IAD - HEL

$300 Find Cheap Flights from Washington Dulles Airport to Helsinki - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Helsinki departing on 10/18. 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, 0 bags

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Everything you should know

Cheapest round-trip
$369
Typical prices: $469-$667
Scandinavian Airlines
Mon 9/14Wed 9/30
IAD - HEL • 1 stop
Cheapest one-way
$300
Icelandair
Sun 10/18
IAD - HEL • 1 stop
Top airlines
Cheapest • from $369 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Helsinki. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $650 (round-trip)
Shortest trip • 11h 01m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 40% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Helsinki (IAD-HEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 Dulles Intl to Helsinki

Mon, Sep 14 - Wed, Sep 30
Scandinavian Airlines Logo
8:20 pm - 8:25 pm
IAD
-
HEL
17h 05m
1 stop
Scandinavian Airlines Logo
9:05 pm - 5:00 pm
HEL
-
IAD
26h 55m
1 stop
$369Scandinavian Airlines
Mon, Sep 14 - Wed, Sep 30
Scandinavian Airlines Logo
8:20 pm - 3:20 pm
IAD
-
HEL
12h 00m
1 stop
Scandinavian Airlines Logo
9:15 pm - 5:00 pm
HEL
-
IAD
26h 45m
2 stops
$371Scandinavian Airlines
Sun, Nov 15 - Thu, Dec 3
Icelandair Logo
7:40 pm - 1:00 pm
IAD
-
HEL
10h 20m
1 stop
Icelandair Logo
2:00 pm - 6:30 pm
HEL
-
IAD
11h 30m
1 stop
$460Icelandair
Fri, Jan 15 - Sat, Jan 23
Icelandair Logo
7:40 pm - 1:00 pm
IAD
-
HEL
10h 20m
1 stop
Icelandair Logo
2:00 pm - 6:30 pm
HEL
-
IAD
11h 30m
1 stop
$461Icelandair
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
8:20 pm - 4:40 pm
IAD
-
HEL
13h 20m
2 stops
Multiple Airlines Logo
5:30 am - 5:00 pm
HEL
-
IAD
18h 30m
3 stops
$698Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
8:20 pm - 4:40 pm
IAD
-
HEL
13h 20m
2 stops
Multiple Airlines Logo
5:30 am - 5:00 pm
HEL
-
IAD
18h 30m
3 stops
$699Multiple Airlines
Fri, Nov 6 - Tue, Nov 10
Lufthansa Logo
10:55 pm - 6:45 pm
IAD
-
HEL
12h 50m
1 stop
Lufthansa Logo
7:00 am - 3:55 pm
HEL
-
IAD
15h 55m
1 stop
$729Lufthansa
Tue, Nov 3 - Sun, Nov 8
Lufthansa Logo
10:55 pm - 6:45 pm
IAD
-
HEL
12h 50m
1 stop
Lufthansa Logo
7:05 am - 3:55 pm
HEL
-
IAD
15h 50m
1 stop
$734Lufthansa
Wed, Jan 27 - Sun, Jan 31
United Airlines Logo
5:35 pm - 6:45 pm
IAD
-
HEL
18h 10m
1 stop
United Airlines Logo
12:35 pm - 12:14 am
HEL
-
IAD
18h 39m
2 stops
$764United Airlines
Sun, Dec 27 - Sat, Jan 16
United Airlines Logo
10:44 pm - 11:50 am
IAD
-
HEL
30h 06m
2 stops
United Airlines Logo
12:35 pm - 7:34 am
HEL
-
IAD
25h 59m
2 stops
$769United Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Helsinki flights

Get data-powered insights and trends into flights from Dulles Intl 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. Dulles Intl Airport to Helsinki?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Helsinki departing in September.

Flight prices are below average for this route right now.

Flights to Helsinki from Washington, D.C. Dulles Intl Airport usually cost between $756 and $808 in September.
The lowest price found in the past 5 days was $369 on Scandinavian Airlines (Sep 14-Sep 30).

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Helsinki is October, where tickets cost $406 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,009 and $976 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Helsinki, you should book around 2 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

October

Cheapest flight

$300
Best time to beat the crowds with an average 41% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Washington Dulles Airport to Helsinki

When to book flights from Dulles Intl to Helsinki

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Helsinki flights

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

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Helsinki was $300 for a one-way ticket and $369 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Helsinki?

    A passport is required to fly from Washington Dulles Airport to Helsinki.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Helsinki?

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

  • Which airline alliances offer flights from Washington Dulles Airport to Helsinki?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport 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, Scandinavian Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Helsinki are Scandinavian Airlines and United Airlines. With an average price for the route of $555 and an overall rating of 7.4, Scandinavian Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $774 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Helsinki.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helsinki from Washington Dulles Airport 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 Dulles Airport 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 Dulles Airport with another airline. Booking your flights between Washington Dulles Airport 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 Washington Dulles Airport 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 Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Dulles Intl 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 Dulles Intl 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 1912 reviews
6.8Food
6.8Entertainment
8.0Crew
7.3Comfort
7.7Boarding
Airline reviews

The crew was amazing. Our seats was not very clean and even that was not a full flight but our seats was right beside the WC which did not let us to have a moment of rest.

6.0 Goodkarso, Jul 2026
IAD - CPH
Read more Scandinavian Airlines reviews

The crew was amazing. Our seats was not very clean and even that was not a full flight but our seats was right beside the WC which did not let us to have a moment of rest.

Excellent service, and came on time! Thank you for your dinner that was chicken with salat/, and 🍰 it was good quality food , the breakfast was very good with good cheese , butter,etc and the tea was very good quality. The space where I was seat was nice so I could stretch my legs. I dit not have the bread as I am in a keto died. Have great time everyone in Scandinavia airline.

You cancelled my flight and didn't arrange another. Sent no info except YOUR FLIGHT HAS BEEN CANCELLED. HERES WHAT TO DO NEXT. and the rest of the email was blank???

The first flight was delayed. We missed the second flight, which was rebooked 9 hours later. We missed all our arrangements for the first day of vacation.

Old plane, food not that great - lacked taste. Crew was nice but strict.

Terrible airlines, kept lying to me about the fact that my connection flight was cancelled. Left me hanging until last min. NEVER AGAIN

Mediocre. Maybe due to Economy light. Staff was great. Space shrunk, not for me, and definitely not for Vikings. Food was decent. Assistance lagging. There was a possibility to upgrade to Premium economy, however my bid was immediately classified as low and not even considered (though well over minimum bid). Thus I was no bleeding dry.

The stewardess was incredibly rude. The gave you only one drink with dinner.

Crew was unresponsive to request for a soda. Food was horrible and I’d venture to guess many others thought so as well by the amount that they trashed. Made me sick to my stomach and ended up in bed the remainder of the day once we arrived. Screaming child for 3/4 of the almost 8 hour flight. Crew had no headphones whatsoever for free or purchase. Seating way too tight and we upgraded our seats. I do not see us ever flying this airline again.

Boarding and crew were excellent. Seat could have been more comfortable (hard on lower back).

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Worst service- attendants dont want to help and sat us in front of bathroom

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Damage May baggage and I report the airport agant and they see it

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.

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.

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

Staff in flight and at the airport were very helpful. A short time between flights made it stressful to get to the connecting flight and we probably would not have made it without the staff’s help.

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.

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.

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.

Very efficient and excellent service. Nice amenities and beautiful plane. Elevated meals. Boarding could have been more organized. We missed our connecting flight due to EU entry but Lufthansa was extremely quick to rebook us.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Bad! Disaster!! The LH419 was cancelled after 4 hrs on board with no AC and no toilets

We had almost a 6 hr delay, primarily due to weather, the e problem was that they communicated this delay and its length very poorly. The boarding was chaotic - even though they had hours to figure it out! The plane was an old 747 whose touch screens barely worked and there was a faulty USB port under my seat rest (something that wasn't labeled as being there) They organized my delayed luggage well. And I could get updates on the Lufthansa website. My shirt connecting flight charged for everything except water. Coffee was over 3€

It was freezing. I asked crew member for a blanket and was told it might be in front of plane but I never got one. I turned off all the vents but still froze.

Everything you need to know for your flight from Dulles Intl to Helsinki

Information on your arrival and departure airports