From most locations, the cheapest flights to Berlin can be found during the month of March; however great deals can be found at other times.
Most flyers found that booking flight tickets 22 days in advance of their planned departure date is, on average, the best time to get cheap flights to Berlin.
From most locations, the cheapest flights to Berlin are found on a Sunday. Booking a Thursday departure is usually the most expensive.
On average you can find the best deals on plane tickets to Berlin when looking for flights with afternoon departure times.