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Denmark

$328+ Cheap flights from Washington to Denmark

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Washington to Denmark

Cheapest flights from Washington to Denmark
Explore the most affordable flight options available from Washington to Denmark. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:35 pmSEA - CPH
2 stops40h 00mUnited Airlines
Mon 1/126:55 amCPH - SEA
2 stops24h 48mUnited Airlines
Deal found 12/16$566
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/303:05 pmSEA - CPH
1 stop16h 30mDelta
Mon 1/129:55 amCPH - SEA
2 stops21h 30mDelta
Deal found 12/16$577
This KLM deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:05 pmSEA - CPH
1 stop16h 10mMultiple Airlines
Sun 1/116:45 amCPH - SEA
1 stop15h 40mMultiple Airlines
Deal found 12/17$662
This KLM deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:25 pmPDX - CPH
1 stop20h 30mKLM
Sun 12/285:30 pmCPH - PDX
1 stop26h 55mKLM
Deal found 12/16$710
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:59 pmGEG - CPH
2 stops29h 06mUnited Airlines
Mon 1/121:10 pmCPH - GEG
2 stops55h 29mUnited Airlines
Deal found 12/16$724
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:00 amSEA - CPH
2 stops21h 45mUnited Airlines
Thu 12/259:50 amCPH - SEA
2 stops20h 17mUnited Airlines
Deal found 12/17$729
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:05 pmSEA - CPH
1 stop16h 30mDelta
Sun 1/116:00 amCPH - SEA
2 stops21h 29mDelta
Deal found 12/16$739
This Mytrip deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:35 pmSEA - CPH
2 stops17h 05mMultiple Airlines
Mon 1/128:05 pmCPH - SEA
3 stops29h 55mMultiple Airlines
Deal found 12/16$743
This KAYAK deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:35 pmSEA - CPH
2 stops26h 50mSWISS
Sun 1/117:55 pmCPH - SEA
2 stops35h 48mSWISS
Deal found 12/17$832
This Cheapflightsfares deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:10 amPDX - CPH
2 stops21h 35mLufthansa
Fri 12/2610:10 amCPH - PDX
2 stops21h 30mLufthansa
Deal found 12/17$1,007
This oojo deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2211:16 amSEA - CPH
2 stops24h 19mIcelandair
Mon 1/268:50 pmCPH - SEA
1 stop29h 10mIcelandair
Deal found 12/16$1,023
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:25 pmPDX - CPH
1 stop18h 10mDelta
Sun 12/286:00 amCPH - PDX
2 stops26h 59mDelta
Deal found 12/16$1,031

Find flight deals from Washington to Denmark

Keep the following information in mind while searching for Washington to Denmark flight deals. Data was last updated December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$489
(oojo)

One-way from

$328
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$752

Good round-trip deal

$617 or less

Good one-way deal

$407 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Kastrup Copenhagen flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kastrup Copenhagen flights.
Search Deals
From Washington to Denmark
Search Deals
One-way flight from Washington to Denmark
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington to Denmark.
Search Deals
Price to beat on a one-way flight from Washington to Denmark.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Denmark that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Washington to Denmark that are best for you.

Fly from

Washington

Fly to

Denmark

Route

Depart

Return

Price

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 4/29

7:00 am-12:05 pm

2 stops20h 05m

Billund

Wed 5/6

12:10 pm-11:35 am

1 stop32h 25m

$489

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

3:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Thu 4/2

2:00 pm-8:40 pm

1 stop15h 40m

$502

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

3:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Sun 3/29

5:15 pm-8:40 pm

1 stop12h 25m

$502

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 4/29

7:00 am-12:05 pm

2 stops20h 05m

Billund

Wed 5/6

12:10 pm-11:05 pm

2 stops19h 55m

$508

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 4/12

2:01 pm-8:35 pm

2 stops21h 34m

Billund

Wed 4/22

12:10 pm-11:05 pm

2 stops19h 55m

$509

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Thu 1/15

6:50 pm-12:20 pm

1 stop32h 30m

Billund

Mon 1/19

1:10 pm-11:30 am

1 stop31h 20m

$511

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-11:00 pm

1 stop23h 45m

Billund

Sun 3/1

6:00 am-11:35 am

1 stop14h 35m

$524

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 3/14

7:50 pm-1:30 pm

1 stop33h 40m

Kastrup Copenhagen

Wed 4/1

7:20 am-11:35 am

1 stop13h 15m

$524

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 3/14

4:00 pm-1:40 pm

1 stop13h 40m

Kastrup Copenhagen

Thu 4/2

9:00 am-7:48 pm

1 stop19h 48m

$527

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

3:35 pm-7:50 pm

1 stop20h 15m

Kastrup Copenhagen

Mon 3/30

10:35 pm-8:40 pm

1 stop31h 05m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 50 results
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Best time to book a flight from Washington to Denmark

Have a flexible travel schedule? Discover the best time to fly to Denmark from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Denmark

What is the cheapest month to book a flight from State of Washington to Denmark?

Currently, November is the cheapest month in which you can book a flight from State of Washington to Denmark (average of $230). Flying from State of Washington to Denmark in June is currently the most expensive (average of $542). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to DK?

Find hourly flight availability from Washington to Denmark. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from State of Washington to Denmark is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 23% on airfare.

What is the cheapest day to fly from State of Washington to Denmark?

Use this chart to determine the cheapest time to fly round-trip from Washington to Denmark. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Denmark flight should consider departing on Monday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Washington to Denmark. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this State of Washington to Denmark flight route?

    The Washington to Denmark flight path was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from State of Washington to Denmark?

    Airlines like British Airways, Icelandair, and Delta fly from State of Washington to Denmark in about 12h 10m. The time it takes to get you to your destination can typically vary by up to 7h 55m. The distance between State of Washington and Denmark is about 4850 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Denmark one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $194. Lufthansa flights start at $335 while deals on Delta start at $350 one-way.

  • Can I find deals for flights from Washington to Denmark that include hotel bookings?

    Yes. In addition to deals on Washington to Denmark flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Denmark?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Denmark.

  • Can I find deals for business class flights from Washington to Denmark?

    Yes. Cheapflights offers flight deals from Washington to Denmark by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Denmark?

    Currently, November is the cheapest month in which you can book a flight from State of Washington to Denmark (average of $230). Flying from State of Washington to Denmark in June is currently the most expensive (average of $542). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to Denmark

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Denmark

Discover the top 10 airlines that operate flights from Washington to Denmark. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$418Average$619FlexibilityNo cancel feeOn-time77%
DeltaCheapest$421Average$777FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$423Average$578FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$498Average$695FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$535Average$714FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$535Average$726FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$536Average$683FlexibilityNo cancel feeOn-time67%
KLMCheapest$540Average$685FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$544Average$694FlexibilityNo cancel feeOn-time70%
FinnairCheapest$580Average$744FlexibilityNo cancel feeOn-time76%

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