Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

SEA - HEL

Find cheap flights from Seattle to Helsinki

1 adult
0 bags
Wed 5/6
Wed 12/6

Search hundreds of travel sites at once for deals on flights to Helsinki

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Helsinki, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Helsinki, as well as popular online travel agencies
In the last 7 days, travellers have searched 42,830,901 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights from Seattle to Helsinki - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Helsinki to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Helsinki?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Helsinki, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Helsinki is February, where tickets cost C$ 943 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is C$ 1,890 and C$ 1,687 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Helsinki, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Helsinki, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 51 days before departure.

Which airlines fly direct between Seattle and Helsinki?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to Helsinki.
There is just one airline that flies from Seattle to Helsinki direct and that is Finnair. The best one-way deal found from Finnair for the route is C$ 992.

How many flights are there between Seattle and Helsinki per day?

Each day, there are 3 nonstop flights that take off from Seattle and land in Helsinki, with an average flight time of 9h 15m. The most common departure time is 5:00 p.m. and most flights take off in the afternoon. Each week, there are 9 flights and there are the same amount of flights each day 3.

Which cabin class options are there for flights between Seattle and Helsinki?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

What’s the earliest departure time from Seattle to Helsinki?

Early birds can take the earliest flight from Seattle at 5:40 pm and will be landing in Helsinki at 12:55 pm.

What’s the latest departure time from Seattle to Helsinki?

If you prefer to fly at night, the latest flight from Seattle to Helsinki jets off at 5:40 pm and lands at 12:55 pm.

Good to know

Low season

January

High season

July
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (23% more expensive on average)

When to book flights from Seattle to Helsinki

Are your dates flexible? Find out the best times to travel from Seattle to Helsinki based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Helsinki

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Helsinki?

    United Airlines, and Lufthansa offer inflight Wi-Fi service on the Seattle to Helsinki flight route.

  • Which aircraft models fly most regularly from Seattle to Helsinki?

    The Airbus A350-900 is the aircraft model that flies most regularly on the Seattle to Helsinki flight route.

  • Which airline alliances offer flights from Seattle to Helsinki?

    oneworld is the only airline alliance operating flights between Seattle and Helsinki.

  • On which days can I fly direct from Seattle to Helsinki?

    You can catch a direct flight from Seattle to Helsinki on on Tuesday, Thursday, and Saturday.

  • How does KAYAK find such low prices on flights from Seattle to Helsinki?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Helsinki.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Helsinki?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helsinki from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Helsinki?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Helsinki with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Helsinki?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helsinki from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Seattle to Helsinki

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 1,766 or less round-trip.

Prefer to fly non-stop from Seattle to Helsinki?

Find which airlines fly direct from Seattle/Tacoma Intl to Helsinki-Vantaa, which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to Helsinki-Vantaa

Tuesday

Alaska Airlines, American Airlines, British Airways, +2 more

Alaska Airlines, American Airlines, +3 more

Thursday

Alaska Airlines, American Airlines, British Airways, +2 more

Alaska Airlines, American Airlines, +3 more

Saturday

Alaska Airlines, American Airlines, British Airways, +2 more

Alaska Airlines, American Airlines, +3 more

See more nonstop flights

Nonstop returns

Helsinki-Vantaa to Seattle/Tacoma Intl

Tuesday

Alaska Airlines, American Airlines, British Airways, +2 more

Alaska Airlines, American Airlines, +3 more

Thursday

Alaska Airlines, American Airlines, British Airways, +2 more

Alaska Airlines, American Airlines, +3 more

Saturday

Alaska Airlines, American Airlines, British Airways, +2 more

Alaska Airlines, American Airlines, +3 more

See more nonstop flights
See more nonstop flights

Top airlines flying from Seattle to Helsinki

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Helsinki. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Helsinki? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
FinnairOverall score based on 1379 reviews
7.0Entertainment
6.9Food
7.8Boarding
7.6Comfort
8.2Crew
Airline reviews

All good- I love BA and the professionalism of the crew and pilots.

8.0 ExcellentAnonymous, Apr. 2024JFK - LHR
Read more about Finnair reviews

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Had a nice flight to London on BA will fly with them again in the future

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Very nice flight, easy connections in Keflavík, and friendly crew.

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Book cheap flights from Seattle to Helsinki

One-way flight deals

directAmerican Airlines
9h 15mSEA-HEL
directAlaska Airlines
9h 15mSEA-HEL
directFinnair
9h 15mSEA-HEL
directIberia
9h 15mSEA-HEL
directBritish Airways
9h 15mSEA-HEL

Search by stops

Search by airline

Seattle - Helsinki Flights

Departure:

Seattle (SEA)United States

Destination:

Helsinki (HEL)Finland

Cabin classes:

C$ 5,538
C$ 2,841
C$ 1,612

Browse origins:

  • Flights » 
  • Seattle

Browse destinations:

  • Flights » 
  • Worldwide » 
  • Helsinki