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

Reykjavik (KEF) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.

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

Lufthansa and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Helsinki-Vantaa

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 53% of people opting to fly with this airline when traveling to Helsinki. Keep in mind that there are 5 different airlines that fly to Helsinki on a routine basis, so you have a few additional options to choose from.

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

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 14h 36m.

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

Reykjavik (KEF) has the shortest average layover time for this route: 2h 40m.

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

Flights via Amsterdam (AMS) offer the lowest average round-trip price of $844.

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 July 2026, there are 5 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.

$226 Cheap Flights from Seattle to Helsinki in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Helsinki

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 9:20 pm

SEA

HEL

27h 20m

2 stops

7:05 am - 10:42 pm

HEL

SEA

25h 37m

3 stops

$521Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

8:00 am - 4:40 pm

SEA

HEL

22h 40m

2 stops

7:05 am - 9:07 pm

HEL

SEA

24h 02m

2 stops

$530Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

5:50 am - 4:40 pm

SEA

HEL

24h 50m

3 stops

8:30 am - 10:42 pm

HEL

SEA

24h 12m

3 stops

$533Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

8:00 am - 6:20 pm

SEA

HEL

24h 20m

2 stops

8:30 am - 10:42 pm

HEL

SEA

24h 12m

3 stops

$535Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

8:00 am - 6:20 pm

SEA

HEL

24h 20m

2 stops

7:05 am - 9:07 pm

HEL

SEA

24h 02m

2 stops

$536Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

7:00 pm - 9:20 pm

SEA

HEL

16h 20m

2 stops

8:30 am - 8:40 pm

HEL

SEA

22h 10m

2 stops

$575Multiple Airlines

Mon, Sep 14 - Tue, Sep 29

7:00 pm - 9:20 pm

SEA

HEL

16h 20m

2 stops

3:40 pm - 11:45 am

HEL

SEA

30h 05m

2 stops

$581Multiple Airlines

Tue, Aug 18 - Mon, Aug 31

8:00 am - 12:40 am

SEA

HEL

30h 40m

3 stops

8:30 am - 9:07 pm

HEL

SEA

22h 37m

2 stops

$585Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

7:00 pm - 9:20 pm

SEA

HEL

16h 20m

2 stops

3:40 pm - 11:45 am

HEL

SEA

30h 05m

2 stops

$591Multiple Airlines

Tue, Aug 18 - Mon, Aug 31

7:00 pm - 3:00 pm

SEA

HEL

34h 00m

3 stops

11:05 am - 11:45 am

HEL

SEA

34h 40m

2 stops

$601Multiple Airlines

Tue, Aug 18 - Mon, Aug 31

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Scandinavian Airlines flights from Seattle to Helsinki

Our best Scandinavian Airlines deals on Seattle to Helsinki flight tickets

Scandinavian Airlines

Sep 15

SEA3:55 pmSeattle/Tacoma Intl

13h 50m

2 stops

HEL3:45 pmHelsinki-Vantaa

Oct 6

HEL7:15 amHelsinki-Vantaa

16h 30m

2 stops

SEA1:45 pmSeattle/Tacoma Intl

$688

Scandinavian Airlines

Sep 15

SEA3:55 pmSeattle/Tacoma Intl

13h 50m

2 stops

HEL3:45 pmHelsinki-Vantaa

Oct 6

HEL11:15 amHelsinki-Vantaa

12h 30m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$689

Scandinavian Airlines

Sep 13

SEA3:55 pmSeattle/Tacoma Intl

18h 30m

1 stop

HEL8:25 pmHelsinki-Vantaa

Sep 29

HEL11:15 amHelsinki-Vantaa

12h 30m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$702

Icelandair flights from Seattle to Helsinki

Our best Icelandair deals on Seattle to Helsinki flight tickets

Icelandair

Jul 12

SEA3:40 pmSeattle/Tacoma Intl

20h 50m

1 stop

HEL10:30 pmHelsinki-Vantaa

Jul 20

HEL11:30 pmHelsinki-Vantaa

22h 15m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$884

Icelandair

Jul 12

SEA7:00 pmSeattle/Tacoma Intl

17h 30m

1 stop

HEL10:30 pmHelsinki-Vantaa

Aug 8

HEL11:30 pmHelsinki-Vantaa

22h 15m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$927

Icelandair

Jul 12

SEA3:40 pmSeattle/Tacoma Intl

20h 50m

1 stop

HEL10:30 pmHelsinki-Vantaa

Jul 18

HEL11:30 pmHelsinki-Vantaa

22h 15m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$930

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

8:00 am-9:20 pm

2 stops27h 20m

Helsinki-Vantaa

Tue 8/25

7:05 am-10:42 pm

3 stops25h 37m

$521

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

8:00 am-4:40 pm

2 stops22h 40m

Helsinki-Vantaa

Tue 8/25

7:05 am-9:07 pm

2 stops24h 02m

$530

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

5:50 am-4:40 pm

3 stops24h 50m

Helsinki-Vantaa

Tue 8/25

8:30 am-10:42 pm

3 stops24h 12m

$533

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

8:00 am-6:20 pm

2 stops24h 20m

Helsinki-Vantaa

Tue 8/25

8:30 am-10:42 pm

3 stops24h 12m

$535

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

8:00 am-6:20 pm

2 stops24h 20m

Helsinki-Vantaa

Tue 8/25

7:05 am-9:07 pm

2 stops24h 02m

$536

Quickest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 9/14

7:00 pm-9:20 pm

2 stops16h 20m

Helsinki-Vantaa

Tue 9/29

8:30 am-8:40 pm

2 stops22h 10m

$575

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

7:00 pm-9:20 pm

2 stops16h 20m

Helsinki-Vantaa

Mon 8/31

3:40 pm-11:45 am

2 stops30h 05m

$581

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

8:00 am-12:40 am

3 stops30h 40m

Helsinki-Vantaa

Tue 8/25

8:30 am-9:07 pm

2 stops22h 37m

$585

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

7:00 pm-9:20 pm

2 stops16h 20m

Helsinki-Vantaa

Mon 8/31

3:40 pm-11:45 am

2 stops30h 05m

$591

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/18

7:00 pm-3:00 pm

3 stops34h 00m

Helsinki-Vantaa

Mon 8/31

11:05 am-11:45 am

2 stops34h 40m

$601

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 $543. 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 Wednesday when prices can be found for as low as $628. 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 Sunday will generally be more expensive and average around $1,184. 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 from Seattle 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 $866 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 $595 on momondo.

What cabin class options are available on Seattle to Helsinki flights?

There are 3 cabin classes available to choose from on Seattle to Helsinki 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?

You could potentially save up to 40% on your flight if you consider stops on a Seattle to Helsinki flight.

How have Seattle to Helsinki flight prices changed over time?

As of July 2026, prices for Seattle to Helsinki flights are approximately 36% cheaper 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	$405
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 $405. The best round-trip flight deal from Seattle to Helsinki found on momondo in the last 72 hours is $1,058.

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

Direct flights go from Seattle to Helsinki on Monday, Tuesday, Wednesday and Saturday. There are no airlines offering direct flights.

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

Search flight deals

Frequently asked questions about flying from Seattle to Helsinki

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 July 2026, there are 5 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 51.49% of all bookings. The subsequent popular models are Airbus A330 at 14.18%, Boeing 787-9 Dreamliner at 5.97%, and Airbus A350-900 at 5.22%.
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 51% of the total bookings. Other popular airlines include Scandinavian Airlines with 27%, Finnair with 14%, and British Airways with 4%.

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 $322	Free Cancellation	Rating 7.4 1,861 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $517	Free Cancellation	Rating 7.0 695 reviews	Search Icelandair flights
British Airways	PriceFrom $725	Free Cancellation	Rating 6.7 8,088 reviews	Search British Airways flights
Finnair	PriceFrom $790	Free Cancellation	Rating 7.6 1,418 reviews	Search Finnair flights
Lufthansa	PriceFrom $852	Free Cancellation	Rating 6.8 8,107 reviews	Search Lufthansa 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.