$138 Find Cheap Flights from Washington Dulles Airport to Denmark

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 Denmark departing on 10/21. 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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Cheap Flights from Dulles Intl to Denmark

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Copenhagen
Copenhagen2 stops$480
Billund
Billund1 stop$502
Aarhus
Aarhus2 stops$669
Copenhagen
Copenhagen2 stops$480
Billund
Billund1 stop$502
Aarhus
Aarhus2 stops$669

Book Cheap Dulles Intl to Denmark Plane Tickets

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

Tue, Oct 28 - Tue, Nov 4
Scandinavian Airlines Logo
12:09 pm - 7:00 amIAD-CPH
13h 51m2 stops
Scandinavian Airlines Logo
1:15 pm - 11:57 amCPH-IAD
28h 42m2 stops
$480Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 3
Air Canada Logo
4:30 pm - 12:25 pmIAD-CPH
14h 55m2 stops
Air Canada Logo
6:55 am - 8:54 pmCPH-IAD
19h 59m2 stops
$481Air Canada
Find Deal
Thu, Nov 6 - Tue, Nov 11
Scandinavian Airlines Logo
7:59 pm - 7:10 amIAD-CPH
29h 11m1 stop
Scandinavian Airlines Logo
12:55 pm - 7:08 pmCPH-IAD
12h 13m1 stop
$482Scandinavian Airlines
Find Deal
Sun, Nov 16 - Fri, Nov 21
Scandinavian Airlines Logo
12:11 pm - 7:10 amIAD-CPH
12h 59m1 stop
Scandinavian Airlines Logo
12:50 pm - 11:31 amCPH-IAD
28h 41m2 stops
$483Scandinavian Airlines
Find Deal
Sun, Feb 8 - Wed, Feb 18
Scandinavian Airlines Logo
12:30 pm - 7:10 amIAD-CPH
12h 40m1 stop
Scandinavian Airlines Logo
12:50 pm - 11:53 amCPH-IAD
29h 03m2 stops
$485Scandinavian Airlines
Find Deal
Sun, Nov 30 - Tue, Dec 2
United Airlines Logo
5:15 pm - 6:05 pmIAD-CPH
18h 50m1 stop
United Airlines Logo
2:20 pm - 3:51 pmCPH-IAD
31h 31m2 stops
$520United Airlines
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Tue, Nov 25 - Tue, Dec 2
United Airlines Logo
5:25 pm - 2:10 pmIAD-CPH
14h 45m1 stop
United Airlines Logo
6:55 am - 4:30 pmCPH-IAD
15h 35m2 stops
$529United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 28
SWISS Logo
8:45 pm - 2:15 pmIAD-CPH
11h 30m1 stop
SWISS Logo
9:50 am - 5:40 pmCPH-IAD
12h 50m1 stop
$533SWISS
Find Deal
Tue, Dec 23 - Fri, Jan 2
KLM Logo
6:05 pm - 1:50 pmIAD-BLL
13h 45m1 stop
KLM Logo
10:25 am - 4:05 pmBLL-IAD
11h 40m1 stop
$1,152KLM
Find Deal
Tue, Dec 23 - Fri, Jan 2
Lufthansa Logo
6:20 pm - 1:40 pmIAD-BLL
13h 20m2 stops
Lufthansa Logo
6:30 am - 3:50 pmBLL-IAD
15h 20m1 stop
$1,593Lufthansa
Find Deal
Booking Insights

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

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

What is the cheapest Washington, D.C. Dulles Intl Airport to Denmark flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Denmark from Washington, D.C. Dulles Intl Airport found in the last 72 hours was to Copenhagen, at $417 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Copenhagen (CPH), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $417.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Denmark?

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 $675 on average.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Denmark?

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 Denmark, 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 Denmark is October, when tickets cost $480 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $826 and $739 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Denmark?

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

If your flying dates are flexible, you should consider flying to Denmark on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Washington Dulles Airport to Denmark. For your return ticket, we recommend flying on a Monday and avoiding Tuesdays for the best deals.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Denmark?

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 Denmark, 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 Denmark, you should book around 4 weeks before departure, which saves you about 10% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$138
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Washington Dulles Airport to Copenhagen

FAQs - booking Denmark flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Denmark?

    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 Denmark.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Denmark 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 Denmark?

    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 from Washington Dulles Airport to Denmark with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Denmark?

    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 from Washington Dulles Airport to Denmark up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Denmark?

    The cheapest time of day to fly to Denmark is generally in the evening, when round-trip flights cost $581 on average. Morning departures are around 33% more expensive than evening flights, on average. The most expensive time of day to fly to Denmark is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $871.

Top tips for finding cheap flights to Denmark

  • Looking for a cheap flight? 25% of our users found tickets from Washington Dulles Airport to the following destinations at these prices or less: Copenhagen $377 one-way - $489 round-trip

Reviews of the top 5 airlines serving from Dulles Intl to Denmark

 
Need help choosing which airline to fly with from Dulles Intl to Denmark? 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.
7.8
KLMOverall score based on 1385 reviews
8.4Crew
7.2Entertainment
7.8Boarding
7.7Comfort
7.3Food
Airline reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

2.0 MediocrePeter, Aug 2025SAN - AMS
Read more KLM reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Only one choice for meal seats had no leg room

I didn't book special seats but the ones I got were great. The food wasn't good but on par with other airlines

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.

Love thiscsirlibe. So civilized and kind. Good food. Good treatment. On time. Excellent communication.

Online check in of SAS is very poor. Even the kiosks at London had system problems. Either it would print boarding tickets or luggage tags. Many other customers had problems . SAS staff was good and helped.

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

It was great, used to fly them a lot back 20 years ago but since did KLM as my flight route changed, but very happy with my experience and will come again!

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.

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

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.

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.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

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.

Excellent experience in every way, from ground crew helpfulness, boarding experience, inflight service all the way to modern equipment. My new favorite airline. I wish I could fly with them more often.

For a no frills flight this was surprising comfortable. The crew were helpful and nice. The flight was smooth and there were no delays or issues which I haven't had on a flight in a long time. I would definitely fly with them again.

The flight was canceled by play less than 24 hours prior to the trip, and I was unable to re-book. Have not received a refund for the trip despite filling out the appropriate form.

Was was cancelled less than 24 hours prior to my scheduled departure by PLAY. Despite my attempts to rebook my travel, I encountered significant cost increases that rendered this option unfeasible. In accordance with EC Regulation 261/2004, airlines are required to issue a full refund for cancelled flights within seven days of the scheduled departure if a refund is requested instead of rebooking on another flight. It has been three weeks without a refund or an answer

Have not recieved full refund for my flight, which was cancelled less than 24 hours prior to my scheduled departure by PLAY. Despite my attempts to rebook my travel, I encountered significant cost increases that rendered this option unfeasible. In accordance with EC Regulation 261/2004, airlines are required to issue a full refund for cancelled flights within seven days of the scheduled departure if a refund is requested instead of rebooking on another flight. This request was completed three weeks ago an answer or refund.

It would have been better to have USB charging ports available on the longer haul Flight that one of 2 hours

Was very good Staff was great. No tv monitors tho. So long flights make it longer

The worst. No free beverages. No entertainment on an overseas flight. Not enough space. Never again.

Play is affordable! Only way we fly from the states to Europe. Left late but arrived on time

have screens on backs of chairs...offer free snacks and water

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