Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Helsinki from $313

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 9/1. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Seattle to Helsinki

Cheap round-trip flights

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
$393Scandinavian Airlines
Find Deal
Wed, Aug 27 - Sun, Sep 7
Scandinavian Airlines Logo
4:00 pm - 11:35 pmSEA-HEL
45h 35m2 stops
Scandinavian Airlines Logo
4:05 pm - 1:50 pmHEL-SEA
31h 45m1 stop
$398Scandinavian Airlines
Find Deal
Wed, Aug 27 - Sun, Sep 7
American Airlines Logo
6:15 am - 3:20 pmSEA-HEL
23h 05m1 stop
American Airlines Logo
4:00 pm - 10:31 pmHEL-SEA
16h 31m1 stop
$690American Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 9
Lufthansa Logo
2:20 pm - 4:40 pmSEA-HEL
16h 20m1 stop
Lufthansa Logo
6:10 am - 11:55 amHEL-SEA
15h 45m1 stop
$732Lufthansa
Find Deal
Mon, Jul 21 - Wed, Aug 27
Lufthansa Logo
2:20 pm - 4:40 pmSEA-HEL
16h 20m1 stop
Lufthansa Logo
6:10 am - 8:42 pmHEL-SEA
24h 32m2 stops
$743Lufthansa
Find Deal
Sun, Jul 20 - Wed, Aug 27
Icelandair Logo
11:30 pm - 10:00 amSEA-HEL
24h 30m2 stops
Icelandair Logo
6:00 pm - 5:50 pmHEL-SEA
33h 50m2 stops
$783Icelandair
Find Deal
Sun, Aug 3 - Tue, Aug 12
Icelandair Logo
3:45 pm - 2:00 pmSEA-HEL
12h 15m1 stop
Icelandair Logo
3:00 pm - 5:50 pmHEL-SEA
12h 50m1 stop
$790Icelandair
Find Deal
Mon, Aug 4 - Wed, Aug 20
American Airlines Logo
1:33 am - 10:45 amSEA-HEL
23h 12m1 stop
American Airlines Logo
7:50 am - 4:55 pmHEL-SEA
19h 05m1 stop
$838American Airlines
Find Deal
Sat, Nov 15 - Fri, Nov 28
Finnair Logo
5:40 pm - 1:10 pmSEA-HEL
9h 30mnonstop
Finnair Logo
4:20 pm - 4:00 pmHEL-SEA
9h 40mnonstop
$888Finnair
Find Deal
Mon, Aug 4 - Wed, Aug 20
Finnair Logo
5:40 pm - 1:10 pmSEA-HEL
9h 30mnonstop
Finnair Logo
4:20 pm - 4:00 pmHEL-SEA
9h 40mnonstop
$889Finnair
Find Deal
Mon, Aug 4 - Wed, Aug 20

Turkish Airlines flights from Seattle to Helsinki

Our best Turkish Airlines deals on Seattle to Helsinki flight tickets
Turkish Airlines
Jul 9
SEA7:10 pmSeattle/Tacoma Intl
37h 30m
1 stop
HEL6:40 pmHelsinki-Vantaa
Jul 16
HEL12:35 pmHelsinki-Vantaa
32h 00m
1 stop
SEA10:35 amSeattle/Tacoma Intl
Turkish Airlines
Jul 7
SEA7:10 pmSeattle/Tacoma Intl
37h 30m
1 stop
HEL6:40 pmHelsinki-Vantaa
Jul 14
HEL7:35 pmHelsinki-Vantaa
31h 40m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
Turkish Airlines
Sep 20
SEA7:10 pmSeattle/Tacoma Intl
30h 30m
1 stop
HEL11:40 amHelsinki-Vantaa
Oct 2
HEL7:35 pmHelsinki-Vantaa
31h 40m
1 stop
SEA5:15 pmSeattle/Tacoma Intl

United Airlines flights from Seattle to Helsinki

Our best United Airlines deals on Seattle to Helsinki flight tickets
United Airlines
Nov 25
SEA7:00 amSeattle/Tacoma Intl
25h 40m
2 stops
HEL6:40 pmHelsinki-Vantaa
Dec 9
HEL7:05 amHelsinki-Vantaa
15h 05m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
United Airlines
Aug 5
SEA7:10 amSeattle/Tacoma Intl
23h 40m
3 stops
HEL4:50 pmHelsinki-Vantaa
Aug 13
HEL6:10 amHelsinki-Vantaa
18h 06m
2 stops
SEA2:16 pmSeattle/Tacoma Intl
United Airlines
Aug 3
SEA2:55 pmSeattle/Tacoma Intl
35h 55m
2 stops
HEL12:50 pmHelsinki-Vantaa
Aug 12
HEL1:35 pmHelsinki-Vantaa
32h 20m
1 stop
SEA11:55 amSeattle/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 Tuesday will generally be more expensive and average around $1,381. 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 $1,019 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 13 weeks ahead of your departure date. In general, you can expect to find flights to Helsinki for around $861 when searching 13 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 $598 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 43% 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 6% 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

$313

Fastest flight time

9h 30m

Direct flights

Mon, 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 $313. The best round-trip flight deal from Seattle to Helsinki found on momondo in the last 72 hours is $393.
The fastest flight from Seattle to Helsinki takes 9h 30m
Direct flights go from Seattle to Helsinki on Monday, 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 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?

  • 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 $415Free CancellationRating
7.3
1,387 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $431Free CancellationRating
7.0
499 reviews
Search Icelandair flights
LufthansaPriceFrom $549Free CancellationRating
6.7
7,136 reviews
Search Lufthansa flights
FinnairPriceFrom $559Free CancellationRating
7.6
1,290 reviews
Search Finnair flights
British AirwaysPriceFrom $569Free CancellationRating
6.6
7,008 reviews
Search British Airways flights
United AirlinesPriceFrom $583Free CancellationRating
7.4
8,790 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 3 Finnair flights from Seattle to Helsinki this week, the average price was $998, with the best Finnair deals starting from $559 round-trip. 1,290 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 3 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
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.


An easier way to manage your Helsinki trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/17
Tue 6/24

Find better results for your trip to Finland