Which airport is the most popular layover for flights between Seattle and Helsinki?

Copenhagen (CPH) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Helsinki?

Icelandair, Scandinavian Airlines and Finnair are the top three most popular airlines that fly to Helsinki from Seattle according to our data. Icelandair is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Helsinki. Keep in mind that there are 6 different airlines that fly to Helsinki on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Seattle to Helsinki?

Flights via Amsterdam (AMS) offer the lowest average round-trip price of $703.

Which layover airport has the shortest travel time from Seattle to Helsinki?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 12h 24m.

Which layover airport has the shortest connection time from Seattle to Helsinki?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 32m.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Helsinki-Vantaa?

Icelandair is the most popular carrier operating from Seattle/Tacoma Intl to Helsinki-Vantaa

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport?

As of March 2026, there are 6 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport.

What documentation or ID do you need to fly to Helsinki-Vantaa Airport?

The necessary travel and health documents for your Helsinki-Vantaa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$212 Cheap Flights from Seattle to Helsinki in 2026

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Round-trip

One-way

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Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:55 pm - 10:35 am

SEA

HEL

32h 40m

1 stop

9:05 pm - 1:45 pm

HEL

SEA

26h 40m

1 stop

$400Scandinavian Airlines

Sun, Aug 30 - Thu, Sep 24

3:55 pm - 12:55 pm

SEA

HEL

35h 00m

2 stops

9:05 pm - 1:45 pm

HEL

SEA

26h 40m

1 stop

$408Scandinavian Airlines

Sun, Aug 30 - Thu, Sep 24

3:55 pm - 12:55 pm

SEA

HEL

35h 00m

2 stops

9:15 pm - 1:45 pm

HEL

SEA

50h 30m

2 stops

$415Scandinavian Airlines

Sun, Aug 30 - Wed, Sep 23

3:55 pm - 10:35 am

SEA

HEL

32h 40m

1 stop

9:05 pm - 1:45 pm

HEL

SEA

26h 40m

1 stop

$428Scandinavian Airlines

Sun, Aug 30 - Mon, Sep 21

3:55 pm - 10:35 am

SEA

HEL

32h 40m

1 stop

9:15 pm - 1:45 pm

HEL

SEA

26h 30m

2 stops

$446Scandinavian Airlines

Sun, Aug 30 - Mon, Sep 21

3:55 pm - 10:35 am

SEA

HEL

32h 40m

1 stop

4:00 pm - 1:45 pm

HEL

SEA

31h 45m

1 stop

$450Scandinavian Airlines

Sat, Aug 29 - Fri, Sep 25

3:55 pm - 11:50 pm

SEA

HEL

21h 55m

2 stops

9:15 pm - 1:45 pm

HEL

SEA

26h 30m

2 stops

$451Scandinavian Airlines

Sun, Aug 30 - Mon, Sep 21

3:55 pm - 10:35 am

SEA

HEL

32h 40m

1 stop

9:15 pm - 1:45 pm

HEL

SEA

50h 30m

2 stops

$458Scandinavian Airlines

Sat, Aug 29 - Wed, Sep 23

3:55 pm - 12:55 pm

SEA

HEL

35h 00m

2 stops

1:25 pm - 1:45 pm

HEL

SEA

34h 20m

2 stops

$465Scandinavian Airlines

Sun, Aug 30 - Mon, Sep 21

7:00 pm - 11:05 pm

SEA

HEL

18h 05m

2 stops

7:05 am - 8:40 pm

HEL

SEA

23h 35m

2 stops

$468Multiple Airlines

Wed, May 13 - Tue, May 26

Scandinavian Airlines flights from Seattle to Helsinki

Our best Scandinavian Airlines deals on Seattle to Helsinki flight tickets

Scandinavian Airlines

Aug 30

SEA3:55 pmSeattle/Tacoma Intl

32h 40m

1 stop

HEL10:35 amHelsinki-Vantaa

Sep 24

HEL9:05 pmHelsinki-Vantaa

26h 40m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$400

Scandinavian Airlines

Aug 30

SEA3:55 pmSeattle/Tacoma Intl

32h 40m

1 stop

HEL10:35 amHelsinki-Vantaa

Sep 23

HEL9:15 pmHelsinki-Vantaa

50h 30m

2 stops

SEA1:45 pmSeattle/Tacoma Intl

$408

Scandinavian Airlines

Aug 30

SEA3:55 pmSeattle/Tacoma Intl

42h 40m

2 stops

HEL8:35 pmHelsinki-Vantaa

Sep 24

HEL1:25 pmHelsinki-Vantaa

34h 20m

2 stops

SEA1:45 pmSeattle/Tacoma Intl

$415

Icelandair flights from Seattle to Helsinki

Our best Icelandair deals on Seattle to Helsinki flight tickets

Icelandair

Apr 15

SEA3:40 pmSeattle/Tacoma Intl

12h 20m

1 stop

HEL2:00 pmHelsinki-Vantaa

Apr 22

HEL3:00 pmHelsinki-Vantaa

15h 40m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

$647

Icelandair

Apr 12

SEA3:40 pmSeattle/Tacoma Intl

12h 20m

1 stop

HEL2:00 pmHelsinki-Vantaa

Apr 25

HEL3:00 pmHelsinki-Vantaa

12h 55m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$651

Icelandair

Apr 12

SEA3:40 pmSeattle/Tacoma Intl

12h 20m

1 stop

HEL2:00 pmHelsinki-Vantaa

Apr 25

HEL3:00 pmHelsinki-Vantaa

12h 55m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$652

Fly from

Fly to

Route

Depart

Return

Price

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-10:35 am

1 stop32h 40m

Helsinki-Vantaa

Thu 9/24

9:05 pm-1:45 pm

1 stop26h 40m

$400

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-12:55 pm

2 stops35h 00m

Helsinki-Vantaa

Thu 9/24

9:05 pm-1:45 pm

1 stop26h 40m

$408

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-12:55 pm

2 stops35h 00m

Helsinki-Vantaa

Wed 9/23

9:15 pm-1:45 pm

2 stops50h 30m

$415

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-10:35 am

1 stop32h 40m

Helsinki-Vantaa

Mon 9/21

9:05 pm-1:45 pm

1 stop26h 40m

$428

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-10:35 am

1 stop32h 40m

Helsinki-Vantaa

Mon 9/21

9:15 pm-1:45 pm

2 stops26h 30m

$446

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sat 8/29

3:55 pm-10:35 am

1 stop32h 40m

Helsinki-Vantaa

Fri 9/25

4:00 pm-1:45 pm

1 stop31h 45m

$450

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-11:50 pm

2 stops21h 55m

Helsinki-Vantaa

Mon 9/21

9:15 pm-1:45 pm

2 stops26h 30m

$451

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sat 8/29

3:55 pm-10:35 am

1 stop32h 40m

Helsinki-Vantaa

Wed 9/23

9:15 pm-1:45 pm

2 stops50h 30m

$458

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-12:55 pm

2 stops35h 00m

Helsinki-Vantaa

Mon 9/21

1:25 pm-1:45 pm

2 stops34h 20m

$465

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 5/13

7:00 pm-11:05 pm

2 stops18h 05m

Helsinki-Vantaa

Tue 5/26

7:05 am-8:40 pm

2 stops23h 35m

$468

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Helsinki

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Seattle and Helsinki?

What is the cheapest month to fly to Helsinki?

The month of January is, on average, the cheapest month to fly to Helsinki from Seattle, with most prices found around $539. If you aren’t able to travel during the month of January, then book flights to Helsinki from Seattle during October instead. Flights to Helsinki in October, while not as cheap as those in January, still average around $571.

What is the cheapest day to depart on your flight to Helsinki?

The cheapest day to depart on your flight to Helsinki is on a Tuesday when prices can be found for as low as $809. This is often the case because there is less demand to fly during this day of the week. Flights from Seattle to Helsinki on a Saturday will generally be more expensive and average around $971. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Seattle/Tacoma Intl to Helsinki-Vantaa flight route?

Fly from Seattle/Tacoma Intl to Helsinki-Vantaa for the best Seattle/Tacoma Intl - Helsinki-Vantaa flight prices

How far in advance should I book a flight to Helsinki?

You are more likely to see cheaper flights to Helsinki from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Helsinki for around $786 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Helsinki from Seattle for as low as $585 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Helsinki-Vantaa flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Helsinki-Vantaa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Helsinki flights?

No. A direct flight is the cheapest option for a flight between Seattle to Helsinki.

How have Seattle to Helsinki flight prices changed over time?

As of March 2026, prices for Seattle to Helsinki flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Helsinki

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Helsinki according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Helsinki (SEA to HEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Helsinki

Best Price Found	$299
Fastest flight time	9h 30m
Direct flights	Mon, Tue, Wed and Sat
Airports in Helsinki	1 airport

The best one-way flight to Helsinki from Seattle in the past 72 hours is $299. The best round-trip flight deal from Seattle to Helsinki found on momondo in the last 72 hours is $809.

The fastest flight from Seattle to Helsinki takes 9h 30m

Direct flights go from Seattle to Helsinki on Monday, Tuesday, Wednesday and Saturday. The only airline offering direct flights is Finnair.

There is 1 airport in Helsinki. From Seattle there are direct flights to Helsinki-Vantaa (HEL).

Search flight deals

How far is Seattle/Tacoma Intl to Helsinki-Vantaa by plane?
The distance between Seattle/Tacoma Intl and Helsinki-Vantaa is about 4763.3 mi. Flights usually cover this in 9h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport?
As of March 2026, there are 6 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport.
What documentation or ID do you need to fly to Helsinki-Vantaa Airport?
The necessary travel and health documents for your Helsinki-Vantaa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Helsinki?
momondo data reveals that the most frequently booked plane model on the route from Seattle to Helsinki is Airbus A330-300, representing 48.90% of all bookings. The subsequent popular models are Airbus A330 at 10.99%, Airbus A350-900 at 9.34%, and Boeing 787-9 Dreamliner at 5.49%.
What is the most popular airline from Seattle to Helsinki?
Based on momondo bookings for flights between Seattle and Helsinki, the leading airline is Icelandair, making up 42% of the total bookings. Other popular airlines include Scandinavian Airlines with 24%, Finnair with 23%, and American Airlines with 5%.

Best airlines flying from Seattle to Helsinki

Compare and see reviews for airlines that fly from Seattle to Helsinki with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $323	Free Cancellation	Rating 7.3 1,703 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $424	Free Cancellation	Rating 7.1 617 reviews	Search Icelandair flights
KLM	PriceFrom $536	Free Cancellation	Rating 7.8 1,463 reviews	Search KLM flights
American Airlines	PriceFrom $601	Free Cancellation	Rating 7.1 11,380 reviews	Search American Airlines flights
Finnair	PriceFrom $654	Free Cancellation	Rating 7.6 1,370 reviews	Search Finnair flights
British Airways	PriceFrom $725	Free Cancellation	Rating 6.7 7,774 reviews	Search British Airways flights

Vantaa

Espoo

Lahti

Kotka

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Helsinki?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Helsinki. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Helsinki with flexible booking policies on momondo?

Yes. All flights to Helsinki from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Helsinki?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Helsinki.

I’m not ready to book a flight from Seattle to Helsinki right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Helsinki from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.