Cheapest return flights from Seattle to Helsinki in January from $720

AirHint found the following cheapest return flights from Seattle (SEA) to Helsinki (HEL) in January 2026 (see full year).

Return flights

01 Jan - 24 Jan Scandinavian Airlines
13 Jan - 20 Jan Finnair
18 Jan - 25 Jan Finnair
20 Jan - 27 Jan Finnair
25 Jan - 01 Feb Finnair
11 Jan - 18 Jan Finnair
28 Jan - 04 Feb Finnair
22 Jan - 29 Jan Finnair
15 Jan - 22 Jan Finnair
29 Jan - 05 Feb Finnair
06 Jan - 13 Jan Finnair
27 Jan - 03 Feb Finnair
19 Jan - 26 Jan Finnair
26 Jan - 02 Feb Finnair
30 Jan - 06 Feb Finnair
21 Jan - 28 Jan Finnair
31 Jan - 07 Feb Finnair

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

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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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