Question : How long do most people stay in Berlin?
Answer : Of course you're not most people, but if you were, you'd stay roughly 15 days.
Question : Is the price you found a good deal?
Answer : Ranging from $450 to $920, prices for BOS to SXF fluctuate less than most routes from the United States. The further out you book a route, the more likely you are to save.
Question : Is price more important than specific travel days for you?
Answer : Sunday is your lowest-cost day to fly in August. Flexibility is paramount when booking travel plans in order to keep travel costs down.
Question : Looking for the cheapest flight over the next 30 days?
Answer : Since low prices are preferred, look at Jul 19th. As of Jul 17th, it's showing the cheapest ticket sales at $530. That is 29% below the average price for this route, so you can spend that extra money on a fun experience in Berlin.