SEA - HEL

$273 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 8/11. 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.
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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 Flight Deals 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.

Recent round-trip flight deals from Seattle to Helsinki

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Helsinki.
Discover the best prices for you by selecting your travel dates on KAYAK.
Turkish Airlines Logo
7:10 pm - 11:40 amSEA-HEL
30h 30m1 stop
Turkish Airlines Logo
12:35 pm - 10:35 amHEL-SEA
32h 00m1 stop
$620Turkish Airlines
Find Deal
Wed, May 21 - Fri, Aug 22
Turkish Airlines Logo
7:10 pm - 11:40 amSEA-HEL
30h 30m1 stop
Turkish Airlines Logo
12:35 pm - 10:35 amHEL-SEA
32h 00m1 stop
$622Turkish Airlines
Find Deal
Thu, May 15 - Fri, Aug 22
Turkish Airlines Logo
7:10 pm - 11:40 amSEA-HEL
30h 30m1 stop
Turkish Airlines Logo
12:35 pm - 5:15 pmHEL-SEA
38h 40m1 stop
$640Turkish Airlines
Find Deal
Sun, Aug 3 - Tue, Aug 12
Icelandair Logo
7:00 pm - 11:20 amSEA-HEL
30h 20m2 stops
Icelandair Logo
12:00 pm - 5:50 pmHEL-SEA
15h 50m2 stops
$745Icelandair
Find Deal
Wed, Aug 6 - Fri, Aug 22
Icelandair Logo
7:00 pm - 2:00 pmSEA-HEL
33h 00m1 stop
Icelandair Logo
3:00 pm - 11:25 amHEL-SEA
30h 25m1 stop
$770Icelandair
Find Deal
Sat, May 10 - Sun, Aug 31
American Airlines Logo
5:40 pm - 1:10 pmSEA-HEL
9h 30mnonstop
American Airlines Logo
4:20 pm - 4:00 pmHEL-SEA
9h 40mnonstop
$855American Airlines
Find Deal
Wed, May 14 - Sat, May 24
American Airlines Logo
5:40 pm - 1:10 pmSEA-HEL
9h 30mnonstop
American Airlines Logo
4:00 pm - 11:09 pmHEL-SEA
17h 09m1 stop
$886American Airlines
Find Deal
Wed, May 14 - Sat, May 24
Lufthansa Logo
2:15 pm - 4:40 pmSEA-HEL
16h 25m1 stop
Lufthansa Logo
6:00 am - 10:20 pmHEL-SEA
26h 20m2 stops
$890Lufthansa
Find Deal
Mon, May 19 - Fri, Aug 22
Finnair Logo
5:40 pm - 1:10 pmSEA-HEL
9h 30mnonstop
Finnair Logo
4:20 pm - 4:00 pmHEL-SEA
9h 40mnonstop
$904Finnair
Find Deal
Mon, May 12 - Wed, May 28
Finnair Logo
5:40 pm - 1:10 pmSEA-HEL
9h 30mnonstop
Finnair Logo
4:20 pm - 4:00 pmHEL-SEA
9h 40mnonstop
$1,000Finnair
Find Deal
Sat, May 31 - Wed, Jun 11
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 $547 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,242 and $1,137 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 $2,290 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 6 weeks before departure.

Good to know

Low seasonMarch
High seasonJune
Cheapest flight$273
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly with an average 24% 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 $273 for a one-way ticket and $620 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?

    United Airlines, Lufthansa, KLM, and Asiana Airlines 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, Delta or Finnair?

    The two airlines most popular with KAYAK users for flights from Seattle to Helsinki are Delta and Finnair. With an average price for the route of $1,239 and an overall rating of 8.0, Delta is the most popular choice. Finnair is also a great choice for the route, with an average price of $1,052 and an overall rating of 7.6.

  • 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 $703 or less one-way and $776 or less round-trip.

Prefer to fly direct from Seattle to Helsinki?

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
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 1275 reviews
7.6Boarding
6.9Entertainment
8.1Crew
7.4Comfort
6.7Food
Airline reviews

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.

8.0 ExcellentAnonymous, Jan 2025DFW - CVG
Read more Finnair reviews

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.

Our previous flight was delayed but they waited for us to board.

Flight was delayed, short time connection to next flight but we make it, service was good, worth to fly just to try thair on board blueberry juce. Eccelent communication with airline.

My American Airlines flight was deleted and you guys never let me know

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

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.

The flights were in time and the bags arrived. well done

Overall good. I was surprised how easy it was to get from plain to plain in such a short time. Food choices were not so great and quite expensive. Entertainment was ok. Flights were smooth.

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. :(

Bad. Flights were late, by hours. No clear information was provided even until the delayed boarding time.

Again, lines for boarding are a problem in iceland. The flight itself was fine and very smooth. No complaints. We would definitely fly icelandair again.

Had a screaming child next to us. Not the airline’s fault but still annoying.

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.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

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

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