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 23m.

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

Copenhagen (CPH) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

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

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

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

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 48% 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.

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 May 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.

$294 Cheap Flights from Seattle to Helsinki in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $1,144 to $824. The lowest price recently found on this route was $636.

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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.

7:00 pm - 11:05 pm

SEA

HEL

18h 05m

2 stops

7:05 am - 8:40 pm

HEL

SEA

23h 35m

2 stops

$636Multiple Airlines

Wed, Aug 19 - Mon, Aug 31

7:00 pm - 12:40 am

SEA

HEL

19h 40m

3 stops

5:30 am - 8:40 pm

HEL

SEA

25h 10m

3 stops

$667Multiple Airlines

Wed, Aug 19 - Mon, Aug 31

8:00 am - 12:40 am

SEA

HEL

30h 40m

3 stops

9:20 pm - 9:07 pm

HEL

SEA

33h 47m

3 stops

$689Multiple Airlines

Thu, Aug 20 - Mon, Aug 24

8:00 am - 3:20 pm

SEA

HEL

21h 20m

2 stops

9:20 pm - 9:07 pm

HEL

SEA

33h 47m

3 stops

$737Multiple Airlines

Thu, Aug 20 - Mon, Aug 24

3:40 pm - 4:40 pm

SEA

HEL

15h 00m

2 stops

7:05 am - 8:40 pm

HEL

SEA

23h 35m

2 stops

$800Multiple Airlines

Mon, Jun 1 - Wed, Jun 10

3:40 pm - 6:40 pm

SEA

HEL

17h 00m

2 stops

11:40 am - 8:40 pm

HEL

SEA

19h 00m

2 stops

$822Icelandair

Tue, Sep 1 - Tue, Sep 15

7:10 pm - 11:10 am

SEA

HEL

30h 00m

1 stop

7:00 pm - 6:05 pm

HEL

SEA

32h 05m

1 stop

$825Turkish Airlines

Sun, Oct 18 - Tue, Oct 27

7:00 pm - 3:00 pm

SEA

HEL

34h 00m

3 stops

5:30 am - 8:40 pm

HEL

SEA

25h 10m

3 stops

$832Multiple Airlines

Mon, Jun 1 - Wed, Jun 10

3:40 pm - 7:45 pm

SEA

HEL

18h 05m

2 stops

12:25 pm - 6:00 pm

HEL

SEA

38h 35m

2 stops

$834Icelandair

Mon, Oct 19 - Mon, Oct 26

3:40 pm - 4:40 pm

SEA

HEL

15h 00m

2 stops

5:30 am - 8:40 pm

HEL

SEA

25h 10m

3 stops

$838Multiple Airlines

Mon, Jun 1 - Wed, Jun 10

Turkish Airlines flights from Seattle to Helsinki

Our best Turkish Airlines deals on Seattle to Helsinki flight tickets

Turkish Airlines

Oct 18

SEA7:10 pmSeattle/Tacoma Intl

30h 00m

1 stop

HEL11:10 amHelsinki-Vantaa

Oct 27

HEL7:00 pmHelsinki-Vantaa

32h 05m

1 stop

SEA6:05 pmSeattle/Tacoma Intl

$825

Turkish Airlines

Aug 16

SEA7:10 pmSeattle/Tacoma Intl

18h 45m

1 stop

HEL11:55 pmHelsinki-Vantaa

Aug 28

HEL12:05 pmHelsinki-Vantaa

39h 10m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

$854

Turkish Airlines

May 7

SEA7:10 pmSeattle/Tacoma Intl

30h 00m

1 stop

HEL11:10 amHelsinki-Vantaa

May 14

HEL7:35 pmHelsinki-Vantaa

31h 40m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

$861

Icelandair flights from Seattle to Helsinki

Our best Icelandair deals on Seattle to Helsinki flight tickets

Icelandair

Sep 1

SEA3:40 pmSeattle/Tacoma Intl

17h 00m

2 stops

HEL6:40 pmHelsinki-Vantaa

Sep 15

HEL11:40 amHelsinki-Vantaa

19h 00m

2 stops

SEA8:40 pmSeattle/Tacoma Intl

$822

Icelandair

Oct 19

SEA3:40 pmSeattle/Tacoma Intl

18h 05m

2 stops

HEL7:45 pmHelsinki-Vantaa

Oct 26

HEL12:25 pmHelsinki-Vantaa

38h 35m

2 stops

SEA6:00 pmSeattle/Tacoma Intl

$834

Icelandair

Oct 18

SEA7:00 pmSeattle/Tacoma Intl

14h 45m

2 stops

HEL7:45 pmHelsinki-Vantaa

Oct 27

HEL11:10 amHelsinki-Vantaa

15h 50m

2 stops

SEA6:00 pmSeattle/Tacoma Intl

$861

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 8/19

7:00 pm-11:05 pm

2 stops18h 05m

Helsinki-Vantaa

Mon 8/31

7:05 am-8:40 pm

2 stops23h 35m

$636

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 8/19

7:00 pm-12:40 am

3 stops19h 40m

Helsinki-Vantaa

Mon 8/31

5:30 am-8:40 pm

3 stops25h 10m

$667

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 8/20

8:00 am-12:40 am

3 stops30h 40m

Helsinki-Vantaa

Mon 8/24

9:20 pm-9:07 pm

3 stops33h 47m

$689

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 8/20

8:00 am-3:20 pm

2 stops21h 20m

Helsinki-Vantaa

Mon 8/24

9:20 pm-9:07 pm

3 stops33h 47m

$737

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 6/1

3:40 pm-4:40 pm

2 stops15h 00m

Helsinki-Vantaa

Wed 6/10

7:05 am-8:40 pm

2 stops23h 35m

$800

Quickest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 9/1

3:40 pm-6:40 pm

2 stops17h 00m

Helsinki-Vantaa

Tue 9/15

11:40 am-8:40 pm

2 stops19h 00m

$822

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 10/18

7:10 pm-11:10 am

1 stop30h 00m

Helsinki-Vantaa

Tue 10/27

7:00 pm-6:05 pm

1 stop32h 05m

$825

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 6/1

7:00 pm-3:00 pm

3 stops34h 00m

Helsinki-Vantaa

Wed 6/10

5:30 am-8:40 pm

3 stops25h 10m

$832

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 10/19

3:40 pm-7:45 pm

2 stops18h 05m

Helsinki-Vantaa

Mon 10/26

12:25 pm-6:00 pm

2 stops38h 35m

$834

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 6/1

3:40 pm-4:40 pm

2 stops15h 00m

Helsinki-Vantaa

Wed 6/10

5:30 am-8:40 pm

3 stops25h 10m

$838

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 Wednesday when prices can be found for as low as $777. 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 $1,154. 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 $818 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.

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 May 2026, prices for Seattle to Helsinki flights are approximately 42% 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	$471
Fastest flight time	9h 30m
Direct flights	Mon, Wed and Sat
Airports in Helsinki	1 airport

The best one-way flight to Helsinki from Seattle in the past 72 hours is $471. The best round-trip flight deal from Seattle to Helsinki found on momondo in the last 72 hours is $1,139.

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

Direct flights go from Seattle to Helsinki on Monday, 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 May 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 64.42% of all bookings. The subsequent popular models are Airbus A330 at 14.98%, Airbus A350-900 at 3.37%, and Airbus A330-900neo at 3.00%.
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 45% of the total bookings. Other popular airlines include Scandinavian Airlines with 27%, Finnair with 17%, 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 $323	Free Cancellation	Rating 7.4 1,769 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $424	Free Cancellation	Rating 7.0 650 reviews	Search Icelandair flights
American Airlines	PriceFrom $496	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights
KLM	PriceFrom $536	Free Cancellation	Rating 7.8 1,511 reviews	Search KLM flights
Finnair	PriceFrom $700	Free Cancellation	Rating 7.6 1,392 reviews	Search Finnair flights
British Airways	PriceFrom $725	Free Cancellation	Rating 6.7 7,944 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.