HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Copenhagen

$169+ Cheap flights from Dulles Intl (IAD) to Copenhagen (CPH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CPH
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Copenhagen with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Kastrup Copenhagen are usually found in October or March, booked 29 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Dulles Intl to Copenhagen

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Copenhagen (CPH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$473
(Icelandair)

One-way from

$169
(KAYAK)

Popular in

June

Cheapest in

October

Average price

$631

Good round-trip deal

$505 or less

Good one-way deal

$379 or less
From Washington, D.C. Dulles Intl to Kastrup Copenhagen
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Kastrup Copenhagen
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Kastrup Copenhagen.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Kastrup Copenhagen.
Search Deals

Find flight deals from Dulles Intl to Copenhagen

Cheapest flights from Dulles Intl to Copenhagen
Explore the most affordable flight options available from Dulles Intl to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Icelandair deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/311:15 pmIAD - CPH
1 stop16h 30mIcelandair
Sun 9/710:35 pmCPH - IAD
1 stop26h 45mIcelandair
Deal found 8/20$473
This Icelandair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/28:30 pmIAD - CPH
1 stop10h 25mIcelandair
Tue 9/910:35 pmCPH - IAD
1 stop26h 45mIcelandair
Deal found 8/19$474
This Icelandair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2611:15 pmIAD - CPH
1 stop25h 05mIcelandair
Mon 9/110:35 pmCPH - IAD
1 stop29h 35mIcelandair
Deal found 8/19$475
This Mytrip deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/132:25 pmIAD - CPH
2 stops15h 35mMultiple Airlines
Sun 10/198:10 pmCPH - IAD
1 stop26h 05mMultiple Airlines
Deal found 8/20$476
This Flybillet deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flybillet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/122:25 pmIAD - CPH
2 stops15h 35mMultiple Airlines
Mon 10/209:40 amCPH - IAD
1 stop12h 35mMultiple Airlines
Deal found 8/20$477
This Gurufare deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:30 pmIAD - CPH
1 stop10h 25mIcelandair
Thu 9/252:00 pmCPH - IAD
1 stop11h 20mIcelandair
Deal found 8/18$478
This CrystalTravel deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:05 pmIAD - CPH
Nonstop7h 50mScandinavian Airlines
Sun 10/195:30 pmCPH - IAD
Nonstop8h 29mScandinavian Airlines
Deal found 8/20$480
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:30 pmIAD - CPH
1 stop13h 15mIcelandair
Tue 9/304:45 pmCPH - IAD
1 stop32h 35mIcelandair
Deal found 8/18$481
This Cheapflightsfares deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:05 pmIAD - CPH
Nonstop7h 50mScandinavian Airlines
Sun 10/195:30 pmCPH - IAD
Nonstop8h 29mScandinavian Airlines
Deal found 8/18$482
This Icelandair deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1711:15 pmIAD - CPH
1 stop16h 30mIcelandair
Thu 9/252:00 pmCPH - IAD
1 stop11h 20mIcelandair
Deal found 8/18$485
This Icelandair deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3111:15 pmIAD - CPH
1 stop31h 40mIcelandair
Sun 9/142:00 pmCPH - IAD
1 stop11h 20mIcelandair
Deal found 8/18$486
This Icelandair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3111:15 pmIAD - CPH
1 stop31h 40mIcelandair
Thu 9/112:00 pmCPH - IAD
1 stop11h 20mIcelandair
Deal found 8/19$487

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Copenhagen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Copenhagen that are best for you.

Fly from

Dulles Intl

Fly to

Copenhagen

Route

Depart

Return

Price

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Thu 9/4

8:30 pm-9:45 pm

1 stop19h 15m

Kastrup Copenhagen

Sun 9/7

10:35 pm-7:20 pm

1 stop26h 45m

$473

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Wed 9/3

11:15 pm-9:45 pm

1 stop16h 30m

Kastrup Copenhagen

Sun 9/7

10:35 pm-7:20 pm

1 stop26h 45m

$473

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Mon 9/1

11:15 pm-3:45 pm

1 stop10h 30m

Kastrup Copenhagen

Tue 9/9

10:35 pm-7:20 pm

1 stop26h 45m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Tue 9/2

8:30 pm-12:55 pm

1 stop10h 25m

Kastrup Copenhagen

Tue 9/9

10:35 pm-7:20 pm

1 stop26h 45m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Fri 9/5

8:30 pm-9:45 pm

1 stop19h 15m

Kastrup Copenhagen

Sun 9/7

10:35 pm-7:20 pm

1 stop26h 45m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Wed 9/3

11:15 pm-3:45 pm

1 stop10h 30m

Kastrup Copenhagen

Sat 9/13

10:35 pm-10:10 pm

1 stop29h 35m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Fri 9/5

8:30 pm-9:45 pm

1 stop19h 15m

Kastrup Copenhagen

Sat 9/13

10:35 pm-7:20 pm

1 stop26h 45m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Tue 9/2

8:30 pm-12:55 pm

1 stop10h 25m

Kastrup Copenhagen

Sat 9/13

10:35 pm-10:10 pm

1 stop29h 35m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Fri 9/5

11:15 pm-9:45 pm

1 stop16h 30m

Kastrup Copenhagen

Tue 9/9

10:35 pm-7:20 pm

1 stop26h 45m

$474

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Tue 9/2

8:30 pm-12:55 pm

1 stop10h 25m

Kastrup Copenhagen

Sun 9/7

10:35 pm-7:20 pm

1 stop26h 45m

$474

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 18 results
1
2

The best insider tips for Washington, D.C. Dulles Intl Airport to Copenhagen flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Copenhagen trip
Airports
IAD

Security queues can be long, so plan extra time for check-in, especially during afternoon and evening hours.

Read more about IADby Ramsey Qubein
CPH

The Metro is the simplest way to reach Copenhagen, with trains every 5 minutes during the day.

Read more about CPHby John Walton
Our travel experts
John Walton

John Walton

Expert on CPH

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Dulles Intl to Copenhagen

Have a flexible travel schedule? Discover the best time to fly to Copenhagen from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Copenhagen

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Copenhagen?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Copenhagen. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Copenhagen, you should look to book at least 29 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Copenhagen?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Copenhagen (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Copenhagen in June is currently the most expensive (average of $909). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to CPH?

Find hourly flight availability from Dulles Intl to Copenhagen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Copenhagen in the afternoon. Doing so could potentially save you 34% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Copenhagen

Get insights into the airlines that provide service to Copenhagen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Copenhagen. Reviews last updated August 20, 2025.
Peruse reviews from past customers who have flown with Scandinavian Airlines, United Airlines, and Icelandair from Washington, D.C. Dulles Intl Airport to Copenhagen to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Comfort

7.3

Entertainment

6.6

Overall

7.4

Food

6.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
Scandinavian Airlines
7.4
Good
1,471 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Comfort

7.3

Entertainment

6.6

Overall

7.4

Food

6.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
United Airlines
7.4
Good
8,928 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Comfort

7.3

Entertainment

6.6

Overall

7.4

Food

6.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
Icelandair
7.0
Good
529 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Comfort

7.3

Entertainment

6.6

Overall

7.4

Food

6.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
PLAY
7.0
Good
103 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Comfort

7.3

Entertainment

6.6

Overall

7.4

Food

6.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
British Airways
6.7
Okay
7,289 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Comfort

7.3

Entertainment

6.6

Overall

7.4

Food

6.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Copenhagen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Copenhagen from Washington, D.C. Dulles Intl?

    Kastrup Copenhagen (CPH), located 5.0 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Copenhagen. 9 airlines have flights to Kastrup Copenhagen from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Kastrup Copenhagen should not be difficult; the airport handles an average of 2 inbound flights from Washington, D.C. Dulles Intl per day.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Copenhagen?

    Icelandair can get you from Washington, D.C. Dulles Intl Airport to Copenhagen in just under 19h 15m. Your travel time can differ by up to . The distance between Washington, D.C. Dulles Intl Airport and Copenhagen is about 4060 mi.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Copenhagen round-trip?

    PLAY, at $272, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Copenhagen.Alternate airlines to your destination round-trip include Icelandair and SWISS. These flights start at 55% lower than the current average price 3 months from now.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Copenhagen?

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Copenhagen is $370. On average you can expect to pay $1,578. The most popular route, (Washington, D.C. Dulles Intl - Kastrup Copenhagen), can usually be booked for $401.

  • Can I find deals for flights from Dulles Intl to Copenhagen that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Copenhagen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Copenhagen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Copenhagen.

  • Can I find deals for business class flights from Dulles Intl to Copenhagen?

    Yes. Cheapflights offers flight deals from Dulles Intl to Copenhagen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Copenhagen?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Copenhagen (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Copenhagen in June is currently the most expensive (average of $909). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from Dulles Intl to Copenhagen

Discover the top 9 airlines that operate flights from Dulles Intl to Copenhagen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$272Average$388FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$397Average$557FlexibilityNo cancel feeOn-time76%
SWISSCheapest$414Average$658FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$434Average$683FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$475Average$655FlexibilityNo cancel feeOn-time70%
DeltaCheapest$507Average$899FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$526Average$700FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$531Average$784FlexibilityNo cancel feeOn-time69%
KLMCheapest$561Average$864FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.