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

Return flights

05 Oct - 21 Oct	Scandinavian Airlines
05 Oct - 11 Oct	Scandinavian Airlines
10 Oct - 24 Oct	Scandinavian Airlines
01 Oct - 15 Oct	Scandinavian Airlines
18 Oct - 25 Oct	Icelandair
24 Oct - 31 Oct	Icelandair
01 Oct - 07 Oct	Scandinavian Airlines
06 Oct - 13 Oct	Condor
30 Oct - 06 Nov	United
21 Oct - 28 Oct	United
08 Oct - 15 Oct	United
27 Oct - 03 Nov	United

Also check the deals for one-way flights from Seattle to Berlin in October.

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 October from 401€

Return flights