Cost and time from bonn to cologne by train?

Question

we would like to know the cost and time of travel from cologne to bonn by train

Answer 1

http://reiseauskunft.bahn.de/bin/query.e...

From: Cologne

To:Bonn

Travel time about 20-30 minutes.  Cost about 9 euros for IC or EC trains and a little cheaper for RB trains.

If there are more than 2 of you, you might want to buy a group day ticket / Lander ticket (good for groups of 2-5 from 09:00 until 03:00 the next day) to get to Bonn instead of buying several individual tickets.  The ticket is 2 euros cheaper if purchased from the ticket machines rather than from the DB ticket agent.  There are ticket machines that offer English as an option.  Lander tickets are 27 euros for North Rhine-Westphalia if purchased from the machines. - http://www.bahn.de/-S:PtVORd:eVg4g9NNQpy...

And if you are a family with children - Children up to 14 years of age travel for free, when accompanied by their parents or grandparents. However, the number of your children must be included on your ticket.  - http://www.bahn.de/-S:PtVORd:eVg4g9NNQpy...

If using the local RB trains, the children do not have to be included on the tickets.