$165 Cheap Flights from Washington (IAD) to Copenhagen (CPH)

View $165 flight on Mon, Aug 18, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Copenhagen Airport, Kastrup (CPH)

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Cheap Flights from Washington to Copenhagen (IAD-CPH)

Prices were available within the past 7 days and start at $165 for one-way flights and $440 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Tue, Aug 12 - Thu, Sep 4
IAD
Washington
CPH
Copenhagen
$440 Roundtrip, found 3 days ago
$440
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Tue, Aug 12 from Washington to Copenhagen, returning Thu, Sep 4, priced at $440 found 3 days ago
TAP Portugal
Mon, Aug 18 - Mon, Aug 25
IAD
Washington
CPH
Copenhagen
$441 Roundtrip, just found
$441
Roundtrip
just found
Select TAP Portugal flight, departing Mon, Aug 18 from Washington to Copenhagen, returning Mon, Aug 25, priced at $441 just found
TAP Portugal
Wed, Apr 8 - Mon, Apr 13
IAD
Washington
CPH
Copenhagen
$443 Roundtrip, found 3 days ago
$443
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Wed, Apr 8 from Washington to Copenhagen, returning Mon, Apr 13, priced at $443 found 3 days ago
Icelandair
Fri, Oct 10 - Sun, Oct 26
IAD
Washington
CPH
Copenhagen
$444 Roundtrip, found 5 days ago
$444
Roundtrip
found 5 days ago
Select Icelandair flight, departing Fri, Oct 10 from Washington to Copenhagen, returning Sun, Oct 26, priced at $444 found 5 days ago
Scandinavian Airlines
Thu, Oct 23 - Mon, Oct 27
IAD
Washington
CPH
Copenhagen
$450 Roundtrip, found 1 hour ago
$450
Roundtrip
found 1 hour ago
Select Scandinavian Airlines flight, departing Thu, Oct 23 from Washington to Copenhagen, returning Mon, Oct 27, priced at $450 found 1 hour ago
British Airways
Sun, Aug 17 - Fri, Aug 22
IAD
Washington
CPH
Copenhagen
$504 Roundtrip, found 3 days ago
$504
Roundtrip
found 3 days ago
Select British Airways flight, departing Sun, Aug 17 from Washington to Copenhagen, returning Fri, Aug 22, priced at $504 found 3 days ago
Iberia
Tue, Nov 4 - Wed, Nov 12
IAD
Washington
CPH
Copenhagen
$511 Roundtrip, found 6 days ago
$511
Roundtrip
found 6 days ago
Select Iberia flight, departing Tue, Nov 4 from Washington to Copenhagen, returning Wed, Nov 12, priced at $511 found 6 days ago
Swiss International Air Lines
Sun, Nov 23 - Mon, Dec 1
IAD
Washington
CPH
Copenhagen
$512 Roundtrip, found 1 day ago
$512
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Sun, Nov 23 from Washington to Copenhagen, returning Mon, Dec 1, priced at $512 found 1 day ago
Air Canada
Thu, Aug 14 - Mon, Dec 15
IAD
Washington
CPH
Copenhagen
$517 Roundtrip, found 1 day ago
$517
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Aug 14 from Washington to Copenhagen, returning Mon, Dec 15, priced at $517 found 1 day ago
Austrian Airlines
Wed, Dec 10 - Tue, Dec 16
IAD
Washington
CPH
Copenhagen
$523 Roundtrip, found 10 hours ago
$523
Roundtrip
found 10 hours ago
Select Austrian Airlines flight, departing Wed, Dec 10 from Washington to Copenhagen, returning Tue, Dec 16, priced at $523 found 10 hours ago

Find the cheapest month to fly from Washington (IAD) to Copenhagen (CPH)

March is typically the cheapest month to fly

From $271 - $696 per traveler.

Graph displaying average flight prices per month

Flights from Washington (IAD) to Copenhagen (CPH)
Origin airport
Washington Dulles Intl.
Destination airport
Kastrup
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$440
Distance
4061 mi
Average flight time
7 hours 50 mins

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 $165 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 Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH) cost?
Book cheap return fares starting from $489 from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a SAS flight leaving IAD on July 15 2025 and touching down at CPH. The price was last updated on June 30 2025 and has not changed since.
What is the cheapest month to fly from IAD to CPH?
The cheapest flights from IAD 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 Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
You can fly nonstop from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH) on a SAS flight.
What is the cheapest airline that flies from IAD to CPH?
Jet off from IAD to CPH with SAS. This airline currently offers the cheapest one-way ticket for this route, starting at $2248. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAD on September 17 2025. Prices were last updated on June 30 2025 and have not changed since.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
On average, Washington Dulles Intl. Airport (IAD) has 6 nonstop flights to Kastrup Airport (CPH) each week. If you're looking for more options, use Expedia's filters to discover flights with a layover. Squeeze in a quick visit to another city or simply break up your trip.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
The 5 PM departures from IAD to CPH are the top choice for many travelers. Greater demand means you'll likely pay more for these departures. If you want to save on your fare, pick a less crowded time to fly.
What day of the week has the most flights from IAD to CPH?
If you depart on a Friday, you'll get the widest range of options for flights from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH).
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
Washington Dulles Intl. Airport (IAD)'s first flight to Kastrup Airport (CPH) is at approximately 5:10PM UTC-5. With a total flight time of 8h 5m, you'll land at around 7:15AM UTC+1.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
The average flight time from IAD to CPH is 8 hours and 5 minutes, covering a total distance of 4,100 mi.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
To arrive at Kastrup Airport (CPH) on time, select a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Copenhagen from Washington Dulles Intl. Airport (IAD)?
Explore your flight options from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH). This is the only airport in Copenhagen you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH) last-minute?
Booking your ticket from IAD to CPH shortly before your getaway is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an IAD to CPH flight and hotel package?
Booking an IAD to CPH flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Kastrup Airport (CPH)?
In most cases, you're able to cancel or reschedule your IAD to CPH flight. However, additional charges may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want further information, go to our Customer Service portal.

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