$365 Find Cheap Flights from Denmark to Washington - 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 Denmark to Washington departing on 9/16. 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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1 adult, Economy, 0 bags

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Cheap Flights from Denmark to Washington

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

Mon, Sep 7 - Sun, Sep 13
British Airways Logo
9:30 pm - 8:52 pm
BLL
-
SEA
32h 22m
2 stops
British Airways Logo
6:15 am - 8:35 pm
SEA
-
BLL
29h 20m
2 stops
$552British Airways
Mon, Sep 7 - Sun, Sep 13
Icelandair Logo
10:50 pm - 11:45 am
BLL
-
SEA
21h 55m
1 stop
Icelandair Logo
3:40 pm - 9:35 pm
SEA
-
BLL
20h 55m
1 stop
$570Icelandair
Fri, Sep 11 - Thu, Sep 24
Icelandair Logo
10:35 pm - 11:50 am
CPH
-
PDX
22h 15m
1 stop
Icelandair Logo
3:30 pm - 9:45 pm
PDX
-
CPH
21h 15m
1 stop
$570Icelandair
Mon, Nov 23 - Thu, Jan 28
Multiple Airlines Logo
8:45 pm - 11:25 am
BLL
-
SEA
23h 40m
1 stop
Multiple Airlines Logo
1:40 pm - 12:05 pm
SEA
-
BLL
13h 25m
1 stop
$592Multiple Airlines
Mon, Aug 24 - Sun, Aug 30
KLM Logo
6:45 pm - 4:27 pm
BLL
-
SEA
30h 42m
1 stop
KLM Logo
1:50 pm - 11:00 am
SEA
-
BLL
12h 10m
1 stop
$614KLM
Mon, Aug 24 - Sun, Aug 30
Delta Logo
6:00 am - 11:37 am
BLL
-
SEA
14h 37m
1 stop
Delta Logo
8:59 am - 9:35 am
SEA
-
BLL
15h 36m
2 stops
$654Delta
Wed, Aug 12 - Sun, Aug 16
KLM Logo
6:20 am - 4:27 pm
AAL
-
SEA
19h 07m
1 stop
KLM Logo
5:45 pm - 10:00 am
SEA
-
AAL
31h 15m
1 stop
$656KLM
Mon, Aug 24 - Sun, Aug 30
Delta Logo
4:00 pm - 4:27 pm
BLL
-
SEA
33h 27m
1 stop
Delta Logo
1:50 pm - 9:35 am
SEA
-
BLL
34h 45m
1 stop
$665Delta
Thu, Nov 19 - Sat, Nov 21
United Airlines Logo
10:05 am - 2:37 pm
CPH
-
PDX
37h 32m
2 stops
United Airlines Logo
2:37 pm - 9:15 am
PDX
-
CPH
33h 38m
2 stops
$674United Airlines
Wed, Aug 12 - Thu, Aug 20
United Airlines Logo
6:20 am - 11:55 am
CPH
-
SEA
14h 35m
1 stop
United Airlines Logo
5:13 pm - 8:55 am
SEA
-
CPH
30h 42m
2 stops
$718United Airlines
Booking Insights

KAYAK's insights & trends for flights to Washington

Get data-powered insights and trends for flights to Washington to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Washington?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

The cheapest ticket to Washington from Denmark found in the last 5 days was to Seattle, at $824 round-trip. The most popular route is Copenhagen (CPH) to Seattle (SEA) and the cheapest round-trip airline ticket found on this route in the last 5 days was $824.

What is the cheapest month to fly from Denmark to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Denmark to Washington, 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 Denmark to Washington is September, when tickets cost $501 (return) on average. On the other hand, the most expensive months are January and October, when the average cost of round-trip tickets is $977 and $757 respectively.

What is the cheapest time of day to fly to Washington?

The average price for all round-trip flights from Denmark to Washington depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington is generally in the afternoon, when round-trip flights cost $1,167 on average. The most expensive time of day to fly to Washington is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,167.

How far in advance should I book a flight from Denmark to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, 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 Denmark to Washington, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Which is the cheapest airport to fly into in Washington?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington is Seattle/Tacoma Intl Airport (SEA), with an average flight price of $1,059.

Good to know

Low season

November

Cheapest flight

$365
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Billund to Seattle

FAQs for booking flights from Denmark to Washington

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

    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 Denmark to Washington.

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

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

    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 Denmark to Washington 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 Denmark to Washington?

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

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Friday where round-trip tickets can be as cheap as $972. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $1,408 on average.

Reviews of the top 4 airlines serving from Denmark to Washington

 
See real verified KAYAK customer reviews for airlines flying to Washington. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Denmark to Washington. 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 Denmark to Washington? 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
DeltaOverall score based on 8486 reviews
8.1Boarding
7.8Entertainment
8.5Crew
7.2Food
7.8Comfort
Airline reviews

They did everything right and everything happened right on time.

10.0 ExcellentSteve, Jul 2026
AMS - SEA
Read more Delta reviews

They did everything right and everything happened right on time.

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Much better than I expected. I had an economy ticket so I was really happy the flight was so comfy and the service so generous. Passengers were all polite too.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Bid process for upgrade is very frustrating. I was notified that I had won the bidding, then was told there was no seat available.

Overall a great experience. I didn’t like that they didn’t assign seats until we arrived at airport. All the employees we interacted with at the airport and on the flight were kind and helpful.

It was ok but no WiFi I think I’ll fly Iceland air next time

My daughter always gets sick when we order the gluten free meal option. Internet didn’t work as advertised.

All went smoothly. That's what I want on a long flight.

I expected more, but they will nickel and dime you for everything. I did not enjoy flying with this airline.

Really like this airline. Best food for airlines and comfortable seats and attentive staff. Delay was due to air traffic.

great crew, professional, funny, and great service. good condition plane too! great experience

Very difficult to clearly hear the dialogue on videos due to airplane engine sound. Flying to Copenhagen audio was very clear. Food was excellent. Returning flight--Lunch and breakfast food was the worst I've experienced. Audio was terrible. Why the difference?

Travelling coach, comfort is all in one's perspective. Movie choices were great. Food was OK. Flight crew were pleasant. Tip: If they come through asking if you want tea or coffee, do not ask for water. They get miffed. So use the call button after they pass through.

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

leg space better than expected. two washrooms for one plane isn't enough.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

Everything was fantastic. Modern plane. All the amenities! Although the paid snacks and meals are pure robbery. Like i understand airlines need to make money, but 11$ USD for an overnight oats with some nuts in it and barely any pieces of apple.... Highway robbery

Never happened, because of the first delayed flight I lost the connection and had to wait overnight and take two flights to reach my destination.

The flight was delayed, but other than that everything was fine.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

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.

Terrible way of boarding in Reykjavik. Seats comfortable. Meal was good.

Unlike my prior three connections on this latest journey, this flight was fairly good. Only issue was boarding as it was once again one of those Icelandic issues of bunch up, walk in the rain to a bus that then has you run up three flights of stairs to board the plain. I was in Saga class but the bus scramble eliminates any chance you get on first and have to then find a place to squeeze your carry on into an overhead that the people in economy populate so they can grab it on their way out up front. But unlike other Icelandic flights this journey I did find more the of the business class like accommodations then the other air segments. This one found a pillow and blanket waiting for me and I actually received a small cup of sparkling wine and had a bottle of water in place. Service was attentive and the flight departed and arrived on time. Received a menu and had choices of a hot or cold meal. I choose the hot which was cod and it was good. Decent size portion, salad and a choice of dinner rolls. Beverage menu was a selection of wines, beer and soft drinks. Desert was a small Tiramisu. Overall the six hour flight was a good experience for the price point.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

Flight was delayed. They did a terrible job rebooking me. Agent on the ground was useless. The partner airline who ran the plane was able to help me but Iceland air was useless

Flight delayed Delay to the gate upon arrival Baggage took more than an hour so we missed our connecting!!! Terrible experience!

Everything you need to know for your flight to Washington

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.