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Cheap flights from Helsinki to Seattle from $412

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helsinki to Seattle departing on 12/14. 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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Cheap round-trip flights

Turkish Airlines Logo
7:35 pm - 6:05 pmHEL-SEA
32h 30m1 stop
Turkish Airlines Logo
8:00 pm - 6:05 pmSEA-HEL
37h 05m1 stop
$771Turkish Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Turkish Airlines Logo
7:35 pm - 10:35 amHEL-SEA
25h 00m1 stop
Turkish Airlines Logo
12:30 pm - 6:40 pmSEA-HEL
20h 10m1 stop
$775Turkish Airlines
Find Deal
Fri, Sep 26 - Thu, Oct 9
Turkish Airlines Logo
7:35 pm - 10:35 amHEL-SEA
25h 00m1 stop
Turkish Airlines Logo
12:30 pm - 6:40 pmSEA-HEL
20h 10m1 stop
$783Turkish Airlines
Find Deal
Fri, Sep 26 - Thu, Oct 9
Icelandair Logo
3:00 pm - 8:40 pmHEL-SEA
15h 40m1 stop
Icelandair Logo
3:35 pm - 12:55 pmSEA-HEL
12h 20m1 stop
$808Icelandair
Find Deal
Sat, Oct 18 - Sat, Nov 1
Logo
7:45 am - 4:40 pmHEL-SEA
17h 55m1 stop
Logo
5:40 pm - 10:50 pmSEA-HEL
19h 10m1 stop
$812
Find Deal
Sat, Nov 1 - Sat, Nov 15
Icelandair Logo
4:05 pm - 5:00 pmHEL-SEA
34h 55m2 stops
Icelandair Logo
2:35 pm - 3:15 pmSEA-HEL
14h 40m2 stops
$818Icelandair
Find Deal
Sun, Dec 14 - Fri, Jan 9
Logo
7:35 am - 2:20 pmHEL-SEA
40h 45m2 stops
Logo
6:00 pm - 10:45 amSEA-HEL
30h 45m1 stop
$824
Find Deal
Sat, Dec 13 - Sat, Jan 10
Delta Logo
7:00 am - 4:05 pmHEL-SEA
19h 05m1 stop
Delta Logo
7:25 am - 1:00 pmSEA-HEL
19h 35m2 stops
$852Delta
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Fri, Sep 26 - Thu, Oct 9
Air France Logo
2:05 pm - 11:50 amHEL-SEA
31h 45m1 stop
Air France Logo
7:20 am - 1:10 pmSEA-HEL
19h 50m2 stops
$862Air France
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Sat, Dec 13 - Fri, Jan 9
Delta Logo
7:00 am - 10:29 amHEL-SEA
37h 29m2 stops
Delta Logo
1:40 pm - 4:25 pmSEA-HEL
16h 45m1 stop
$872Delta
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Fri, Nov 7 - Tue, Nov 11

Turkish Airlines flights from Helsinki to Seattle

Our best Turkish Airlines deals on Helsinki to Seattle flight tickets
Turkish Airlines
Oct 25
HEL7:35 pmHelsinki-Vantaa
32h 30m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
Nov 1
SEA8:00 pmSeattle/Tacoma Intl
37h 05m
1 stop
HEL6:05 pmHelsinki-Vantaa
$771
Find similar
Turkish Airlines
Sep 26
HEL7:35 pmHelsinki-Vantaa
25h 00m
1 stop
SEA10:35 amSeattle/Tacoma Intl
Oct 9
SEA12:30 pmSeattle/Tacoma Intl
20h 10m
1 stop
HEL6:40 pmHelsinki-Vantaa
$775
Find similar
Turkish Airlines
Sep 26
HEL7:35 pmHelsinki-Vantaa
25h 00m
1 stop
SEA10:35 amSeattle/Tacoma Intl
Oct 9
SEA12:30 pmSeattle/Tacoma Intl
20h 10m
1 stop
HEL6:40 pmHelsinki-Vantaa
$783
Find similar

United Airlines flights from Helsinki to Seattle

Our best United Airlines deals on Helsinki to Seattle flight tickets
United Airlines
Oct 25
HEL6:10 amHelsinki-Vantaa
24h 34m
2 stops
SEA8:44 pmSeattle/Tacoma Intl
Nov 1
SEA11:59 pmSeattle/Tacoma Intl
33h 51m
2 stops
HEL6:50 pmHelsinki-Vantaa
$945
Find similar
United Airlines
Dec 13
HEL6:55 amHelsinki-Vantaa
24h 05m
2 stops
SEA9:00 pmSeattle/Tacoma Intl
Jan 10
SEA5:00 amSeattle/Tacoma Intl
27h 50m
3 stops
HEL6:50 pmHelsinki-Vantaa
$946
Find similar
United Airlines
Jan 7
HEL1:55 pmHelsinki-Vantaa
32h 15m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
Jun 18
SEA2:20 pmSeattle/Tacoma Intl
16h 10m
1 stop
HEL4:30 pmHelsinki-Vantaa
$964
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Helsinki to Seattle 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 September 11, 2025.
Use the filters below to find and compare flights from Helsinki to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 10/25

7:35 pm-6:05 pm

1 stop32h 30m

Seattle/Tacoma Intl

Sat 11/1

8:00 pm-6:05 pm

1 stop37h 05m

$771

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 9/26

7:35 pm-10:35 am

1 stop25h 00m

Seattle/Tacoma Intl

Thu 10/9

12:30 pm-6:40 pm

1 stop20h 10m

$775

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 9/26

7:35 pm-10:35 am

1 stop25h 00m

Seattle/Tacoma Intl

Thu 10/9

12:30 pm-6:40 pm

1 stop20h 10m

$783

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 10/18

3:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Sat 11/1

3:35 pm-12:55 pm

1 stop12h 20m

$808

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 11/1

7:45 am-4:40 pm

1 stop17h 55m

Seattle/Tacoma Intl

Sat 11/15

5:40 pm-10:50 pm

1 stop19h 10m

$812

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 12/14

4:05 pm-5:00 pm

2 stops34h 55m

Seattle/Tacoma Intl

Fri 1/9

2:35 pm-3:15 pm

2 stops14h 40m

$818

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 12/13

7:35 am-2:20 pm

2 stops40h 45m

Seattle/Tacoma Intl

Sat 1/10

6:00 pm-10:45 am

1 stop30h 45m

$824

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 9/26

7:00 am-4:05 pm

1 stop19h 05m

Seattle/Tacoma Intl

Thu 10/9

7:25 am-1:00 pm

2 stops19h 35m

$852

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 12/13

2:05 pm-11:50 am

1 stop31h 45m

Seattle/Tacoma Intl

Fri 1/9

7:20 am-1:10 pm

2 stops19h 50m

$862

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 11/7

7:00 am-10:29 am

2 stops37h 29m

Seattle/Tacoma Intl

Tue 11/11

1:40 pm-4:25 pm

1 stop16h 45m

$872

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 Seattle from

How to get the cheapest flight ticket from Helsinki to Seattle

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 Seattle?

In general, March is the cheapest month to fly from Helsinki to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $733. If you don’t want to visit Seattle in March, then you should wait until April to fly from Helsinki, when ticket prices are also cheap, with an average price of $764.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Helsinki is on a Thursday. momondo users have found tickets for Thursday departures for as low as $862. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Helsinki because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,051.

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

Flying to Seattle from Helsinki at noon is the least expensive time of day to depart. momondo users have found prices as low as $761 when looking at flights departing at noon. Flights to Seattle are more costly in the afternoon, with an average ticket price of $948. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Helsinki-Vantaa to Seattle/Tacoma Intl flight route?

Fly from Helsinki-Vantaa to Seattle/Tacoma Intl for the best Helsinki-Vantaa - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Helsinki when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $843 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Helsinki for as low as $741 on momondo.

What cabin class options are available on Helsinki-Vantaa to Seattle/Tacoma Intl flights?

There are 3 cabin classes available to choose from on Helsinki-Vantaa to Seattle/Tacoma Intl 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 Helsinki to Seattle flights?

You could potentially save up to 21% on your flight if you consider stops on a Helsinki to Seattle flight.

How have Helsinki to Seattle flight prices changed over time?

As of September 2025, prices for Helsinki to Seattle flights are approximately 33% more expensive when compared to flights at the same time last year.

When to book flights from Helsinki to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Helsinki to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Helsinki to Seattle (HEL to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helsinki to Seattle

Direct flights

None
There are no direct flights from Helsinki to Seattle. There are no popular flight routes from Helsinki to Seattle.
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  • How far is Helsinki-Vantaa to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 4763.3 mi away from Helsinki-Vantaa. Typically, this will take 13h 05m by plane in normal conditions.

  • When did momondo last update prices for flights from Helsinki-Vantaa Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Helsinki-Vantaa Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Helsinki-Vantaa Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Helsinki-Vantaa Airport to Seattle/Tacoma Intl 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 Helsinki-Vantaa Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Helsinki to Seattle?

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

Best airlines flying from Helsinki to Seattle

Compare and see reviews for airlines that fly from Helsinki to Seattle with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $504Free CancellationRating
7.0
546 reviews
Search Icelandair flights
FinnairPriceFrom $595Free CancellationRating
7.6
1,323 reviews
Search Finnair flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Puyallup
Marysville
Federal Way
Kirkland
Lakewood
Tukwila
Centralia
Shoreline
Fife
Cle Elum
Redmond
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Helsinki to Seattle?

Finding the right flight to Seattle from Helsinki is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Helsinki to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Helsinki which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Helsinki to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Helsinki. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Helsinki to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Helsinki are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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