Cheapest one-way flights from Seattle to Helsinki in August from 376€

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

One-Way flights

09 Aug Icelandair
06 Aug Icelandair
05 Aug Icelandair
08 Aug Icelandair
01 Aug Icelandair
07 Aug Turkish Airlines
06 Aug British Airways direct
07 Aug British Airways direct

Also check the deals for return 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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