Cheapest one-way flights from Seattle to Helsinki in May from $341

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

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

One-Way flights

21 May Icelandair
27 May WestJet
31 May WestJet
29 May Icelandair
28 May WestJet
31 May Finnair direct
29 May Finnair direct
25 May Alaska Airlines
24 May Finnair direct
22 May Finnair direct

Also check the deals for return flights from Seattle to Helsinki in May.

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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