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

Return flights

19 Aug - 26 Aug	Icelandair
09 Aug - 31 Aug	Icelandair
01 Aug - 23 Aug	United
13 Aug - 17 Aug	Lufthansa
23 Aug - 30 Aug	United
21 Aug - 28 Aug	Icelandair
17 Aug - 24 Aug	United
28 Aug - 04 Sep	Icelandair
30 Aug - 06 Sep	Icelandair
15 Aug - 22 Aug	United

Also check the deals for one-way flights from Seattle 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 Seattle to Berlin in August from 415€

Return flights