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Cheap flights from Helsinki to Seattle from $444

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 9/28. 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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Find the cheapest flights from Helsinki to Seattle

Cheap round-trip flights

Logo
7:05 am - 5:50 pmHEL-SEA
20h 45m2 stops
Logo
7:00 pm - 11:05 pmSEA-HEL
18h 05m2 stops
$511
Find Deal
Thu, Sep 11 - Thu, Sep 18
Logo
8:30 am - 5:50 pmHEL-SEA
19h 20m2 stops
Logo
3:45 pm - 11:05 pmSEA-HEL
21h 20m2 stops
$514
Find Deal
Wed, Aug 27 - Wed, Sep 3
Turkish Airlines Logo
12:35 pm - 5:15 pmHEL-SEA
38h 40m1 stop
Turkish Airlines Logo
8:00 pm - 6:05 pmSEA-HEL
37h 05m1 stop
$766Turkish Airlines
Find Deal
Sat, Oct 18 - Sat, Nov 1
Turkish Airlines Logo
12:35 pm - 5:15 pmHEL-SEA
38h 40m1 stop
Turkish Airlines Logo
8:00 pm - 6:05 pmSEA-HEL
37h 05m1 stop
$767Turkish Airlines
Find Deal
Sat, Oct 18 - Sat, Nov 1
Icelandair Logo
3:00 pm - 8:40 pmHEL-SEA
15h 40m1 stop
Icelandair Logo
3:45 pm - 2:00 pmSEA-HEL
12h 15m1 stop
$807Icelandair
Find Deal
Thu, Sep 11 - Thu, Sep 18
Icelandair Logo
3:00 pm - 8:40 pmHEL-SEA
15h 40m1 stop
Icelandair Logo
3:45 pm - 2:00 pmSEA-HEL
12h 15m1 stop
$809Icelandair
Find Deal
Thu, Sep 11 - Thu, Sep 18
Air France Logo
7:00 am - 4:05 pmHEL-SEA
19h 05m1 stop
Air France Logo
7:50 am - 1:00 pmSEA-HEL
19h 10m2 stops
$827Air France
Find Deal
Mon, Sep 15 - Mon, Sep 29
Delta Logo
6:40 am - 4:46 pmHEL-SEA
20h 06m2 stops
Delta Logo
1:30 pm - 4:40 pmSEA-HEL
17h 10m1 stop
$829Delta
Find Deal
Thu, Sep 11 - Thu, Sep 18
Delta Logo
6:40 am - 4:46 pmHEL-SEA
20h 06m2 stops
Delta Logo
1:30 pm - 4:40 pmSEA-HEL
17h 10m1 stop
$834Delta
Find Deal
Thu, Sep 11 - Thu, Sep 18
Air France Logo
7:00 am - 11:45 amHEL-SEA
14h 45m1 stop
Air France Logo
1:30 pm - 11:20 pmSEA-HEL
23h 50m1 stop
$936Air France
Find Deal
Mon, Sep 1 - Sat, Jul 11

Icelandair flights from Helsinki to Seattle

Our best Icelandair deals on Helsinki to Seattle flight tickets
Icelandair
Sep 11
HEL3:00 pmHelsinki-Vantaa
15h 40m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Sep 18
SEA3:45 pmSeattle/Tacoma Intl
12h 15m
1 stop
HEL2:00 pmHelsinki-Vantaa
$807
Find similar
Icelandair
Sep 11
HEL3:00 pmHelsinki-Vantaa
15h 40m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Sep 18
SEA3:45 pmSeattle/Tacoma Intl
12h 15m
1 stop
HEL2:00 pmHelsinki-Vantaa
$809
Find similar
Icelandair
Sep 15
HEL12:00 pmHelsinki-Vantaa
39h 50m
2 stops
SEA5:50 pmSeattle/Tacoma Intl
Sep 29
SEA7:00 pmSeattle/Tacoma Intl
34h 45m
2 stops
HEL3:45 pmHelsinki-Vantaa
$819
Find similar

Delta flights from Helsinki to Seattle

Our best Delta deals on Helsinki to Seattle flight tickets
Delta
Sep 11
HEL6:40 amHelsinki-Vantaa
20h 06m
2 stops
SEA4:46 pmSeattle/Tacoma Intl
Sep 18
SEA1:30 pmSeattle/Tacoma Intl
17h 10m
1 stop
HEL4:40 pmHelsinki-Vantaa
$829
Find similar
Delta
Sep 11
HEL6:40 amHelsinki-Vantaa
20h 06m
2 stops
SEA4:46 pmSeattle/Tacoma Intl
Sep 18
SEA1:30 pmSeattle/Tacoma Intl
17h 10m
1 stop
HEL4:40 pmHelsinki-Vantaa
$834
Find similar
Delta
Aug 27
HEL7:00 amHelsinki-Vantaa
14h 35m
1 stop
SEA11:35 amSeattle/Tacoma Intl
Sep 3
SEA7:10 amSeattle/Tacoma Intl
19h 50m
2 stops
HEL1:00 pmHelsinki-Vantaa
$844
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 July 29, 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

Thu 9/11

7:05 am-5:50 pm

2 stops20h 45m

Seattle/Tacoma Intl

Thu 9/18

7:00 pm-11:05 pm

2 stops18h 05m

$511

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 8/27

8:30 am-5:50 pm

2 stops19h 20m

Seattle/Tacoma Intl

Wed 9/3

3:45 pm-11:05 pm

2 stops21h 20m

$514

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 10/18

12:35 pm-5:15 pm

1 stop38h 40m

Seattle/Tacoma Intl

Sat 11/1

8:00 pm-6:05 pm

1 stop37h 05m

$766

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 10/18

12:35 pm-5:15 pm

1 stop38h 40m

Seattle/Tacoma Intl

Sat 11/1

8:00 pm-6:05 pm

1 stop37h 05m

$767

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/11

3:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Thu 9/18

3:45 pm-2:00 pm

1 stop12h 15m

$807

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/11

3:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Thu 9/18

3:45 pm-2:00 pm

1 stop12h 15m

$809

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 9/15

7:00 am-4:05 pm

1 stop19h 05m

Seattle/Tacoma Intl

Mon 9/29

7:50 am-1:00 pm

2 stops19h 10m

$827

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/11

6:40 am-4:46 pm

2 stops20h 06m

Seattle/Tacoma Intl

Thu 9/18

1:30 pm-4:40 pm

1 stop17h 10m

$829

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/11

6:40 am-4:46 pm

2 stops20h 06m

Seattle/Tacoma Intl

Thu 9/18

1:30 pm-4:40 pm

1 stop17h 10m

$834

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 9/1

7:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Sat 7/11

1:30 pm-11:20 pm

1 stop23h 50m

$936

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 January 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 Monday. momondo users have found tickets for Monday departures for as low as $908. 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 $828 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 9% 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 July 2025, prices for Helsinki to Seattle flights are approximately 3% 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

Best Price Found

$444

Fastest flight time

9h 40m

Direct flights

Mon and Tue

Airports in Seattle

1 airport
The best one-way flight to Seattle from Helsinki in the past 72 hours is $444. The best round-trip flight deal from Helsinki to Seattle found on momondo in the last 72 hours is $511.
The fastest flight from Helsinki to Seattle takes 9h 40m
Direct flights go from Helsinki to Seattle on Monday and Tuesday. Airlines offering direct flights are: Finnair, Iberia and British Airways.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • 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 12h 50m 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
521 reviews
Search Icelandair flights
FinnairPriceFrom $595Free CancellationRating
7.6
1,316 reviews
Search Finnair flights

  • Finnair Flights From Helsinki to Seattle

    Finnair operates around 4 flights from Helsinki to Seattle every week. The average price of these flights found in the last 72 hours has been $862, but momondo users have found Finnair deals from Helsinki to Seattle from as low as $595 round-trip. Finnair has been scored 7.6/10 in 1,316 reviews.

Traveling to a place near Seattle?

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

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.

An easier way to manage your Seattle trip

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