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Cheap flights from Seattle to Helsinki from $270

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Helsinki departing on 2/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Helsinki

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:10 am - 10:40 am
SEA
-
HEL
17h 30m2 stops
Scandinavian Airlines Logo
11:20 am - 10:21 pm
HEL
-
SEA
21h 01m2 stops
$623Scandinavian Airlines
Tue, Mar 3 - Sun, Mar 8
Scandinavian Airlines Logo
11:35 am - 3:25 pm
SEA
-
HEL
17h 50m2 stops
Scandinavian Airlines Logo
11:15 am - 10:17 pm
HEL
-
SEA
21h 02m2 stops
$624Scandinavian Airlines
Fri, Feb 27 - Tue, May 12
Scandinavian Airlines Logo
7:20 am - 10:35 am
SEA
-
HEL
41h 15m2 stops
Scandinavian Airlines Logo
4:00 pm - 10:25 pm
HEL
-
SEA
40h 25m2 stops
$627Scandinavian Airlines
Mon, Apr 13 - Mon, Apr 20
Scandinavian Airlines Logo
12:25 pm - 8:20 pm
SEA
-
HEL
21h 55m2 stops
Scandinavian Airlines Logo
11:20 am - 10:25 pm
HEL
-
SEA
21h 05m2 stops
$635Scandinavian Airlines
Sun, Feb 8 - Tue, Feb 24
Scandinavian Airlines Logo
11:30 am - 3:25 pm
SEA
-
HEL
17h 55m2 stops
Scandinavian Airlines Logo
11:20 am - 10:22 pm
HEL
-
SEA
21h 02m2 stops
$643Scandinavian Airlines
Thu, Jan 22 - Thu, Feb 12
Scandinavian Airlines Logo
11:35 am - 3:25 pm
SEA
-
HEL
17h 50m2 stops
Scandinavian Airlines Logo
11:15 am - 10:05 pm
HEL
-
SEA
20h 50m2 stops
$646Scandinavian Airlines
Fri, Feb 27 - Tue, May 12
Scandinavian Airlines Logo
7:10 am - 3:25 pm
SEA
-
HEL
22h 15m2 stops
Scandinavian Airlines Logo
6:55 am - 6:58 pm
HEL
-
SEA
22h 03m3 stops
$650Scandinavian Airlines
Wed, Jan 21 - Sun, Feb 8
Scandinavian Airlines Logo
11:35 am - 3:25 pm
SEA
-
HEL
17h 50m2 stops
Scandinavian Airlines Logo
11:05 am - 10:17 pm
HEL
-
SEA
21h 12m3 stops
$653Scandinavian Airlines
Fri, Feb 27 - Tue, May 12
Scandinavian Airlines Logo
11:45 am - 3:20 pm
SEA
-
HEL
17h 35m2 stops
Scandinavian Airlines Logo
11:15 am - 7:00 pm
HEL
-
SEA
17h 45m2 stops
$654Scandinavian Airlines
Tue, Apr 7 - Tue, Apr 14
Icelandair Logo
2:35 pm - 12:55 pm
SEA
-
HEL
12h 20m1 stop
Icelandair Logo
1:55 pm - 5:00 pm
HEL
-
SEA
13h 05m1 stop
$655Icelandair
Wed, Jan 21 - Sat, Feb 7

Scandinavian Airlines flights from Seattle to Helsinki

Our best Scandinavian Airlines deals on Seattle to Helsinki flight tickets
Scandinavian Airlines
Mar 3
SEA7:10 amSeattle/Tacoma Intl
17h 30m
2 stops
HEL10:40 amHelsinki-Vantaa
Mar 8
HEL11:20 amHelsinki-Vantaa
21h 01m
2 stops
SEA10:21 pmSeattle/Tacoma Intl
$623
Find similar
Scandinavian Airlines
Feb 27
SEA11:35 amSeattle/Tacoma Intl
17h 50m
2 stops
HEL3:25 pmHelsinki-Vantaa
May 12
HEL11:15 amHelsinki-Vantaa
21h 02m
2 stops
SEA10:17 pmSeattle/Tacoma Intl
$624
Find similar
Scandinavian Airlines
Apr 13
SEA7:20 amSeattle/Tacoma Intl
41h 15m
2 stops
HEL10:35 amHelsinki-Vantaa
Apr 20
HEL4:00 pmHelsinki-Vantaa
40h 25m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$627
Find similar

Icelandair flights from Seattle to Helsinki

Our best Icelandair deals on Seattle to Helsinki flight tickets
Icelandair
Jan 21
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
HEL12:55 pmHelsinki-Vantaa
Feb 8
HEL1:55 pmHelsinki-Vantaa
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$655
Find similar
Icelandair
Mar 1
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
HEL12:55 pmHelsinki-Vantaa
Mar 8
HEL1:55 pmHelsinki-Vantaa
13h 05m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
$656
Find similar
Icelandair
Jan 22
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
HEL12:55 pmHelsinki-Vantaa
Feb 12
HEL1:55 pmHelsinki-Vantaa
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$673
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 21, 2025.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 3/3

7:10 am-10:40 am

2 stops17h 30m

Helsinki-Vantaa

Sun 3/8

11:20 am-10:21 pm

2 stops21h 01m

$623

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Fri 2/27

11:35 am-3:25 pm

2 stops17h 50m

Helsinki-Vantaa

Tue 5/12

11:15 am-10:17 pm

2 stops21h 02m

$624

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 4/13

7:20 am-10:35 am

2 stops41h 15m

Helsinki-Vantaa

Mon 4/20

4:00 pm-10:25 pm

2 stops40h 25m

$627

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 2/8

12:25 pm-8:20 pm

2 stops21h 55m

Helsinki-Vantaa

Tue 2/24

11:20 am-10:25 pm

2 stops21h 05m

$635

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 1/22

11:30 am-3:25 pm

2 stops17h 55m

Helsinki-Vantaa

Thu 2/12

11:20 am-10:22 pm

2 stops21h 02m

$643

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Fri 2/27

11:35 am-3:25 pm

2 stops17h 50m

Helsinki-Vantaa

Tue 5/12

11:15 am-10:05 pm

2 stops20h 50m

$646

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 1/21

7:10 am-3:25 pm

2 stops22h 15m

Helsinki-Vantaa

Sun 2/8

6:55 am-6:58 pm

3 stops22h 03m

$650

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Fri 2/27

11:35 am-3:25 pm

2 stops17h 50m

Helsinki-Vantaa

Tue 5/12

11:05 am-10:17 pm

3 stops21h 12m

$653

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 4/7

11:45 am-3:20 pm

2 stops17h 35m

Helsinki-Vantaa

Tue 4/14

11:15 am-7:00 pm

2 stops17h 45m

$654

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 1/21

2:35 pm-12:55 pm

1 stop12h 20m

Helsinki-Vantaa

Sat 2/7

1:55 pm-5:00 pm

1 stop13h 05m

$655

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Helsinki from

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

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 Monday when prices can be found for as low as $910. 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 Tuesday will generally be more expensive and average around $1,133. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Helsinki is in the morning. momondo users have found flights departing from Seattle to Helsinki in the morning for as low as $788. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Helsinki, so prices are often more expensive at around $953 per ticket.

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 $811 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 $597 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?

You could potentially save up to 29% 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 December 2025, prices for Seattle to Helsinki flights are approximately 22% 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

$1,097

Fastest flight time

12h 20m

Direct flights

None
The best one-way flight to Helsinki from Seattle in the past 72 hours is $1,097. The best round-trip flight deal from Seattle to Helsinki found on momondo in the last 72 hours is $597.
The fastest flight from Seattle to Helsinki takes 12h 20m
There are no direct flights from Seattle to Helsinki. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Helsinki-Vantaa Airport.
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 12h 20m, 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?

  • 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?

  • What is the most popular airline from Seattle to Helsinki?

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 AirlinesPriceFrom $322Free CancellationRating
7.4
1,618 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $424Free CancellationRating
7.0
592 reviews
Search Icelandair flights
KLMPriceFrom $536Free CancellationRating
7.7
1,428 reviews
Search KLM flights
American AirlinesPriceFrom $601Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
FinnairPriceFrom $657Free CancellationRating
7.6
1,339 reviews
Search Finnair flights
British AirwaysPriceFrom $725Free CancellationRating
6.7
7,597 reviews
Search British Airways flights

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
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.

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