The cheapest flight to Copenhagen you can get by boooking 22 days before departure.
The most popular airlines on the route Cologne - Copenhagen: Ryanair (FR).
The cheapest flights you can book on the route Cologne - Bonn Airport (CGN) - Kastrup (CPH).
Direct flights last about 1h 25min.
Direct flights available 7 days a week.
Direct flights: Ryanair (FR).