Cheapest return flights from Seattle (SEA) to Helsinki (HEL), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
15 Sep 22 Sep Scandinavian Airlines
05 Sep 11 Sep Icelandair
07 Sep 17 Sep Icelandair
05 Sep 08 Oct Icelandair
05 Sep 12 Sep Scandinavian Airlines
23 Sep 02 Oct Icelandair
01 Sep 09 Sep Icelandair
07 Sep 21 Sep Icelandair
05 Sep 13 Sep Scandinavian Airlines
07 Sep 21 Sep Finnair
Direct Flight
05 Sep 12 Sep British Airways
Direct Flight
27 Sep 04 Oct Alaska Airlines
30 Sep 07 Oct Finnair
28 Sep 05 Oct Finnair
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deals for one-way flights from Seattle to Helsinki in September.

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Updated Jul 15, 2026.

About these fares

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