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Cheap flights from Copenhagen to Seattle from £428

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/12. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Copenhagen to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Copenhagen (CPH) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 June 2025.

Round-trip from

£436

Popular in

July

Cheapest in

February

Average price

£542
United Airlines
  • United Airlines
  • 16/7-1/8
  • 4 total stops
  • 49h 59m total
  • Copenhagen to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£77 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Copenhagen to Seattle

Cheapest flights from Copenhagen to Seattle
Explore the most affordable flight options available from Copenhagen to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Thu 18/1214:25CPH - SEA
2 stops40h 31mUnited Airlines
Mon 5/114:00SEA - CPH
1 stop19h 15mUnited Airlines
Deal found 11/6£428
Mon 22/1207:00CPH - SEA
1 stop14h 10mLufthansa
Fri 2/115:10SEA - CPH
1 stop22h 45mLufthansa
Deal found 11/6£430
Wed 2/708:15CPH - SEA
1 stop16h 35mKLM
Tue 8/717:35SEA - CPH
1 stop15h 45mKLM
Deal found 13/6£461
Tue 16/1212:55CPH - SEA
1 stop13h 05mIcelandair
Wed 7/114:35SEA - CPH
1 stop12h 10mIcelandair
Deal found 11/6£491
Wed 16/723:00CPH - SEA
2 stops29h 14mMultiple Airlines
Mon 4/823:30SEA - CPH
1 stop13h 15mMultiple Airlines
Deal found 11/6£495
Fri 18/714:00CPH - SEA
2 stops28h 19mAmerican Airlines
Mon 4/823:49SEA - CPH
2 stops26h 26mAmerican Airlines
Deal found 11/6£518
Wed 17/1206:00CPH - SEA
2 stops23h 32mDelta
Sun 4/117:20SEA - CPH
1 stop17h 30mDelta
Deal found 11/6£520
Fri 11/709:00CPH - SEA
2 stops23h 55mVirgin Atlantic
Fri 25/721:45SEA - CPH
1 stop23h 45mVirgin Atlantic
Deal found 13/6£531
Sat 19/706:40CPH - SEA
1 stop17h 10mSWISS
Sat 9/816:20SEA - CPH
1 stop22h 05mSWISS
Deal found 11/6£570
Thu 17/707:05CPH - SEA
1 stop13h 30mBritish Airways
Fri 1/813:30SEA - CPH
1 stop25h 05mBritish Airways
Deal found 11/6£618
Fri 18/713:05CPH - SEA
Nonstop9h 45mScandinavian Airlines
Sat 2/816:00SEA - CPH
Nonstop9h 30mScandinavian Airlines
Deal found 11/6£678
Sun 13/721:45CPH - SEA
1 stop27h 15mFinnair
Tue 29/714:10SEA - CPH
2 stops37h 25mFinnair
Deal found 11/6£708

Cheapflights Fare Finder

Customise your flight search to find flights from Copenhagen to Seattle 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 858,174 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from Copenhagen to Seattle that are best for you.

Fly from

Copenhagen

Fly to

Seattle

Route

Depart

Return

Price

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 16/7

06:10-00:59

2 stops27h 49m

Seattle/Tacoma Intl

Fri 1/8

07:00-14:10

2 stops22h 10m

£436

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 2/7

08:15-15:50

1 stop16h 35m

Seattle/Tacoma Intl

Tue 8/7

17:35-18:20

1 stop15h 45m

£461

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 16/7

23:00-19:14

2 stops29h 14m

Seattle/Tacoma Intl

Mon 4/8

23:30-21:45

1 stop13h 15m

£495

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 18/7

14:00-09:19

2 stops28h 19m

Seattle/Tacoma Intl

Mon 4/8

23:49-11:15

2 stops26h 26m

£518

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 17/7

09:25-15:50

1 stop15h 25m

Seattle/Tacoma Intl

Sat 2/8

16:00-10:30

Nonstop9h 30m

£522

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 2/7

06:10-11:55

1 stop14h 45m

Seattle/Tacoma Intl

Tue 8/7

10:00-08:45

2 stops37h 45m

£527

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 11/7

09:00-23:55

2 stops23h 55m

Seattle/Tacoma Intl

Fri 25/7

21:45-06:30

1 stop23h 45m

£531

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 19/7

06:40-14:50

1 stop17h 10m

Seattle/Tacoma Intl

Sat 9/8

16:20-23:25

1 stop22h 05m

£570

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 17/7

07:05-11:35

1 stop13h 30m

Seattle/Tacoma Intl

Fri 1/8

13:30-23:35

1 stop25h 05m

£618

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 18/7

13:05-13:50

Nonstop9h 45m

Seattle/Tacoma Intl

Sat 2/8

16:00-10:30

Nonstop9h 30m

£678

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 21 results
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Best time to book a flight from Copenhagen to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Copenhagen with our price prediction graph.
Estimated return 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 Copenhagen to Seattle

How far ahead should I book a flight from Copenhagen to Seattle?

Use this chart to determine the optimal time to book a return flight from Copenhagen to Seattle. Price data was last updated on 9 June 2025.

The price you pay for your flight from Copenhagen to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Copenhagen to Seattle?

Currently, January is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of £622). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £946). 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 CPH to SEA?

Find hourly flight availability from Copenhagen to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Copenhagen to Seattle as you normally would.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 13 June 2025.
Read reviews from past customers who have flown Asiana Airlines, Delta and KLM from Copenhagen to Seattle. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Asiana Airlines
8.2
Very Good
440 reviews
Check prices

Food

8.0

Boarding

8.4

Comfort

8.0

Overall

8.2

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

IAH - LAX

My flight out of Houston was delayed 3 hours which put my Incheon connection in jeopardy. After 4 calls to United and Asiana I finally understood United had to rebook the flight for me not Asiana. Then the United flight arrived and it was determined I possibly could make the connection. I asked for a wheelchair as I am 80 years old and I knew I couldn’t run for the connection. Long story short there was no wheelchair waiting- no personnel available to help when I arrived LA. I missed my flight and spent two hours in the LA airport trying to get rebooked- locate my luggage and figure out how to get to the Hotel United provided. Fortunately there were no problems with the Asiana flight the next day. They upgraded my seat, had a wheelchair waiting at Incheon and made sure my luggage was taken care of. I understand there can be unavoidable delays but as a customer I need to be assured united will work to fix the problem for me not add to my distress.
Asiana Airlines
8.2
Very Good
440 reviews
Asiana Airlines
8.2
Very Good
440 reviews
Check prices

Food

8.0

Boarding

8.4

Comfort

8.0

Overall

8.2

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

IAH - LAX

My flight out of Houston was delayed 3 hours which put my Incheon connection in jeopardy. After 4 calls to United and Asiana I finally understood United had to rebook the flight for me not Asiana. Then the United flight arrived and it was determined I possibly could make the connection. I asked for a wheelchair as I am 80 years old and I knew I couldn’t run for the connection. Long story short there was no wheelchair waiting- no personnel available to help when I arrived LA. I missed my flight and spent two hours in the LA airport trying to get rebooked- locate my luggage and figure out how to get to the Hotel United provided. Fortunately there were no problems with the Asiana flight the next day. They upgraded my seat, had a wheelchair waiting at Incheon and made sure my luggage was taken care of. I understand there can be unavoidable delays but as a customer I need to be assured united will work to fix the problem for me not add to my distress.
Delta
8.0
Very Good
7,950 reviews
Asiana Airlines
8.2
Very Good
440 reviews
Check prices

Food

8.0

Boarding

8.4

Comfort

8.0

Overall

8.2

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

IAH - LAX

My flight out of Houston was delayed 3 hours which put my Incheon connection in jeopardy. After 4 calls to United and Asiana I finally understood United had to rebook the flight for me not Asiana. Then the United flight arrived and it was determined I possibly could make the connection. I asked for a wheelchair as I am 80 years old and I knew I couldn’t run for the connection. Long story short there was no wheelchair waiting- no personnel available to help when I arrived LA. I missed my flight and spent two hours in the LA airport trying to get rebooked- locate my luggage and figure out how to get to the Hotel United provided. Fortunately there were no problems with the Asiana flight the next day. They upgraded my seat, had a wheelchair waiting at Incheon and made sure my luggage was taken care of. I understand there can be unavoidable delays but as a customer I need to be assured united will work to fix the problem for me not add to my distress.
KLM
7.8
Good
1,358 reviews
Asiana Airlines
8.2
Very Good
440 reviews
Check prices

Food

8.0

Boarding

8.4

Comfort

8.0

Overall

8.2

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

IAH - LAX

My flight out of Houston was delayed 3 hours which put my Incheon connection in jeopardy. After 4 calls to United and Asiana I finally understood United had to rebook the flight for me not Asiana. Then the United flight arrived and it was determined I possibly could make the connection. I asked for a wheelchair as I am 80 years old and I knew I couldn’t run for the connection. Long story short there was no wheelchair waiting- no personnel available to help when I arrived LA. I missed my flight and spent two hours in the LA airport trying to get rebooked- locate my luggage and figure out how to get to the Hotel United provided. Fortunately there were no problems with the Asiana flight the next day. They upgraded my seat, had a wheelchair waiting at Incheon and made sure my luggage was taken care of. I understand there can be unavoidable delays but as a customer I need to be assured united will work to fix the problem for me not add to my distress.
Austrian Airlines
7.6
Good
802 reviews
Asiana Airlines
8.2
Very Good
440 reviews
Check prices

Food

8.0

Boarding

8.4

Comfort

8.0

Overall

8.2

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

IAH - LAX

My flight out of Houston was delayed 3 hours which put my Incheon connection in jeopardy. After 4 calls to United and Asiana I finally understood United had to rebook the flight for me not Asiana. Then the United flight arrived and it was determined I possibly could make the connection. I asked for a wheelchair as I am 80 years old and I knew I couldn’t run for the connection. Long story short there was no wheelchair waiting- no personnel available to help when I arrived LA. I missed my flight and spent two hours in the LA airport trying to get rebooked- locate my luggage and figure out how to get to the Hotel United provided. Fortunately there were no problems with the Asiana flight the next day. They upgraded my seat, had a wheelchair waiting at Incheon and made sure my luggage was taken care of. I understand there can be unavoidable delays but as a customer I need to be assured united will work to fix the problem for me not add to my distress.
Finnair
7.6
Good
1,290 reviews
Asiana Airlines
8.2
Very Good
440 reviews
Check prices

Food

8.0

Boarding

8.4

Comfort

8.0

Overall

8.2

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

IAH - LAX

My flight out of Houston was delayed 3 hours which put my Incheon connection in jeopardy. After 4 calls to United and Asiana I finally understood United had to rebook the flight for me not Asiana. Then the United flight arrived and it was determined I possibly could make the connection. I asked for a wheelchair as I am 80 years old and I knew I couldn’t run for the connection. Long story short there was no wheelchair waiting- no personnel available to help when I arrived LA. I missed my flight and spent two hours in the LA airport trying to get rebooked- locate my luggage and figure out how to get to the Hotel United provided. Fortunately there were no problems with the Asiana flight the next day. They upgraded my seat, had a wheelchair waiting at Incheon and made sure my luggage was taken care of. I understand there can be unavoidable delays but as a customer I need to be assured united will work to fix the problem for me not add to my distress.

Related info for your journey

Find useful and relevant information for your journey from Copenhagen to Seattle. 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 Copenhagen to Seattle flight route?

    The Kastrup Copenhagen to Seattle/Tacoma Intl flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Copenhagen to Seattle round-trip?

    Our cheapest airline available from Copenhagen to Seattle is United Airlines. Our recent data shows that you can find tickets from as low as £436 on this airline. Additional options worth looking into are KLM and American Airlines, starting at £461 and £518 round-trip. United Airlines is 2% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Copenhagen to Seattle one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £521. Turkish Airlines flights start at £570 while deals on Delta start at £642 one-way.

  • Can I find deals for flights from Copenhagen to Seattle that include hotel bookings?

    Yes. In addition to deals on Copenhagen to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Copenhagen to Seattle?

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

  • Can I find deals for business class flights from Copenhagen to Seattle?

    Yes. Cheapflights offers flight deals from Copenhagen to Seattle 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 Copenhagen to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of £622). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell

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