538 - 1,353 USD
In general, when booking your flight to Cologne, November is the cheapest month on average.
Most flyers found that booking flight tickets 46 days in advance of their planned departure date is, on average, the best time to get cheap flights to Cologne.
From most locations, the cheapest flights to Cologne are found on a Thursday. Booking a Monday departure is usually the most expensive.
On average you can find the best deals on plane tickets to Cologne when looking for flights with morning departure times.