$404 Cheap Flights from Washington (DCA) to Copenhagen (CPH)

View $404 flight on Tue, Aug 5, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Copenhagen (DCA-CPH)

Prices were available within the past 7 days and start at $404 for one-way flights and $559 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 12 - Wed, Aug 20
DCA
Washington
CPH
Copenhagen
$559 Roundtrip, found 5 days ago
$559
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 12 from Washington to Copenhagen, returning Wed, Aug 20, priced at $559 found 5 days ago
Air Canada
Sun, Aug 10 - Wed, Aug 20
DCA
Washington
CPH
Copenhagen
$560 Roundtrip, found 5 hours ago
$560
Roundtrip
found 5 hours ago
Select Air Canada flight, departing Sun, Aug 10 from Washington to Copenhagen, returning Wed, Aug 20, priced at $560 found 5 hours ago
United
Tue, Aug 12 - Wed, Aug 20
DCA
Washington
CPH
Copenhagen
$564 Roundtrip, found 5 days ago
$564
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 12 from Washington to Copenhagen, returning Wed, Aug 20, priced at $564 found 5 days ago
Air Canada
Tue, Aug 12 - Fri, Aug 22
DCA
Washington
CPH
Copenhagen
$566 Roundtrip, found 3 days ago
$566
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Aug 12 from Washington to Copenhagen, returning Fri, Aug 22, priced at $566 found 3 days ago
Air Canada
Tue, Aug 19 - Tue, Aug 26
DCA
Washington
CPH
Copenhagen
$567 Roundtrip, found 13 hours ago
$567
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Tue, Aug 19 from Washington to Copenhagen, returning Tue, Aug 26, priced at $567 found 13 hours ago
United
Sun, Aug 10 - Tue, Aug 19
DCA
Washington
CPH
Copenhagen
$570 Roundtrip, found 6 days ago
$570
Roundtrip
found 6 days ago
Select United flight, departing Sun, Aug 10 from Washington to Copenhagen, returning Tue, Aug 19, priced at $570 found 6 days ago
United
Mon, Aug 4 - Tue, Aug 19
DCA
Washington
CPH
Copenhagen
$573 Roundtrip, found 14 hours ago
$573
Roundtrip
found 14 hours ago
Select United flight, departing Mon, Aug 4 from Washington to Copenhagen, returning Tue, Aug 19, priced at $573 found 14 hours ago
Virgin Atlantic
Wed, Aug 13 - Wed, Aug 20
DCA
Washington
CPH
Copenhagen
$574 Roundtrip, found 3 days ago
$574
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Wed, Aug 13 from Washington to Copenhagen, returning Wed, Aug 20, priced at $574 found 3 days ago
Delta
Mon, Aug 11 - Thu, Aug 21
DCA
Washington
CPH
Copenhagen
$575 Roundtrip, found 1 day ago
$575
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Aug 11 from Washington to Copenhagen, returning Thu, Aug 21, priced at $575 found 1 day ago
British Airways
Mon, Aug 11 - Tue, Aug 19
DCA
Washington
CPH
Copenhagen
$601 Roundtrip, found 5 days ago
$601
Roundtrip
found 5 days ago
Select British Airways flight, departing Mon, Aug 11 from Washington to Copenhagen, returning Tue, Aug 19, priced at $601 found 5 days ago
Flights from Washington (DCA) to Copenhagen (CPH)
Origin airport
Ronald Reagan Washington National
Destination airport
Kastrup
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Scandinavian Airlines, TAP Portugal, United, Virgin Atlantic
Roundtrip price
$559
Distance
4052 mi

Washington to Copenhagen Flights

The cheapest times to fly from Washington to Copenhagen

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Copenhagen are during the month of August. You can find some of the cheapest flights from Washington to Copenhagen with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to Copenhagen

Sunday is one of the best days to book for cheap flights from Washington to Copenhagen: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to Copenhagen

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Copenhagen in 2025. You can also book with separate airlines for your outbound and return journeys, from $404 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Copenhagen flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Copenhagen airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH) cost?
Discover the latest flight deals from DCA to CPH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DCA to CPH?
The cheapest flights from DCA to CPH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH)?
While Washington, DC (DCA-Ronald Reagan Washington National) doesn’t have any direct flights to Kastrup Airport (CPH), other airports have nonstop options. Traveling from Washington Dulles Intl. Airport (IAD) will get you to Copenhagen without any detours.
What is the cheapest airline that flies from DCA to CPH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from DCA to CPH. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH)?
Nonstop flights from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from DCA to CPH?
You’ll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH)?
To avoid potential delays on the Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH) last-minute?
Waiting until just before your departure to book a flight from DCA to CPH generally means paying more. While you might find some last-minute discounts, there’s no guarantee. Be flexible with your travel plans to boost your chances of landing a bargain.
Is it cheaper to book a DCA to CPH flight and hotel package?
Compared with arranging flights and hotels separately, booking a DCA to CPH flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of planning your trip. Just secure your flights and select from our extensive range of stays, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Kastrup Airport (CPH)?
If you reserved your DCA to CPH flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.