AirHint found the following cheapest return flights from Boston (BOS) to Berlin (BER) in August 2025 (see full year).

Return flights

10 Aug - 26 Aug	SWISS
26 Aug - 09 Sep	Aer Lingus
05 Aug - 19 Aug	Lufthansa
06 Aug - 20 Aug	Lufthansa
12 Aug - 19 Aug	Lufthansa
13 Aug - 20 Aug	Lufthansa
17 Aug - 25 Aug	Lufthansa
06 Aug - 13 Aug	SWISS
13 Aug - 27 Aug	Air France
20 Aug - 03 Sep	SWISS
05 Aug - 15 Aug	Lufthansa
13 Aug - 03 Sep	Icelandair
12 Aug - 02 Sep	United
27 Aug - 17 Sep	United
26 Aug - 16 Sep	British Airways
21 Aug - 26 Aug	Icelandair
23 Aug - 06 Sep	Icelandair

Also check the deals for one-way flights from Boston to Berlin in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Boston to Berlin in August from 388€

Return flights