Cheapest return flights from Seattle to Helsinki in October from 594€

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

Return flights

30 Oct - 12 Nov Hawaiian Airlines
28 Oct - 04 Nov Finnair
29 Oct - 05 Nov Finnair
30 Oct - 06 Nov Finnair
26 Oct - 02 Nov Finnair
21 Oct - 28 Oct Finnair
23 Oct - 30 Oct Alaska Airlines
20 Oct - 27 Oct Alaska Airlines
31 Oct - 07 Nov Alaska Airlines
24 Oct - 31 Oct jetBlue
17 Oct - 24 Oct Alaska Airlines
18 Oct - 25 Oct Alaska Airlines
22 Oct - 29 Oct Finnair
25 Oct - 01 Nov Finnair
27 Oct - 03 Nov Alaska Airlines

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

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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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