Cheapest return flights from Seattle to Helsinki in August from 714€

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

Return flights

21 Aug - 16 Sep Icelandair
02 Aug - 16 Aug Icelandair
08 Aug - 11 Aug Icelandair
02 Aug - 16 Aug Finnair direct

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

Skyscanner

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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