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

Return flights

07 Oct - 15 Oct	Icelandair
19 Oct - 24 Oct	Icelandair
14 Oct - 21 Oct	Condor
06 Oct - 22 Oct	Icelandair
22 Oct - 29 Oct	Condor
23 Oct - 06 Nov	Condor	direct
21 Oct - 02 Nov	Condor
15 Oct - 08 Nov	Condor	direct
21 Oct - 28 Oct	Condor
20 Oct - 02 Nov	Condor
26 Oct - 02 Nov	Condor	direct
27 Oct - 03 Nov	Condor
20 Oct - 27 Oct	Condor
01 Oct - 08 Oct	Condor
19 Oct - 24 Oct	Condor	direct
08 Oct - 01 Nov	Condor
20 Oct - 02 Nov	Condor	direct
02 Oct - 09 Oct	Condor
25 Oct - 01 Nov	Condor	direct
08 Oct - 01 Nov	Condor	direct

Also check the deals for one-way flights from Seattle to Frankfurt 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 Frankfurt in October from $479

Return flights