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Cheap flights from Seattle to Helsinki from $238

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 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Scandinavian Airlines Logo
4:00 pm - 10:35 amSEA-HEL
32h 35m1 stop
Scandinavian Airlines Logo
9:05 pm - 1:50 pmHEL-SEA
50h 45m2 stops
$311Scandinavian Airlines
Find Deal
Wed, Aug 20 - Mon, Aug 25
Scandinavian Airlines Logo
4:00 pm - 11:35 pmSEA-HEL
45h 35m2 stops
Scandinavian Airlines Logo
9:05 pm - 1:50 pmHEL-SEA
50h 45m2 stops
$350Scandinavian Airlines
Find Deal
Wed, Aug 20 - Mon, Aug 25
Scandinavian Airlines Logo
4:00 pm - 11:35 pmSEA-HEL
21h 35m2 stops
Scandinavian Airlines Logo
1:20 pm - 1:50 pmHEL-SEA
34h 30m2 stops
$361Scandinavian Airlines
Find Deal
Sun, Aug 24 - Thu, Sep 4
Icelandair Logo
3:50 pm - 12:55 pmSEA-HEL
12h 05m1 stop
Icelandair Logo
1:55 pm - 6:00 pmHEL-SEA
13h 05m1 stop
$368Icelandair
Find Deal
Sun, Oct 26 - Fri, Oct 31
Icelandair Logo
7:00 pm - 2:00 pmSEA-HEL
33h 00m1 stop
Icelandair Logo
3:00 pm - 5:50 pmHEL-SEA
12h 50m1 stop
$370Icelandair
Find Deal
Mon, Oct 13 - Thu, Oct 23
Icelandair Logo
7:00 pm - 2:00 pmSEA-HEL
33h 00m1 stop
Icelandair Logo
1:55 pm - 6:00 pmHEL-SEA
13h 05m1 stop
$393Icelandair
Find Deal
Wed, Oct 22 - Mon, Oct 27
Scandinavian Airlines Logo
4:00 pm - 11:35 pmSEA-HEL
21h 35m2 stops
Scandinavian Airlines Logo
9:00 pm - 1:50 pmHEL-SEA
26h 50m1 stop
$394Scandinavian Airlines
Find Deal
Sun, Aug 24 - Thu, Sep 4
Scandinavian Airlines Logo
4:00 pm - 10:35 amSEA-HEL
32h 35m1 stop
Scandinavian Airlines Logo
4:05 pm - 1:50 pmHEL-SEA
31h 45m1 stop
$395Scandinavian Airlines
Find Deal
Mon, Aug 25 - Fri, Sep 5
 Logo
7:00 pm - 8:00 pmSEA-HEL
15h 00m2 stops
 Logo
5:35 am - 5:50 pmHEL-SEA
22h 15m3 stops
Wed, Aug 13 - Wed, Aug 20
Turkish Airlines Logo
7:10 pm - 6:40 pmSEA-HEL
37h 30m1 stop
Turkish Airlines Logo
12:35 pm - 5:15 pmHEL-SEA
38h 40m1 stop
$619Turkish Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 10

Scandinavian Airlines flights from Seattle to Helsinki

Our best Scandinavian Airlines deals on Seattle to Helsinki flight tickets
Scandinavian Airlines
Aug 20
SEA4:00 pmSeattle/Tacoma Intl
32h 35m
1 stop
HEL10:35 amHelsinki-Vantaa
Aug 25
HEL9:05 pmHelsinki-Vantaa
50h 45m
2 stops
SEA1:50 pmSeattle/Tacoma Intl
Scandinavian Airlines
Aug 20
SEA4:00 pmSeattle/Tacoma Intl
45h 35m
2 stops
HEL11:35 pmHelsinki-Vantaa
Aug 25
HEL9:05 pmHelsinki-Vantaa
50h 45m
2 stops
SEA1:50 pmSeattle/Tacoma Intl
Scandinavian Airlines
Aug 24
SEA4:00 pmSeattle/Tacoma Intl
21h 35m
2 stops
HEL11:35 pmHelsinki-Vantaa
Sep 4
HEL1:20 pmHelsinki-Vantaa
34h 30m
2 stops
SEA1:50 pmSeattle/Tacoma Intl

Icelandair flights from Seattle to Helsinki

Our best Icelandair deals on Seattle to Helsinki flight tickets
Icelandair
Oct 26
SEA3:50 pmSeattle/Tacoma Intl
12h 05m
1 stop
HEL12:55 pmHelsinki-Vantaa
Oct 31
HEL1:55 pmHelsinki-Vantaa
13h 05m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
Icelandair
Oct 13
SEA7:00 pmSeattle/Tacoma Intl
33h 00m
1 stop
HEL2:00 pmHelsinki-Vantaa
Oct 23
HEL3:00 pmHelsinki-Vantaa
12h 50m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Icelandair
Oct 22
SEA7:00 pmSeattle/Tacoma Intl
33h 00m
1 stop
HEL2:00 pmHelsinki-Vantaa
Oct 27
HEL1:55 pmHelsinki-Vantaa
13h 05m
1 stop
SEA6:00 pmSeattle/Tacoma Intl

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 $539. If you aren’t able to travel during the month of January, then book flights to Helsinki from Seattle during November instead. Flights to Helsinki in November, while not as cheap as those in January, still average around $605.

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 Sunday 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 Friday will generally be more expensive and average around $1,156. 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 $1,002 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 $858 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 $641 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 59% 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 June 2025, prices for Seattle to Helsinki flights are approximately 1% 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

$238

Fastest flight time

9h 30m

Direct flights

Tue, Thu, Fri and Sun

Airports in Helsinki

1 airport
The best one-way flight to Helsinki from Seattle in the past 72 hours is $238. The best round-trip flight deal from Seattle to Helsinki found on momondo in the last 72 hours is $311.
The fastest flight from Seattle to Helsinki takes 9h 30m
Direct flights go from Seattle to Helsinki on Tuesday, Thursday, Friday and Sunday. Airlines offering direct flights are: Finnair, Iberia and American Airlines.
There is 1 airport near Helsinki: Helsinki-Vantaa (HEL)

  • 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 05m, 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 $394Free CancellationRating
7.3
1,413 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $428Free CancellationRating
7.0
513 reviews
Search Icelandair flights
LufthansaPriceFrom $549Free CancellationRating
6.8
7,200 reviews
Search Lufthansa flights
FinnairPriceFrom $559Free CancellationRating
7.6
1,299 reviews
Search Finnair flights
British AirwaysPriceFrom $569Free CancellationRating
6.6
7,081 reviews
Search British Airways flights
United AirlinesPriceFrom $583Free CancellationRating
7.4
8,852 reviews
Search United Airlines flights
American AirlinesPriceFrom $601Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Finnair Flights From Seattle to Helsinki

    Across 5 Finnair flights from Seattle to Helsinki this week, the average price was $998, with the best Finnair deals starting from $559 round-trip. 1,299 users have rated Finnair on momondo, with an average score of 7.6/10.

  • American Airlines Flights From Seattle to Helsinki

    $601 is the best American Airlines flight deal from Seattle to Helsinki found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to $1,093, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 10,000 user reviews) flies into Helsinki from Seattle 5 times in an average week so prices can vary.


Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Espoo
Kotka
Lahti

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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1 adult
Sat 7/5
Sat 7/12

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