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

Return flights

20 Aug - 02 Sep	Condor
21 Aug - 28 Aug	Condor	direct
27 Aug - 10 Sep	Condor
26 Aug - 02 Sep	Condor
18 Aug - 03 Sep	Condor
20 Aug - 27 Aug	Condor	direct
17 Aug - 27 Aug	Condor	direct
20 Aug - 02 Sep	Condor	direct
18 Aug - 31 Aug	Condor
18 Aug - 03 Sep	Condor	direct
27 Aug - 10 Sep	Condor	direct
26 Aug - 02 Sep	Condor	direct
18 Aug - 27 Aug	Condor	direct
18 Aug - 31 Aug	Condor	direct
18 Aug - 21 Aug	American Airlines

Also check the deals for one-way flights from Seattle to Frankfurt 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 Frankfurt in August from 530€

Return flights