Cheapest return SEA–HEL flights, August

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

Return flights

12 Aug - 19 Aug Icelandair
04 Aug - 11 Aug Icelandair
13 Aug - 20 Aug Icelandair
07 Aug - 15 Aug Scandinavian Airlines
06 Aug - 13 Aug Icelandair
03 Aug - 10 Aug Icelandair
14 Aug - 17 Aug Scandinavian Airlines
10 Aug - 17 Aug Icelandair
13 Aug - 16 Aug Icelandair
14 Aug - 17 Aug Finnair direct

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

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