$327 Cheap Flights from Copenhagen (CPH) to Seattle (SEA)

View $327 flight on Wed, Apr 29, 2026Opens in a new window

Popular airlines from Copenhagen Airport, Kastrup (CPH) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Copenhagen to Seattle (CPH-SEA)

Prices were available within the past 7 days and start at $327 for one-way flights and $514 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sat, Jan 24 - Wed, Jan 28
CPH
Copenhagen
SEA
Seattle
$514 Roundtrip, found 3 hours ago
$514
Roundtrip
found 3 hours ago
Select Icelandair flight, departing Sat, Jan 24 from Copenhagen to Seattle, returning Wed, Jan 28, priced at $514 found 3 hours ago
Icelandair
Sat, Feb 7 - Tue, Feb 17
CPH
Copenhagen
SEA
Seattle
$516 Roundtrip, found 2 days ago
$516
Roundtrip
found 2 days ago
Select Icelandair flight, departing Sat, Feb 7 from Copenhagen to Seattle, returning Tue, Feb 17, priced at $516 found 2 days ago
Icelandair
Sun, Jan 25 - Sat, Jan 31
CPH
Copenhagen
SEA
Seattle
$516 Roundtrip, found 3 hours ago
$516
Roundtrip
found 3 hours ago
Select Icelandair flight, departing Sun, Jan 25 from Copenhagen to Seattle, returning Sat, Jan 31, priced at $516 found 3 hours ago
Icelandair
Sun, Apr 5 - Sun, Apr 12
CPH
Copenhagen
SEA
Seattle
$518 Roundtrip, found 3 days ago
$518
Roundtrip
found 3 days ago
Select Icelandair flight, departing Sun, Apr 5 from Copenhagen to Seattle, returning Sun, Apr 12, priced at $518 found 3 days ago
British Airways
Sun, May 24 - Mon, Jun 8
CPH
Copenhagen
SEA
Seattle
$520 Roundtrip, found 4 hours ago
$520
Roundtrip
found 4 hours ago
Select British Airways flight, departing Sun, May 24 from Copenhagen to Seattle, returning Mon, Jun 8, priced at $520 found 4 hours ago
American Airlines
Mon, May 25 - Tue, Jun 2
CPH
Copenhagen
SEA
Seattle
$528 Roundtrip, found 1 day ago
$528
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, May 25 from Copenhagen to Seattle, returning Tue, Jun 2, priced at $528 found 1 day ago
Delta
Mon, Nov 17 - Tue, Dec 2
CPH
Copenhagen
SEA
Seattle
$563 Roundtrip, found 20 hours ago
$563
Roundtrip
found 20 hours ago
Select Delta flight, departing Mon, Nov 17 from Copenhagen to Seattle, returning Tue, Dec 2, priced at $563 found 20 hours ago
Lufthansa
Thu, Apr 2 - Sun, Apr 12
CPH
Copenhagen
SEA
Seattle
$583 Roundtrip, found 5 days ago
$583
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Apr 2 from Copenhagen to Seattle, returning Sun, Apr 12, priced at $583 found 5 days ago
Air Canada
Fri, May 29 - Tue, Jul 7
CPH
Copenhagen
SEA
Seattle
$592 Roundtrip, found 6 days ago
$592
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, May 29 from Copenhagen to Seattle, returning Tue, Jul 7, priced at $592 found 6 days ago
United
Fri, Apr 10 - Sun, Apr 19
CPH
Copenhagen
SEA
Seattle
$626 Roundtrip, found 1 day ago
$626
Roundtrip
found 1 day ago
Select United flight, departing Fri, Apr 10 from Copenhagen to Seattle, returning Sun, Apr 19, priced at $626 found 1 day ago

Find the cheapest month to fly from Copenhagen (CPH) to Seattle (SEA)

January is typically the cheapest month to fly

From $427 - $1,130 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $563
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $563
Flights from Copenhagen (CPH) to Seattle (SEA)
Origin airport
Kastrup
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$514
Distance
4852 mi

Copenhagen to Seattle Flights

The cheapest times to fly from Copenhagen to Seattle

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

 

The best time to book a flight from Copenhagen to Seattle

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

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 Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $327 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 Seattle 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 Seattle 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 Seattle - Tacoma Intl. Airport (SEA) cost?
Grab a cheap one-way flight from $327 or cheap return flight from $514 from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA)?
January is the least expensive month to fly from CPH to SEA. Traveling during an off-peak travel window is often the key to finding a great deal.
What is the cheapest airline that flies from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from CPH to SEA. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA)?
Nonstop flights from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CPH to SEA?
You'll typically find Tuesday the quietest day for flights, while Fridays are often 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 Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA) route, aim to fly before 3 PM. Flights 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 Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until just before your trip to book a ticket from CPH to SEA generally means paying more. While you may come across some last-minute discounts, there's no guarantee. Allow some flexibility in your schedule to maximize your chances of snagging a bargain.
Is it cheaper to book a CPH to SEA flight and hotel package?
Booking a CPH to SEA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our wide range of accommodations and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you can reschedule or cancel your CPH to SEA flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want more details, go to our Customer Service portal.

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*Available to One Key members.