Question : If your plans are flexible, have you considered changing your departure day?
Answer : For the month of February, the cheapest day to fly is Monday. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.
Question : Have you considered flying into another airport besides Cologne Bonn Airport (CGN) in order to save?
Answer : Dusseldorf International Airport (DUS) is just 32 miles away and on average, flights are 20% cheaper for the coming two months. Save a few bucks and put it towards your next trip.