Originally Posted by Guy Betsy

Go to this website - http://reiseauskunft.bahn.de/bin/que...n?program=esi&
Deutsche Bahn has specials from Cologne to Amsterdam. Usually normal price around 50 Euro, you can get specials in 2nd class (no 1st class) for 19 Euro oneway.

Choose the train best suited for you... as it's cheaper with this option than to buy a regular ticket. Above site also allows you to buy your Koln airport to main station ticket!

Good surfing...