$231 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 12/10. 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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Cheap Flights from Dulles Intl to Denmark

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Copenhagen
Copenhagennonstop$473
Billund
Billund2 stops$524
Aarhus
Aarhus2 stops$773
Copenhagen
Copenhagennonstop$473
Billund
Billund2 stops$524
Aarhus
Aarhus2 stops$773

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

Sat, Feb 14 - Thu, Feb 19
Scandinavian Airlines Logo
8:30 pm - 10:35 amIAD-CPH
8h 05mnonstop
Scandinavian Airlines Logo
1:55 pm - 5:15 pmCPH-IAD
9h 20mnonstop
$473Scandinavian Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 17
Scandinavian Airlines Logo
12:19 pm - 7:10 amIAD-CPH
12h 51m1 stop
Scandinavian Airlines Logo
1:55 pm - 5:15 pmCPH-IAD
9h 20mnonstop
$474Scandinavian Airlines
Find Deal
Tue, Nov 18 - Tue, Nov 25
Icelandair Logo
7:40 pm - 11:45 amIAD-CPH
10h 05m1 stop
Icelandair Logo
12:55 pm - 6:30 pmCPH-IAD
11h 35m1 stop
$485Icelandair
Find Deal
Mon, Dec 8 - Wed, Dec 17
Icelandair Logo
7:40 pm - 11:45 amIAD-CPH
10h 05m1 stop
Icelandair Logo
6:15 am - 6:30 pmCPH-IAD
18h 15m1 stop
$486Icelandair
Find Deal
Mon, Nov 24 - Mon, Dec 15
Lufthansa Logo
10:55 pm - 5:35 pmIAD-CPH
12h 40m1 stop
Lufthansa Logo
10:10 am - 3:50 pmCPH-IAD
11h 40m1 stop
$487Lufthansa
Find Deal
Sun, Mar 1 - Tue, Mar 3
United Airlines Logo
5:40 pm - 5:35 pmIAD-CPH
17h 55m1 stop
United Airlines Logo
6:50 am - 8:15 pmCPH-IAD
19h 25m1 stop
$488United Airlines
Find Deal
Mon, Dec 1 - Sat, Dec 6
Lufthansa Logo
10:55 pm - 5:35 pmIAD-CPH
12h 40m1 stop
Lufthansa Logo
1:10 pm - 8:05 pmCPH-IAD
12h 55m1 stop
$490Lufthansa
Find Deal
Mon, Mar 2 - Wed, Mar 4
United Airlines Logo
5:40 pm - 12:25 pmIAD-CPH
12h 45m1 stop
United Airlines Logo
10:05 am - 9:03 pmCPH-IAD
16h 58m2 stops
$499United Airlines
Find Deal
Wed, Nov 26 - Mon, Dec 8
KLM Logo
6:05 pm - 9:40 amIAD-BLL
9h 35m1 stop
KLM Logo
10:25 am - 4:05 pmBLL-IAD
11h 40m1 stop
$527KLM
Find Deal
Sun, Nov 16 - Sun, Nov 23
KLM Logo
6:05 pm - 1:45 pmIAD-AAL
13h 40m1 stop
KLM Logo
6:00 am - 4:05 pmAAL-IAD
16h 05m1 stop
$573KLM
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 $477 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 $477.

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 $627 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 February, when tickets cost $507 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $825 and $737 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, Friday 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 Saturdays 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 9% 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$231
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 17% 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 $562 on average. Morning departures are around 37% 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.

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.
7.7
KLMOverall score based on 1406 reviews
8.4Crew
7.8Boarding
7.7Comfort
7.1Entertainment
7.3Food
Airline reviews

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

2.0 MediocreAbisola, Oct 2025CDG - AMS
Read more KLM reviews

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

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.

first of all, the grand person that I tried to upgrade to Business told me there were no seats available. I don't think she really knew how to use the system at all. They were lying to me then I went and sat at my assigned seat and I asked them again if they had seats in business class one of the hostesses proceeded to tell me now the flight is full. The flight was pretty full, but after we took off, there were at least 10 seats in business that they were not occupied so they lied to me basically and I'm really upset about that.

The flight was cancelled without explanation, and the replacement flight was late

No vegetarian option was provided for the regular meal or the pre-landing snack.

The Scandinavian flight was excellent, however the second flight was partnered with TAP Portugal which was not so good. crowded gate area with no chairs, delayed flight, bad boarding process, no entertainment system onboard, and the baggage didn’t get to the carousel until well over an hour which caused our taxi that was waiting to leave. Love SAS, hate TAP.

1) SAS sent me emails that i could check in but that was just a waste of time because traveling to the us i actually had to check-in at the airport. 2) SAS evidently does not care about vegetarians as it does not offer regular veggie alternatives in the transcontinental flights.

Great logistics and timeliness as we arrived quite early. Flight smooth and fast. Excellent entertainment. Plane itself was a bit tired and the crew mostly indifferent. Baggage took forever but that’s on CPH. Would use SAS again for sure.

SAS has too many other airliners. They don't need to exist.

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.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

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.

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

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.

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.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

Everything went smoothly and the staff was very kind. I’m glad I purchased the extra leg room for my long flight; it was totally worth it. We were served 2 meals for a 9 hour flight which I was not expecting and they were very tasty. I appreciated them being vegetarian. Customs line in Munich was long; I had a choice to have a 1 hr 40 min layover or 2 hr 40 min layover; I took the longer layover which I was thankful for because my flight was delayed 30 minutes and there’s a good chance I would have missed my connecting flight. This was my very first international flight and I would fly Discover again without hesitation. Thank you for taking good care of me!

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