Copenhagen

$138+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CPH
Oct 17 — Oct 241
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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 Sunday 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 September 17, 2025.

Round-trip from

$481
(Icelandair)

One-way from

$138
(Ticket)

Popular in

June

Cheapest in

October

Average price

$555

Good round-trip deal

$493 or less

Good one-way deal

$374 or less
From Washington, D.C. Dulles Intl to Kastrup Copenhagen
One-way flight from Washington, D.C. Dulles Intl to Kastrup Copenhagen
Highest demand for flights based on searches. 16% potential increase in price ($122 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Kastrup Copenhagen.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Kastrup Copenhagen.

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 September 17, 2025.

This Icelandair deal was found by Cheapflights users on 9/15. 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.
Thu 10/28:30 pmIAD - CPH
1 stop13h 15mIcelandair
Mon 10/610:35 pmCPH - IAD
1 stop26h 45mIcelandair
Deal found 9/15$481
This CrystalTravel deal was found by Cheapflights users on 9/16. 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.
Mon 11/37:40 pmIAD - CPH
1 stop18h 55mIcelandair
Tue 11/1112:55 pmCPH - IAD
1 stop11h 35mIcelandair
Deal found 9/16$483
This Icelandair deal was found by Cheapflights users on 9/16. 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 10/78:30 pmIAD - CPH
1 stop13h 15mIcelandair
Sun 10/269:30 pmCPH - IAD
1 stop27h 00mIcelandair
Deal found 9/16$485
This Icelandair deal was found by Cheapflights users on 9/15. 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 9/288:30 pmIAD - CPH
1 stop19h 45mIcelandair
Wed 10/84:45 pmCPH - IAD
1 stop11h 25mIcelandair
Deal found 9/15$486
This Icelandair deal was found by Cheapflights users on 9/15. 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 9/288:30 pmIAD - CPH
1 stop19h 45mIcelandair
Mon 10/610:35 pmCPH - IAD
1 stop26h 45mIcelandair
Deal found 9/15$488
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:30 pmIAD - CPH
1 stop18h 05mTAP AIR PORTUGAL
Mon 11/1712:40 pmCPH - IAD
1 stop31h 55mTAP AIR PORTUGAL
Deal found 9/17$492
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:09 pmIAD - CPH
2 stops17h 06mScandinavian Airlines
Tue 11/1112:55 pmCPH - IAD
1 stop12h 13mScandinavian Airlines
Deal found 9/16$493
This Travelis deal was found by Cheapflights users on 9/17. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/108:30 pmIAD - CPH
Nonstop8h 05mScandinavian Airlines
Mon 11/171:55 pmCPH - IAD
Nonstop9h 20mScandinavian Airlines
Deal found 9/17$494
This Icelandair deal was found by Cheapflights users on 9/16. 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 9/168:30 pmIAD - CPH
1 stop19h 45mIcelandair
Wed 9/2410:35 pmCPH - IAD
1 stop26h 45mIcelandair
Deal found 9/16$495
This AirNGo deal was found by Cheapflights users on 9/15. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:45 amIAD - CPH
2 stops17h 15mAir Canada
Mon 11/172:20 pmCPH - IAD
2 stops27h 25mAir Canada
Deal found 9/15$497
This Scandinavian Airlines deal was found by Cheapflights users on 9/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:09 pmIAD - CPH
1 stop14h 01mScandinavian Airlines
Sat 11/13:30 pmCPH - IAD
Nonstop9h 20mScandinavian Airlines
Deal found 9/16$498
This lastminute.com deal was found by Cheapflights users on 9/16. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:30 pmIAD - CPH
Nonstop8h 05mScandinavian Airlines
Wed 11/51:55 pmCPH - IAD
Nonstop9h 20mScandinavian Airlines
Deal found 9/16$499

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 September 17, 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

Fri 10/3

11:15 pm-3:45 pm

1 stop10h 30m

Kastrup Copenhagen

Wed 10/22

10:35 pm-7:20 pm

1 stop26h 45m

$481

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Mon 9/29

8:30 pm-12:55 pm

1 stop10h 25m

Kastrup Copenhagen

Wed 10/8

4:45 pm-10:10 pm

1 stop11h 25m

$486

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Tue 10/28

12:09 pm-7:10 am

1 stop14h 01m

Kastrup Copenhagen

Sat 11/1

3:30 pm-7:50 pm

Nonstop9h 20m

$498

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Sat 2/28

12:30 pm-7:10 am

1 stop12h 40m

Kastrup Copenhagen

Sat 3/7

3:30 pm-6:50 pm

Nonstop9h 20m

$512

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Sun 11/2

10:55 pm-5:35 pm

1 stop12h 40m

Kastrup Copenhagen

Wed 11/12

8:55 am-3:35 pm

1 stop12h 40m

$518

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Sat 3/7

8:30 pm-10:35 am

Nonstop8h 05m

Kastrup Copenhagen

Wed 3/18

1:55 pm-6:15 pm

Nonstop9h 20m

$521

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Thu 3/5

8:30 pm-10:35 am

Nonstop8h 05m

Kastrup Copenhagen

Sat 3/14

3:30 pm-7:50 pm

Nonstop9h 20m

$521

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Wed 11/26

10:30 pm-5:45 pm

1 stop13h 15m

Kastrup Copenhagen

Thu 12/4

6:00 am-3:15 pm

1 stop15h 15m

$527

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Wed 11/26

10:30 pm-5:45 pm

1 stop13h 15m

Kastrup Copenhagen

Wed 12/3

12:40 pm-9:00 pm

1 stop14h 20m

$527

Washington, D.C.Copenhagen

IAD - CPH

IADCPH

Washington, D.C. Dulles Intl

Sat 12/13

7:40 pm-11:45 am

1 stop10h 05m

Kastrup Copenhagen

Wed 12/24

12:55 pm-6:30 pm

1 stop11h 35m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 21 results
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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 September 12, 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 $911). 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 September 17, 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 September 17, 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.

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

Crew

8.0

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

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

Crew

8.0

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

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

Crew

8.0

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

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

Crew

8.0

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

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

Crew

8.0

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

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

Crew

8.0

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, Scandinavian Airlines, and United Airlines can get you from Washington, D.C. Dulles Intl Airport to Copenhagen in just under 10h 30m. Your travel time can differ by up to 3h 31m. The distance between Washington, D.C. Dulles Intl Airport and Copenhagen is about 4060 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    PLAY, at $270, 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 Scandinavian Airlines. These flights start at 56% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Copenhagen?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Copenhagen are Scandinavian Airlines (88%), Delta (88%) and Air France (75%).

  • 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 $347. On average you can expect to pay $1,633. The most popular route, (Washington, D.C. Dulles Intl - Kastrup Copenhagen), can usually be booked for $398.

  • 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 $911). 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

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$270Average$377FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$396Average$552FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$438Average$690FlexibilityNo cancel feeOn-time77%
SWISSCheapest$480Average$670FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$491Average$668FlexibilityNo cancel feeOn-time70%
DeltaCheapest$507Average$899FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$531Average$775FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$536Average$705FlexibilityNo cancel feeOn-time76%
KLMCheapest$588Average$864FlexibilityNo cancel feeOn-time75%

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