Originally Posted by alex1948
Yes, it's true that there are fast trains linking Cologne with Frankfurt, Dusseldorf and Amsterdam but very few of these actually stop at Cologne airport's rail station.
NorthRhein-Westpahlia alone has 20 million inhabitants, bordering areas similar. This is the highest popualtion density area of Europe. It is not a hub, but neither are LGW and Oakland. Although my final destination is in Holland, I would take this flight.