SEA - HEL

$333 Find Cheap Flights from Seattle to Helsinki

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Helsinki departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Helsinki.
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Flights Deals

Cheap Flights from Seattle to Helsinki (SEA-HEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Helsinki that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Helsinki

Mon, Sep 1 - Mon, Sep 8
Scandinavian Airlines Logo
4:00 pm - 8:15 pmSEA-HEL
18h 15m1 stop
Scandinavian Airlines Logo
6:35 am - 1:50 pmHEL-SEA
17h 15m1 stop
$392Scandinavian Airlines
Find Deal
Wed, Oct 8 - Tue, Oct 21
Scandinavian Airlines Logo
4:20 pm - 3:25 pmSEA-HEL
13h 05m1 stop
Scandinavian Airlines Logo
4:05 pm - 2:00 pmHEL-SEA
31h 55m1 stop
$394Scandinavian Airlines
Find Deal
Fri, Nov 14 - Fri, Nov 21
Icelandair Logo
2:35 pm - 1:00 pmSEA-HEL
12h 25m1 stop
Icelandair Logo
2:00 pm - 5:00 pmHEL-SEA
13h 00m1 stop
$646Icelandair
Find Deal
Mon, Dec 8 - Sat, Dec 13
Icelandair Logo
2:35 pm - 1:00 pmSEA-HEL
12h 25m1 stop
Icelandair Logo
2:00 pm - 5:00 pmHEL-SEA
13h 00m1 stop
$669Icelandair
Find Deal
Tue, Nov 25 - Tue, Dec 9
British Airways Logo
11:45 am - 3:15 pmSEA-HEL
17h 30m2 stops
British Airways Logo
12:30 pm - 6:56 pmHEL-SEA
16h 26m1 stop
$705British Airways
Find Deal
Mon, Dec 8 - Mon, Dec 15
Lufthansa Logo
2:00 pm - 4:40 pmSEA-HEL
16h 40m1 stop
Lufthansa Logo
5:55 pm - 12:10 pmHEL-SEA
28h 15m1 stop
$723Lufthansa
Find Deal
Sun, Dec 7 - Mon, Dec 15
Lufthansa Logo
7:00 am - 1:15 amSEA-HEL
32h 15m2 stops
Lufthansa Logo
1:55 pm - 12:10 pmHEL-SEA
32h 15m1 stop
$728Lufthansa
Find Deal
Fri, Nov 28 - Tue, Dec 9
British Airways Logo
1:45 pm - 3:35 pmSEA-HEL
15h 50m2 stops
British Airways Logo
12:30 pm - 11:05 pmHEL-SEA
20h 35m1 stop
$768British Airways
Find Deal
Sat, Nov 15 - Fri, Nov 28
American Airlines Logo
1:33 am - 10:45 amSEA-HEL
23h 12m1 stop
American Airlines Logo
7:50 am - 4:55 pmHEL-SEA
19h 05m1 stop
$838American Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 21
American Airlines Logo
1:33 am - 10:45 amSEA-HEL
23h 12m1 stop
American Airlines Logo
12:30 pm - 9:15 pmHEL-SEA
18h 45m1 stop
$843American Airlines
Find Deal
Expert advice

Expert advice for your flight from Seattle to Helsinki

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Finnair

Finnair's A350 features higher humidity, ensuring a more comfortable arrival.


Economy Comfort offers extra legroom for a small fee, enhancing long-haul comfort.

Read more about Finnairby Gabriel Leigh
American Airlines

Main Cabin Extra offers early boarding and complimentary drinks, ideal for long flights.


Premium Economy includes amenity kits and sleep sets, enhancing comfort on international flights.

Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Useful Info

KAYAK's insights & trends for Seattle to Helsinki flights

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’s the cheapest day of the week to fly from Seattle to Helsinki?

The average price of all round-trip flights from Seattle to Helsinki clicked on KAYAK for each day over the last 12 months.

For Seattle to Helsinki, Sunday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Helsinki back to Seattle, the best deals are generally found on Monday, with Tuesday being the most expensive.

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 round-trip 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 January, where tickets cost $539 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,149 and $1,104 respectively.

Can I save money by flying with a layover from Seattle to Helsinki?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $1,357 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.

To get a below average price on the flight from Seattle to Helsinki, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonApril
High seasonJune
Cheapest flight$333
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Seattle to Helsinki

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

  • What is the cheapest flight from Seattle to Helsinki?

    In the last 3 days, the lowest price for a flight from Seattle to Helsinki was $333 for a one-way ticket and $392 for a round-trip.

  • Do I need a passport to fly between Seattle and Helsinki?

    Yes, you’ll need a passport to travel to Helsinki from Seattle.

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

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

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

    The Airbus A330-300 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 nonstop flight from Seattle to Helsinki on on Monday, Wednesday, Thursday, Saturday, and Sunday.

  • Which is the best airline for flights from Seattle to Helsinki, Finnair or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Helsinki are Finnair and United Airlines. With an average price for the route of $991 and an overall rating of 7.6, Finnair is the most popular choice. United Airlines is also a great choice for the route, with an average price of $966 and an overall rating of 7.4.

  • 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. Booking your flights between Seattle and HEL can sometimes prove cheaper using this method.

  • 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.

KAYAK’s 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 $532 or less one-way and $630 or less round-trip.

Prefer to fly direct from Seattle to Helsinki?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Helsinki-Vantaa.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Helsinki-Vantaa Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Helsinki-Vantaa

Monday

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

Alaska Airlines, American Airlines, +3 more

Wednesday

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

Sunday

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

Alaska Airlines, American Airlines, +3 more

See more direct flights

Direct returns

Helsinki-Vantaa to Seattle/Tacoma Intl

Monday

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

Alaska Airlines, American Airlines, +3 more

Wednesday

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

Sunday

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

Alaska Airlines, American Airlines, +3 more

See more direct flights

Top 5 airlines serving 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.
7.6
FinnairOverall score based on 1291 reviews
8.1Crew
7.4Comfort
6.7Food
7.6Boarding
6.9Entertainment
Airline reviews

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

2.0 MediocreAnonymous, Jun 2025SAN - SEA
Read more Finnair reviews

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

The cabin crew really looked like they wanted to be somewhere else. They weren't really interested in providing an attentive service to full fare paying passengers at all. However the Captiain's in flight announcements were relaxed and very entertaining.

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Food was terrible, all served at once, poor quality . Wine and bread offered only once.

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

I had an exit row and so was Comfortable on the long flight.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Horrible. The flight was delayed by over 3 hours but updates were barely provided. Boarding started 3 hours late then stopped because their system crashed. So now, passengers were standing for 15 minutes in the open waiting to get boarding passes scanned and get on a bus. Duty-free closed around 4-4:30. Only 1 food outlet was open and it was super slow and busy since it was serving passengers from multiple flights. So a number of passengers couldn't buy meals at the terminal. Since the flight was delayed by over 3 hours, we could have been offered snacks on-board. Nothing. The seats barely reclined. In-flight entertainment options were pitiful. Overall, a miserable experience. Never flying on Icelandair ever again. :(

Flight was 1.5 hours late to depart so changed flights to Swiss Air.

The United Airlines crew that operated this flight was subpar. They didn’t

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

At baggage claim, I was given the wrong printed ticket. The ticket belonged to another passenger for a different flight — to Zurich instead of Frankfurt (layover). I was even allowed to pass security, and when I asked the Lufthansa employee if I was on the correct flight, and why it was changed. The employee said everything was correct and I should board. When I got on the plane, there was someone in my seat, and the crew on the plane finally realized that I was on the wrong plane. When I got off the plane, nobody was willing to help, and the security refused to provide my original printed ticket. That was until I showed them that I took a photo of the ticket; once they realized I had photographic evidence, they were suddenly ready to help me. The Lufthansa employee began communicating with other airlines and found a flight that would take me to my destination via Polish Airlines. I was required to once again go through security, re-check my bag, and once again pay for my checked bag and weight overage fees. This experience was incredibly stressful and very frustrating, as you can imagine. A Lufthansa employee told me I would be eligible for a refund. Please tell me what steps I need to take in order to make that happen. Thank you!

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

This was the second time on BA, food terrible, bathrooms gross, boarding late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress.

The flight was delayed twice and because of that, we missed our connecting flight. British Airways then attempted to put us on the last flight to Milan from London which would have kept us in the airport for 12 hours. We had to speak to several levels of bureaucracy until BA management let us fly on a flight that only kept us in the airport for two hours. If there was an earlier flight, why weren’t we put on that flight from the start? Unacceptable behavior from what was once my favorite carrier.

The payment system was not working so was unable to connect wifi the entire flight

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

Our luggage didn’t arrive with us, that puts a damper on the whole trip.

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

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

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