WAS - HEL

$320 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Helsinki departing on 9/29. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Helsinki.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Helsinki.
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Flight Deals

Cheap Flights from Washington, D.C. to Helsinki (WAS-HEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Helsinki

Thu, Oct 30 - Wed, Nov 12
Icelandair Logo
8:40 pm - 12:55 pmIAD-HEL
10h 15m1 stop
Icelandair Logo
1:55 pm - 6:30 pmHEL-IAD
11h 35m1 stop
$375Icelandair
Find Deal
Wed, Feb 11 - Wed, Feb 18
Icelandair Logo
7:40 pm - 12:55 pmIAD-HEL
10h 15m1 stop
Icelandair Logo
1:55 pm - 6:30 pmHEL-IAD
11h 35m1 stop
$376Icelandair
Find Deal
Wed, Dec 3 - Wed, Dec 10
Scandinavian Airlines Logo
7:59 pm - 10:40 amIAD-HEL
31h 41m2 stops
Scandinavian Airlines Logo
9:00 pm - 5:15 pmHEL-IAD
27h 15m1 stop
$412Scandinavian Airlines
Find Deal
Tue, Oct 28 - Sat, Nov 1
Scandinavian Airlines Logo
12:09 pm - 10:40 amIAD-HEL
16h 31m3 stops
Scandinavian Airlines Logo
6:15 am - 7:50 pmHEL-IAD
19h 35m1 stop
$417Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
American Airlines Logo
1:27 pm - 10:45 amBWI-HEL
15h 18m1 stop
American Airlines Logo
12:30 pm - 11:02 pmHEL-BWI
17h 32m1 stop
$482American Airlines
Find Deal
Thu, Oct 30 - Wed, Nov 12
American Airlines Logo
7:06 pm - 1:55 pmDCA-HEL
12h 49m1 stop
American Airlines Logo
12:30 pm - 11:00 pmHEL-DCA
17h 30m1 stop
$483American Airlines
Find Deal
Sun, Nov 9 - Sun, Nov 16
United Airlines Logo
2:00 pm - 12:00 pmDCA-HEL
15h 00m2 stops
United Airlines Logo
6:55 am - 9:56 pmHEL-DCA
22h 01m2 stops
$507United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
1:10 pm - 1:10 pmBWI-HEL
17h 00m2 stops
United Airlines Logo
6:55 am - 9:19 pmHEL-BWI
21h 24m2 stops
$521United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
British Airways Logo
8:35 pm - 11:15 pmBWI-HEL
43h 40m2 stops
British Airways Logo
7:35 pm - 6:45 pmHEL-BWI
30h 10m1 stop
$587British Airways
Find Deal
Thu, Dec 4 - Tue, Dec 9
British Airways Logo
8:35 pm - 11:15 pmBWI-HEL
43h 40m2 stops
British Airways Logo
11:10 am - 6:45 pmHEL-BWI
38h 35m2 stops
$588British Airways
Find Deal

Everything you should know

Top airlines
Icelandair
Cheapest • from $375 (round-trip)
Scandinavian Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 35% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$375
Overall average: $505
Icelandair
Thu 10/30Wed 11/12
IAD - HEL • 1 stop
Cheapest one-way
$320
Multiple Airlines
Mon 9/29
IAD - HEL • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Helsinki!
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Helsinki flights

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

How much is a round-trip flight from Washington, D.C. to Helsinki?

What’s the cheapest day of the week to fly from Washington, D.C. to Helsinki?

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

If you are looking for a flight deal from Washington, D.C. to Helsinki, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Helsinki, Monday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from Washington, D.C. to Helsinki?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. 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 Washington, D.C. to Helsinki is November, where tickets cost $364 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $775 and $696 respectively.

How far in advance should I book a flight from Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. to Helsinki, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$320
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 36% lower on average.
Flight from Washington Dulles Airport to Helsinki

When to book flights from Washington, D.C. to Helsinki

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 Washington, D.C. to Helsinki

  • What is the cheapest flight from Washington, D.C. to Helsinki?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Helsinki was $320 for a one-way ticket and $375 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Helsinki?

    Yes, you’ll need a passport to travel to Helsinki from Washington, D.C..

  • Which airports will I be using when flying from Washington, D.C. to Helsinki?

    Washington, D.C. has 2 major airports: Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl. Helsinki-Vantaa is the only airport in Helsinki. You’ll usually find the cheapest deals if you fly from Washington Dulles Airport.

  • Which aircraft models fly most regularly from Washington, D.C. to Helsinki?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Helsinki?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Washington, D.C. and Helsinki, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Helsinki, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Helsinki are Delta and KLM. With an average price for the route of $737 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $711 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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 Washington, D.C. to Helsinki.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Helsinki?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helsinki from Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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 Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Washington, D.C. to Helsinki

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. 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 Washington, D.C. 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.
7.4
Scandinavian AirlinesOverall score based on 1484 reviews
8.0Crew
7.7Boarding
6.7Entertainment
7.3Comfort
6.7Food
Airline reviews

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

6.0 GoodArt, Aug 2025SEA - CPH
Read more Scandinavian Airlines reviews

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

I do not have a problem with the airline but both my two suitcases that were supposed to go from Hawaii to Copenhagen didn’t get on the plane in Seattle. I arrive on Monday the 21st at 10:30 in the morning. I did not get my two suitcases before Friday late afternoon that is unacceptable.

No choice of food. Needed to pay more even for a can of coke!!!

The seats were really close together and hard to get comfortable. The food was okay. The cheese was amazing! I loved the cold towels they gave us.

When my flight was changed from delays they were quick to rebook me.

I really enjoyed how clean and big the aircraft was, as well as how friendly the crew was.

The Recaro seats are stiff and have minimal padding. Quite uncomfortable for a 5.5 hour flight. The upfront seats and space are identical to the ones in the back. The upgrade was not worth it.

Airline left me stranded in the U.S. gave me an unrequested refund of 40% of booking and canceled my trip back! When I asked why, the said “we don’t have to tell you why”. “But you can rebook”. Never again! Paid 2x and rebooked on Austrian. What a joke!

Painful seats for a 10 hour flight. There’s a very hard flat board in the seat that goes up to half the back and after 7 hours it gets impossible to find the right position to avoid the pain.

I loved it the staff across the terminal process from entry to airport and boarding of flight excellent. Onboard aircraft the flight attendants crew were fabooois lovely and always assisting

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

It was good. The air plane is clean and staff were friendly.

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

The crew was wonderful at check in, the gate and on board. Felt the luggage had more room than the passengers. The seats were smaller than most domestic U.S. airlines. I'm only 5'2" and I had little legroom. There were only 2 bathrooms in coach. Needed more. The flight was very smooth but not the most comfortable.

There was no lounge at Boston for us to use. Typically flying first class overseas comes with lounge privileges. The seats did not recline even a little. My headset only worked on one side. I felt like I was flying on Ryan Air, not Icelandic Air.

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Some how my flight was canceled, neither BA or Justfly.com accepted responsibility. I only found out about this the day before when I tried to check in. I had to book another flight which due to the time ( day before) cost me $300 more. I was still receiving notifications about the flight even when I was on another flight from you. So no my flight to London was not good.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Everything you need to know for your flight from Washington, D.C. to Helsinki

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