Cheapest return flights from Seattle to Helsinki in August from 978€

Best time to book flights for Seattle (SEA) to Helsinki (HEL) flights at AirHint

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

Return flights

06 Aug - 21 Aug Lufthansa
26 Aug - 02 Sep Icelandair
06 Aug - 21 Aug Finnair direct
05 Aug - 12 Aug Icelandair
08 Aug - 23 Aug Delta

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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