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Cheap flights from Seattle to Helsinki from C$ 817

SEA — HEL
18 Oct — 25 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Helsinki

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Helsinki

Sun 11/103:40 p.m. -
1 stop21h 20m
Thu 15/103:00 p.m. -
1 stop12h 55m
Deal found 17/9C$ 1,025
Sun 27/93:55 p.m. -
2 stops21h 55m
Sat 10/107:15 p.m. -
2 stops28h 30m
Deal found 15/9C$ 1,111
Sun 4/103:55 p.m. -
1 stop32h 40m
Wed 21/107:15 a.m. -
3 stops22h 49m
Deal found 14/9C$ 1,133
Wed 30/127:15 a.m. -
2 stops22h 10m
Fri 22/16:15 a.m. -
2 stops26h 11m
Deal found 17/9C$ 1,158
Sun 8/117:15 a.m. -
2 stops22h 10m
Mon 16/116:15 a.m. -
2 stops27h 44m
Deal found 16/9C$ 1,186
Wed 7/1010:51 a.m. -
2 stops18h 29m
Wed 14/107:15 a.m. -
3 stops22h 49m
Deal found 14/9C$ 1,210
Tue 17/117:27 a.m. -
2 stops32h 08m
Sun 22/116:15 a.m. -
2 stops27h 42m
Deal found 14/9C$ 1,211
Sun 8/112:50 p.m. -
1 stop17h 55m
Mon 16/1112:35 p.m. -
2 stops39h 47m
Deal found 16/9C$ 1,231
Tue 10/117:05 p.m. -
1 stop37h 05m
Tue 17/117:05 p.m. -
1 stop32h 05m
Deal found 13/9C$ 1,235

Find flight deals from Seattle to Helsinki

Round-trip from

C$ 1,025

One-way from

C$ 817

Popular in

June

Cheapest in

January

Average price

C$ 1,039
Icelandair
  • Icelandair
  • 11/10-15/10
  • 2 total stops
  • 34h 15m total
  • Seattle to Helsinki
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Turkish Airlines
  • Turkish Airlines
  • 31/1-31/12
  • 1 total stop
  • 30h 15m total
  • Seattle to Helsinki
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 368 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Sun 31/1

7:05 p.m.-11:20 a.m.

1 stop30h 15m

Helsinki-Vantaa

Wed 31/12

12:00 a.m.-2:00 p.m.

Nonstop0h 00m

C$ 817
Quickest round-trip

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Thu 24/9

1:30 p.m.-4:40 p.m.

1 stop17h 10m

Helsinki-Vantaa

Wed 31/12

12:00 a.m.-2:00 p.m.

Nonstop0h 00m

C$ 886

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Sun 11/10

3:40 p.m.-11:00 p.m.

1 stop21h 20m

Helsinki-Vantaa

Thu 15/10

3:00 p.m.-5:55 p.m.

1 stop12h 55m

C$ 1,025

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Wed 7/10

10:51 a.m.-3:20 p.m.

2 stops18h 29m

Helsinki-Vantaa

Wed 14/10

7:15 a.m.-8:04 p.m.

3 stops22h 49m

C$ 1,210

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Sun 8/11

10:39 a.m.-3:25 p.m.

2 stops18h 46m

Helsinki-Vantaa

Mon 16/11

7:00 a.m.-8:13 p.m.

3 stops23h 13m

C$ 1,227

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Sun 8/11

2:50 p.m.-6:45 p.m.

1 stop17h 55m

Helsinki-Vantaa

Mon 16/11

12:35 p.m.-6:22 p.m.

2 stops39h 47m

C$ 1,231

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Mon 9/11

3:13 p.m.-8:20 p.m.

2 stops19h 07m

Helsinki-Vantaa

Mon 16/11

7:00 a.m.-8:13 p.m.

3 stops23h 13m

C$ 1,244

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Sun 11/10

3:55 p.m.-11:50 p.m.

2 stops21h 55m

Helsinki-Vantaa

Thu 15/10

9:05 p.m.-11:13 p.m.

2 stops36h 08m

C$ 1,265

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Tue 10/11

10:12 a.m.-4:40 p.m.

2 stops20h 28m

Helsinki-Vantaa

Tue 17/11

6:40 a.m.-11:47 a.m.

1 stop15h 07m

C$ 1,274

SeattleHelsinki

SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa

SEAHEL

Seattle/Tacoma Intl

Mon 9/11

7:05 p.m.-11:20 a.m.

1 stop30h 15m

Helsinki-Vantaa

Mon 16/11

7:05 p.m.-5:10 p.m.

1 stop32h 05m

C$ 1,291

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/9

Showing 1-10 of 11 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Helsinki

How far ahead should I book a flight from Seattle to Helsinki?

To ensure you get the cheapest price possible for a flight from Seattle to Helsinki, you should look to book at least 13 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Helsinki?

Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of C$ 760). Flying from Seattle to Helsinki in June is currently the most expensive (average of C$ 1,648). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to HEL?

When flying from Seattle to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Helsinki?

Airfare is typical for this route at the moment.

Seattle to Helsinki flights typically cost between C$ 845 and C$ 1,518 in October.
The cheapest round-trip price found within the last 5 days was C$ 1,025 on Icelandair (11 Oct-15 Oct).

Related info for your journey

  • How popular is this Seattle to Helsinki flight route?

    The Seattle/Tacoma Intl to Helsinki-Vantaa flight path was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Helsinki?

    Icelandair and Scandinavian Airlines can get you from Seattle to Helsinki in just under 18h 46m. Your travel time can differ by up to 2h 34m. Airlines will cover a distance of 7667 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from Seattle to Helsinki?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Helsinki on time: Alaska Airlines (17%), Finnair (17%), Iberia (17%).

  • Can I find deals for flights from Seattle to Helsinki that include hotel bookings?

    Yes. In addition to deals on Seattle to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Helsinki.

  • Can I find deals for business class flights from Seattle to Helsinki?

    Yes. Cheapflights offers flight deals from Seattle to Helsinki by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Helsinki?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of C$ 760). Flying from Seattle to Helsinki in June is currently the most expensive (average of C$ 1,648). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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