$271+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
May 18 — May 251
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday
Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.
This Mytrip deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
- HEL
2 stops15h 00m
Multiple Airlines
Tue 5/57:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$601
This oojo deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 pm
SEA
- HEL
2 stops38h 45m
Icelandair
Thu 9/2412:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 4/14![Icelandair logo]()
$797
This oojo deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 4/287:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$798
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Wed 5/1312:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$815
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Tue 10/208:20 am
HEL
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$816
This oojo deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:40 pm
SEA
- HEL
2 stops17h 00m
Icelandair
Mon 9/711:40 am
HEL
- SEA
2 stops34h 05m
Icelandair
Deal found 4/15![Icelandair logo]()
$824
This oojo deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:40 pm
SEA
- HEL
2 stops17h 00m
Icelandair
Tue 9/1512:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 4/14![Icelandair logo]()
$825
This oojo deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:10 pm
SEA
- HEL
1 stop37h 30m
Turkish Airlines
Tue 9/157:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/16![Turkish Airlines logo]()
$828
This oojo deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 pm
SEA
- HEL
1 stop30h 35m
Turkish Airlines
Tue 11/177:00 pm
HEL
- SEA
1 stop32h 05m
Turkish Airlines
Deal found 4/16![Turkish Airlines logo]()
$829
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:10 pm
SEA
- HEL
1 stop37h 30m
Turkish Airlines
Tue 5/57:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$831
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
This Turkish Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:10 pm
SEA
- HEL
1 stop37h 30m
Turkish Airlines
Wed 9/2312:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$926
This Icelandair deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Mon 11/23:50 pm
HEL
- SEA
2 stops35h 10m
Icelandair
Deal found 4/13![Icelandair logo]()
$941
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:00 am
SEA
- HEL
2 stops21h 55m
United Airlines
Fri 10/306:50 am
HEL
- SEA
1 stop16h 30m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,030
This Lufthansa deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:15 pm
SEA
- HEL
2 stops18h 40m
Lufthansa
Fri 10/306:55 am
HEL
- SEA
1 stop15h 15m
Lufthansa
Deal found 4/13![Lufthansa logo]()
$1,078
This KLM deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/61:30 pm
SEA
- HEL
1 stop17h 10m
Multiple Airlines
Wed 8/191:55 pm
HEL
- SEA
1 stop31h 42m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,146
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:35 pm
SEA
- HEL
1 stop36h 05m
Delta
Thu 7/237:00 am
HEL
- SEA
1 stop19h 20m
Delta
Deal found 4/17![Delta logo]()
$1,148
This Icelandair deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Wed 10/2811:10 am
HEL
- SEA
2 stops15h 50m
Icelandair
Deal found 4/13![Icelandair logo]()
$952
This Icelandair deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:40 pm
SEA
- HEL
2 stops17h 00m
Icelandair
Wed 9/2312:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 4/13![Icelandair logo]()
$955
This Icelandair deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:40 pm
SEA
- HEL
2 stops18h 00m
Icelandair
Tue 9/2912:30 pm
HEL
- SEA
2 stops15h 25m
Icelandair
Deal found 4/17![Icelandair logo]()
$956
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated April 18, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 4/287:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$798
This Mytrip deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
- HEL
2 stops15h 00m
Multiple Airlines
Tue 5/57:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$601
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:10 pm
SEA
- HEL
1 stop37h 30m
Turkish Airlines
Tue 5/57:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$831
This oojo deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:10 pm
SEA
- HEL
1 stop37h 30m
Turkish Airlines
Sun 5/1012:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$856
This FlightHub deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Tue 5/128:20 am
HEL
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$854
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 9/1512:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 4/17![Turkish Airlines logo]()
$833
This oojo deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Mon 5/1112:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$837
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/43:40 pm
SEA
- HEL
2 stops19h 40m
Multiple Airlines
Mon 5/113:40 pm
HEL
- SEA
2 stops35h 35m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$852
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Wed 5/1312:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$815
This FlightHub deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Tue 5/267:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$851
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Mytrip deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:00 pm
SEA
- HEL
2 stops16h 20m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$271
This Trip.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 pm
SEA
- HEL
2 stops15h 35m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$295
This Trip.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:00 pm
SEA
- HEL
2 stops27h 55m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:40 pm
SEA
- HEL
2 stops31h 45m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:25 pm
SEA
- HEL
2 stops47h 55m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2811:25 pm
SEA
- HEL
2 stops40h 05m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/172:30 pm
SEA
- HEL
3 stops24h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$417
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $601 (Mytrip) |
One-way from | $271 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $909 |
Good round-trip deal | $1,112 or less |
Good one-way deal | $407 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki 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, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sat 9/19
7:10 pm-6:40 pm
1 stop37h 30m
Helsinki-Vantaa
Wed 9/23
12:05 pm-5:15 pm
1 stop39h 10m
$926
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 9/28
3:40 pm-7:45 pm
2 stops18h 05m
Helsinki-Vantaa
Mon 11/2
3:50 pm-5:00 pm
2 stops35h 10m
$941
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 9/28
3:40 pm-7:45 pm
2 stops18h 05m
Helsinki-Vantaa
Wed 10/28
11:10 am-6:00 pm
2 stops15h 50m
$952
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sat 9/19
3:40 pm-6:40 pm
2 stops17h 00m
Helsinki-Vantaa
Wed 9/23
12:30 pm-8:40 pm
2 stops18h 10m
$955
Quickest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 9/25
3:40 pm-7:40 pm
2 stops18h 00m
Helsinki-Vantaa
Tue 9/29
12:30 pm-5:55 pm
2 stops15h 25m
$956
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 9/29
11:00 am-6:55 pm
2 stops21h 55m
Helsinki-Vantaa
Fri 10/30
6:50 am-2:20 pm
1 stop16h 30m
$1,030
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 10/2
2:15 pm-6:55 pm
2 stops18h 40m
Helsinki-Vantaa
Fri 10/30
6:55 am-1:10 pm
1 stop15h 15m
$1,078
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 7/6
1:30 pm-4:40 pm
1 stop17h 10m
Helsinki-Vantaa
Wed 8/19
1:55 pm-11:37 am
1 stop31h 42m
$1,146
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Wed 7/15
6:35 pm-4:40 pm
1 stop36h 05m
Helsinki-Vantaa
Thu 7/23
7:00 am-4:20 pm
1 stop19h 20m
$1,148
Cheapest one-way
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 9/28
7:00 pm-8:35 pm
2 stops15h 35m
$295
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Helsinki. Price data was last updated on April 10, 2026.
The best time to book flights from Seattle to Helsinki is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 $539). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). 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.
How much does it cost to fly round-trip from Seattle to Helsinki?
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated April 18, 2026.
Get a feel of what it's like to fly with Finnair,Scandinavian Airlines, andAmerican Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.4
Food
6.7
Entertainment
6.9
Boarding
7.7
Crew
8.2
Overall
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Comfort
7.4
Food
6.7
Entertainment
6.9
Boarding
7.7
Crew
8.2
Overall
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Comfort
7.4
Food
6.7
Entertainment
6.9
Boarding
7.7
Crew
8.2
Overall
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Comfort
7.4
Food
6.7
Entertainment
6.9
Boarding
7.7
Crew
8.2
Overall
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Comfort
7.4
Food
6.7
Entertainment
6.9
Boarding
7.7
Crew
8.2
Overall
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Comfort
7.4
Food
6.7
Entertainment
6.9
Boarding
7.7
Crew
8.2
Overall
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Related info for your journey
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Top 6 airlines flying from Seattle to Helsinki
Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$548 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$424 | Average$815 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$496 | Average$1,060 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$536 | Average$910 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$696 | Average$1,084 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$725 | Average$1,148 | FlexibilityNo cancel fee | On-time70% |