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Denmark

$168+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
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 February 19, 2026.

This Ticket deal was found by Cheapflights users on 2/17. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/297:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Tue 4/142:00 pm
CPH
-
SEA
1 stop15h 40m
Icelandair
Deal found 2/17$405
This Ticket deal was found by Cheapflights users on 2/19. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Sat 4/254:55 pm
CPH
-
SEA
1 stop12h 45m
Icelandair
Deal found 2/19$406
This Super.com deal was found by Cheapflights users on 2/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:40 pm
SEA
-
CPH
1 stop15h 15m
Icelandair
Tue 4/282:00 pm
CPH
-
SEA
1 stop15h 40m
Icelandair
Deal found 2/18$419
This Mytrip deal was found by Cheapflights users on 2/16. 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.
Mon 3/303:30 pm
PDX
-
CPH
1 stop12h 25m
Icelandair
Sun 4/1210:35 pm
CPH
-
PDX
1 stop28h 25m
Icelandair
Deal found 2/16$419
This Super.com deal was found by Cheapflights users on 2/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Sat 4/252:00 pm
CPH
-
SEA
1 stop12h 55m
Icelandair
Deal found 2/17$420
This Super.com deal was found by Cheapflights users on 2/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Sun 4/1910:35 pm
CPH
-
SEA
1 stop31h 05m
Icelandair
Deal found 2/19$422
This oojo deal was found by Cheapflights users on 2/18. 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.
Wed 4/153:40 pm
SEA
-
CPH
1 stop12h 15m
Icelandair
Thu 4/232:00 pm
CPH
-
SEA
1 stop12h 55m
Icelandair
Deal found 2/18$425
This oojo deal was found by Cheapflights users on 2/18. 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 4/133:30 pm
PDX
-
CPH
1 stop15h 25m
Icelandair
Mon 4/272:00 pm
CPH
-
PDX
1 stop13h 00m
Icelandair
Deal found 2/18$425
This oojo deal was found by Cheapflights users on 2/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
-
CPH
1 stop21h 05m
Icelandair
Sat 10/172:00 pm
CPH
-
SEA
1 stop15h 40m
Icelandair
Deal found 2/17$426
This oojo deal was found by Cheapflights users on 2/16. 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 3/307:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Mon 4/1310:35 pm
CPH
-
SEA
1 stop28h 20m
Icelandair
Deal found 2/16$427
This oojo deal was found by Cheapflights users on 2/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:40 pm
SEA
-
CPH
1 stop15h 15m
Icelandair
Tue 10/279:30 pm
CPH
-
SEA
1 stop28h 30m
Icelandair
Deal found 2/17$428
This Super.com deal was found by Cheapflights users on 2/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Mon 5/44:55 pm
CPH
-
SEA
1 stop34h 00m
Icelandair
Deal found 2/18$429

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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$368
(Ticket)

One-way from

$168
(oojo)

Popular in

December

Cheapest in

February

Average price

$464

Good round-trip deal

$574 or less

Good one-way deal

$411 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. 0% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 19, 2026.
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

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Tue 3/3

3:05 pm-1:45 pm

1 stop13h 40m

Aalborg

Sat 3/7

6:00 am-11:35 am

1 stop14h 35m

$467

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 3/30

7:20 am-9:15 am

2 stops16h 55m

Kastrup Copenhagen

Mon 4/13

9:00 am-10:23 pm

1 stop22h 23m

$474

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 5/5

7:15 am-9:15 am

2 stops17h 00m

Kastrup Copenhagen

Thu 5/14

1:55 pm-11:41 pm

1 stop18h 46m

$474

PortlandCopenhagen

PDX - CPH

PDXCPH

Portland

Tue 4/14

1:32 pm-5:05 pm

2 stops18h 33m

Kastrup Copenhagen

Tue 4/28

9:00 am-10:16 pm

1 stop22h 16m

$474

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 4/25

10:40 pm-6:45 am

1 stop23h 05m

Kastrup Copenhagen

Mon 5/4

9:25 am-8:43 pm

2 stops20h 18m

$486

PortlandCopenhagen

PDX - CPH

PDXCPH

Portland

Sun 5/24

11:03 pm-6:45 am

1 stop22h 42m

Kastrup Copenhagen

Sat 5/30

10:10 am-9:00 pm

2 stops19h 50m

$486

PortlandCopenhagen

PDX - CPH

PDXCPH

Portland

Mon 4/13

7:00 am-6:45 am

1 stop14h 45m

Kastrup Copenhagen

Mon 4/27

6:00 am-5:10 pm

2 stops20h 10m

$486

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 8/17

6:40 pm-5:05 pm

1 stop13h 25m

Kastrup Copenhagen

Fri 10/9

9:25 am-4:39 pm

1 stop16h 14m

$491

PortlandCopenhagen

PDX - CPH

PDXCPH

Portland

Mon 3/30

1:55 pm-5:05 pm

2 stops18h 10m

Kastrup Copenhagen

Sun 4/12

2:45 pm-11:10 am

1 stop29h 25m

$496

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 3/5

3:05 pm-4:15 pm

1 stop16h 10m

Kastrup Copenhagen

Sun 3/15

7:25 pm-12:35 pm

1 stop25h 10m

$502

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 53 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 $541). 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.

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 7 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 KLM, Delta, and United Airlines fly from State of Washington to Denmark in about 13h 40m. The time it takes to get you to your destination can typically vary by up to 23h 35m. The distance between State of Washington and Denmark is about 4707 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. Delta flights start at $350 while deals on Lufthansa start at $360 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 $541). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest$385Average$665FlexibilityNo cancel feeOn-time76%
DeltaCheapest$421Average$766FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$421Average$569FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$487Average$618FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$498Average$714FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$506Average$676FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$535Average$718FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$536Average$683FlexibilityNo cancel feeOn-time67%
KLMCheapest$540Average$748FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$571Average$725FlexibilityNo cancel feeOn-time76%

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