$329 Cheap Flights from Copenhagen (CPH) to Washington (IAD)

View $329 flight on Tue, May 20, 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Find available prices by choosing your travel dates.

Cheap Flights from Copenhagen to Washington (CPH-IAD)

Prices were available within the past 7 days and start at $329 for one-way flights and $478 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Fri, Aug 15 - Fri, Sep 5
CPH
Copenhagen
IAD
Washington
$478 Roundtrip, found 3 days ago
$478
Roundtrip
found 3 days ago
Select British Airways flight, departing Fri, Aug 15 from Copenhagen to Washington, returning Fri, Sep 5, priced at $478 found 3 days ago
Icelandair
Mon, Oct 27 - Wed, Nov 19
CPH
Copenhagen
IAD
Washington
$481 Roundtrip, found 2 days ago
$481
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Oct 27 from Copenhagen to Washington, returning Wed, Nov 19, priced at $481 found 2 days ago
American Airlines
Fri, Sep 19 - Tue, Sep 23
CPH
Copenhagen
IAD
Washington
$482 Roundtrip, found 2 days ago
$482
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Sep 19 from Copenhagen to Washington, returning Tue, Sep 23, priced at $482 found 2 days ago
Icelandair
Thu, Oct 9 - Mon, Oct 27
CPH
Copenhagen
IAD
Washington
$484 Roundtrip, found 23 hours ago
$484
Roundtrip
found 23 hours ago
Select Icelandair flight, departing Thu, Oct 9 from Copenhagen to Washington, returning Mon, Oct 27, priced at $484 found 23 hours ago
Lufthansa
Wed, Jun 25 - Sat, Jul 12
CPH
Copenhagen
IAD
Washington
$496 Roundtrip, found 3 days ago
$496
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Jun 25 from Copenhagen to Washington, returning Sat, Jul 12, priced at $496 found 3 days ago
TAP Portugal
Wed, Aug 27 - Tue, Sep 2
CPH
Copenhagen
IAD
Washington
$499 Roundtrip, found 5 days ago
$499
Roundtrip
found 5 days ago
Select TAP Portugal flight, departing Wed, Aug 27 from Copenhagen to Washington, returning Tue, Sep 2, priced at $499 found 5 days ago
Swiss International Air Lines
Sun, Jun 15 - Wed, Jul 2
CPH
Copenhagen
IAD
Washington
$502 Roundtrip, found 3 days ago
$502
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Sun, Jun 15 from Copenhagen to Washington, returning Wed, Jul 2, priced at $502 found 3 days ago
United
Fri, Jun 6 - Sun, Jun 22
CPH
Copenhagen
IAD
Washington
$513 Roundtrip, found 4 days ago
$513
Roundtrip
found 4 days ago
Select United flight, departing Fri, Jun 6 from Copenhagen to Washington, returning Sun, Jun 22, priced at $513 found 4 days ago
Air Canada
Mon, May 5 - Tue, Aug 26
CPH
Copenhagen
IAD
Washington
$513 Roundtrip, found 3 days ago
$513
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, May 5 from Copenhagen to Washington, returning Tue, Aug 26, priced at $513 found 3 days ago
Austrian Airlines
Fri, Sep 19 - Tue, Sep 23
CPH
Copenhagen
IAD
Washington
$515 Roundtrip, found 2 days ago
$515
Roundtrip
found 2 days ago
Select Austrian Airlines flight, departing Fri, Sep 19 from Copenhagen to Washington, returning Tue, Sep 23, priced at $515 found 2 days ago
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
$477
Distance
4061 mi

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 August. 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 $329 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 $602 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 May 6 2025 and touching down at IAD. The price was last updated on April 24 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 $2204. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from CPH on June 21 2025. Prices were last updated on April 24 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.

Explore a world of travel with Expedia

*Available to One Key members.