arriving at Idstein station via Frankfurt. The journey, including transfers, takes approximately 2h 19m.
Cologne to Idstein train services, operated by Deutsche Bahn Intercity (DB IC), depart from Köln Messe/Deutz Bf station.
Cologne to Idstein train services, operated by Deutsche Bahn Intercity (DB IC), arrive at Idstein Bahnhof station.
The distance between Cologne and Idstein is 122.4 km. The road distance is 218 km.
You can take a train from Köln Messe/Deutz Bf to Idstein Bahnhof via Frankfurt in around 2h 10m.