₩676,100 Cheap Flights from Seattle (SEA) to Helsinki (HEL)

View ₩676,100 flight on Mon, Oct 6, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Helsinki-Vantaa Airport (HEL)

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Cheap Flights from Seattle to Helsinki (SEA-HEL)

Prices were available within the past 7 days and start at ₩676,100 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to Helsinki-Vantaa Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey between Seattle - Tacoma Intl. Airport (SEA) and Helsinki-Vantaa Airport was . Cheap tickets don’t last forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to Vantaa Airport (HEL)?
Most flights can be canceled online, but every air carrier has a different set of terms and conditions. If you do need to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from Sea-Tac Airport to Helsinki-Vantaa Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Seattle - Tacoma Intl. Airport (SEA) to Helsinki-Vantaa Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from SEA to HEL?
SeaTac to Vantaa is around 7,700 kilometers, so get ready to spend quite a while in the air. Make sure you pack all the essentials, from your hoodie to your headphones. Take a couple of snacks to nibble on throughout your trip too.
Which airlines fly direct from Sea-Tac Airport to HEL?
Flying directly between Sea-Tac Airport and Vantaa Airport (HEL) isn’t possible at present. However, you’ll still be able to find a flight to Vantaa with at least one stop.
Are Seattle - Tacoma Intl. Airport (SEA) to HEL flight tickets cheaper when they're purchased at the last minute?
Booking your trip from SEA to Helsinki Airport at the last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you’d prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred carrier hasn’t released tickets yet, check back often as deals are updated on Expedia all the time.
*Available to Expedia members.