$336 Cheap Flights from Copenhagen (CPH) to Washington (IAD)

View $336 flight on Thu, Sep 4, 2025Opens in a new window

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

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Cheap Flights from Copenhagen to Washington (CPH-IAD)

Prices were available within the past 7 days and start at $336 for one-way flights and $452 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sat, Sep 13 - Sun, Sep 14
CPH
Copenhagen
IAD
Washington
$452 Roundtrip, found 5 days ago
$452
Roundtrip
found 5 days ago
Select Icelandair flight, departing Sat, Sep 13 from Copenhagen to Washington, returning Sun, Sep 14, priced at $452 found 5 days ago
TAP Portugal
Thu, Nov 20 - Tue, Dec 2
CPH
Copenhagen
IAD
Washington
$463 Roundtrip, found 5 days ago
$463
Roundtrip
found 5 days ago
Select TAP Portugal flight, departing Thu, Nov 20 from Copenhagen to Washington, returning Tue, Dec 2, priced at $463 found 5 days ago
TAP Portugal
Thu, Jan 22 - Sat, Feb 7
CPH
Copenhagen
IAD
Washington
$465 Roundtrip, found 5 days ago
$465
Roundtrip
found 5 days ago
Select TAP Portugal flight, departing Thu, Jan 22 from Copenhagen to Washington, returning Sat, Feb 7, priced at $465 found 5 days ago
TAP Portugal
Thu, Mar 5 - Sat, Mar 14
CPH
Copenhagen
IAD
Washington
$466 Roundtrip, found 4 days ago
$466
Roundtrip
found 4 days ago
Select TAP Portugal flight, departing Thu, Mar 5 from Copenhagen to Washington, returning Sat, Mar 14, priced at $466 found 4 days ago
Lufthansa
Sat, Sep 13 - Sun, Sep 14
CPH
Copenhagen
IAD
Washington
$487 Roundtrip, found 5 days ago
$487
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Sat, Sep 13 from Copenhagen to Washington, returning Sun, Sep 14, priced at $487 found 5 days ago
American Airlines
Wed, Oct 15 - Mon, Dec 1
CPH
Copenhagen
IAD
Washington
$508 Roundtrip, found 15 hours ago
$508
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Wed, Oct 15 from Copenhagen to Washington, returning Mon, Dec 1, priced at $508 found 15 hours ago
Air Canada
Wed, Oct 15 - Mon, Dec 1
CPH
Copenhagen
IAD
Washington
$508 Roundtrip, found 15 hours ago
$508
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Wed, Oct 15 from Copenhagen to Washington, returning Mon, Dec 1, priced at $508 found 15 hours ago
British Airways
Mon, Apr 20 - Mon, May 11
CPH
Copenhagen
IAD
Washington
$509 Roundtrip, found 21 hours ago
$509
Roundtrip
found 21 hours ago
Select British Airways flight, departing Mon, Apr 20 from Copenhagen to Washington, returning Mon, May 11, priced at $509 found 21 hours ago
United
Sat, Aug 16 - Sat, Sep 20
CPH
Copenhagen
IAD
Washington
$509 Roundtrip, just found
$509
Roundtrip
just found
Select United flight, departing Sat, Aug 16 from Copenhagen to Washington, returning Sat, Sep 20, priced at $509 just found
Swiss International Air Lines
Thu, Oct 9 - Wed, Oct 15
CPH
Copenhagen
IAD
Washington
$517 Roundtrip, found 6 hours ago
$517
Roundtrip
found 6 hours ago
Select Swiss International Air Lines flight, departing Thu, Oct 9 from Copenhagen to Washington, returning Wed, Oct 15, priced at $517 found 6 hours ago

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

March is typically the cheapest month to fly

From $282 - $685 per traveler.

Graph displaying average flight prices per month

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $753
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $753
Flights from Copenhagen (CPH) to Washington (IAD)
Origin airport
Kastrup
Destination airport
Washington Dulles Intl.
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
$452
Distance
4061 mi
Average flight time
8 hours 29 mins

Copenhagen to Washington Flights

The cheapest times to fly from Copenhagen to Washington

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 Copenhagen to Washington are during the month of September. You can find some of the cheapest flights from Copenhagen to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Copenhagen to Washington

Sunday is one of the best days to book for cheap flights from Copenhagen to Washington: 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 Copenhagen to Washington

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 Copenhagen to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $336 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 Copenhagen to Washington 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 Copenhagen to Washington 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 Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD) cost?
You can pick up cheap return flights starting from $545 from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD). 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 CPH on August 12 2025 and touching down at IAD. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from CPH to IAD?
The cheapest flights from CPH to IAD 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 Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
Board a direct flight with SAS and travel straight from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from CPH to IAD?
Currently, the cheapest carrier offering one-way flights from CPH to IAD is SAS. You can take off on this route from $2335. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from CPH on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
On average, Kastrup Airport (CPH) has 6 nonstop flights to Washington Dulles Intl. Airport (IAD) each week. For more choice, use Expedia's filter tool to discover flights with a layover. Squeeze in a visit to another destination or just break up your journey.
What are the most popular departure times for flights from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
The 12 PM departures from CPH to IAD are the busiest. Prices can be higher for these popular slots. If you're looking to save, book during off-peak hours.
What day of the week has the most flights from CPH to IAD?
Jet off on a Monday if you're looking for the biggest selection of flights from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
Hop on the earliest flight at around 12:25PM UTC+1, leaving from Kastrup Airport (CPH). You'll be flying for approximately 9h 15m, arriving at Washington Dulles Intl. Airport (IAD) at approximately 3:40PM UTC-5.
How long does it take to fly from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
The average flight duration from CPH to IAD is 9 hours and 15 minutes, covering a distance of 4,100 mi.
What is the best time to fly from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
To reach Washington Dulles Intl. Airport (IAD) on schedule, opt for a flight that leaves from Kastrup Airport (CPH) 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 Washington from Kastrup Airport (CPH)?
Washington Dulles Intl. Airport (IAD) is the only airport in Washington with direct flights from Kastrup Airport (CPH). Explore your options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from CPH to IAD are typically more expensive. For the cheapest rates, start searching for flights well ahead of time. That said, if you're flexible with your travel plans, you may land a cheap ticket right before your journey.
Is it cheaper to book a CPH to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a CPH to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Kastrup Airport (CPH) to Washington Dulles Intl. Airport (IAD)?
If you booked your CPH to IAD flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.