Cheap flights from Helsinki to SeaTac from CA $899

View CA $899 flight on Tue, Nov. 18, 2025Opens in a new window

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Cheap flights from Helsinki (HEL) to SeaTac (SEA)

Prices were available within the past 7 days and start at CA $899 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Helsinki (HEL) to Seattle (SEA)

May is typically the cheapest month to fly

From CA $711 - CA $1,391 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.