$384 Find Cheap Flights from Denmark to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from Denmark to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denmark to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denmark to Seattle

Thu, Oct 23 - Mon, Oct 27
Delta Logo
11:50 am - 8:50 pmCPH-SEA
18h 00m2 stops
Delta Logo
11:15 am - 1:10 pmSEA-CPH
17h 55m2 stops
$500Delta
Find Deal
Tue, Aug 12 - Thu, Aug 28
British Airways Logo
2:00 pm - 10:26 pmCPH-SEA
17h 26m1 stop
British Airways Logo
1:30 pm - 11:30 pmSEA-CPH
25h 00m1 stop
$501British Airways
Find Deal
Tue, Aug 12 - Thu, Aug 28
British Airways Logo
2:00 pm - 10:26 pmCPH-SEA
17h 26m1 stop
British Airways Logo
1:30 pm - 11:30 pmSEA-CPH
25h 00m1 stop
$502British Airways
Find Deal
Tue, Aug 12 - Thu, Aug 28
American Airlines Logo
2:00 pm - 11:40 pmCPH-SEA
18h 40m2 stops
American Airlines Logo
9:12 am - 11:15 amSEA-CPH
17h 03m2 stops
$524American Airlines
Find Deal
Tue, Aug 12 - Thu, Aug 28
American Airlines Logo
2:00 pm - 11:40 pmCPH-SEA
18h 40m2 stops
American Airlines Logo
9:12 am - 11:15 amSEA-CPH
17h 03m2 stops
$525American Airlines
Find Deal
Fri, Jun 27 - Tue, Jul 1
KLM Logo
7:35 pm - 11:40 amCPH-SEA
25h 05m1 stop
KLM Logo
5:35 pm - 6:20 pmSEA-CPH
15h 45m1 stop
$581KLM
Find Deal
Sun, Jun 29 - Wed, Jul 9
Lufthansa Logo
6:05 am - 12:25 pmCPH-SEA
15h 20m1 stop
Lufthansa Logo
6:50 pm - 8:05 amSEA-CPH
28h 15m1 stop
$715Lufthansa
Find Deal
Wed, Jul 2 - Tue, Jul 8
Lufthansa Logo
6:10 am - 11:55 amCPH-SEA
14h 45m1 stop
Lufthansa Logo
10:00 am - 8:45 amSEA-CPH
37h 45m2 stops
$716Lufthansa
Find Deal
Fri, Aug 1 - Sun, Aug 17
Scandinavian Airlines Logo
1:05 pm - 1:50 pmCPH-SEA
9h 45mnonstop
Scandinavian Airlines Logo
4:00 pm - 10:30 amSEA-CPH
9h 30mnonstop
$731Scandinavian Airlines
Find Deal
Fri, Aug 1 - Sun, Aug 17
Scandinavian Airlines Logo
1:05 pm - 1:50 pmCPH-SEA
9h 45mnonstop
Scandinavian Airlines Logo
4:00 pm - 10:30 amSEA-CPH
9h 30mnonstop
$754Scandinavian Airlines
Find Deal
Useful Info

KAYAK's insights & trends for flights to Seattle

Get data-powered insights and trends for flights to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Seattle is February, where tickets cost $455 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Denmark is $868 and $737 respectively. For one-way flights, the best month to travel is February with an average price of $455.

What is a good deal for flights to Seattle?

If you’re looking for cheap airfare to Seattle, 25% of our users found tickets to Seattle for the following prices or less: From Copenhagen $777 round-trip.

How far in advance should I book a flight to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.


Good to know

Low seasonMarch
High seasonJuly
Cheapest flight$384
Best time to beat the crowds but there is an average 174% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Copenhagen to Seattle

FAQs - booking Seattle flights

  • How far is Seattle/Tacoma Intl Airport from central Seattle?

    You’ll need to travel 11 miles to reach the Seattle city center from Seattle/Tacoma Intl Airport.

  • What is the name of Seattle’s airport?

    All flights to Seattle land at Seattle/Tacoma Intl Airport. The airport code is SEA,and it can also be referred to as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

  • How much is a flight to Seattle?

    On average, a flight to Seattle costs $972. The cheapest price found on KAYAK in the last 2 weeks cost $632 and departed from Kastrup Copenhagen Airport.

  • What is the cheapest day to fly to Seattle?

    Based on KAYAK data, the cheapest day to fly to Seattle is Tuesday where round-trip tickets can be as cheap as $633. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $1,055 on average.

  • How does KAYAK find such low prices on flights to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Seattle?

    The cheapest time of day to fly to Seattle is generally at night, when round-trip flights cost $563 on average. The most expensive time of day to fly to Seattle is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,049.

  • How many direct flights to Seattle are there each week?

    Each week there are around 4,366 direct flights from within Denmark to Seattle. The most common day for departures is Friday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Seattle

  • Looking for cheap airfare to Seattle? 25% of our users found round-trip tickets to Seattle for the following prices or less: From Copenhagen $822
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.

Top 5 airlines serving from Denmark to Seattle

 
See real verified KAYAK customer reviews for airlines flying to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Denmark to Seattle. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1358 reviews
7.1Entertainment
7.8Boarding
7.2Food
8.4Crew
7.7Comfort
Airline reviews

Klm start boarding while somw air issue in the plan

8.0 ExcellentA, Jun 2025AMS - YYZ
Read more KLM reviews

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Standard short hop flight. No food, no entertainment. Just get in, get something to drink, and try to be as comfortable as you can for an hour.

Travelling coach, comfort is all in one's perspective. Movie choices were great. Food was OK. Flight crew were pleasant. Tip: If they come through asking if you want tea or coffee, do not ask for water. They get miffed. So use the call button after they pass through.

They cancelled our flight home less than 24 hours before it was supposed to leave. It partially ruined our last day because I was on the phone trying to get 5 people home and the stress that it causes. We still arrived at the airport with no definite flight plans. The actual flight was good but my kids really misses the kids meals I had ordered for them which obviously didn’t make it to the new flight.

Very unfriendly approach to me when you rescheduled my return flight due to your delay. No help to address my health concerns because I am diabetics and had orthopedic problems. No clear explanation where to clear customs. I had poor customer service

Maybe more diverse entertainment. Although the inflight cameras were amazing 10/10

Boarding was chaotic and the flight left late but arrived at a decent time. This may have been because of the sxsw festival that was going on.

I was pleasantly surprised as it was my first time flying with them. The seats were comfortable with more legroom than usual. The service was great too! The entertainment was good but could use a few more new movies.

Nothing special or negative. Pretty typical flight…no freebies in the way of food etcetera, but none were expected.

They were all bad because SAS was at fault and cost me my time. I will never fly SAS again.

Missed a connecting flight and SAS was at fault. I was awarded a $20 voucher in exchange for 8 hours of my time? Gfy.

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

I had an exit row and so was Comfortable on the long flight.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

The flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

The food not that great. Did not like the fact that we could not purchase upgrade at the airport

We paid for business class, and my seat did not work at all. Each time I wanted to adjust the position, an attendant had to come to physically force the seat into its new position. They tried to fix it by fiddling with the electronics (military reset, for example), to no avail. Also, the food was just mediocre. We were at the end of a serving section, so they ran out of several choices. (This was on the flight from Los Angeles to Munich.)

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I like the service and the efficiency. I am lactose intolerant and the lactose intolerant meal in business class was not astounding. Also, the business class fully reclining seats are not that comfortable.

Food was great but they didn't clear my meal tray for 3 hours. You'd think they could check though the cabin now and then.

Upon arriving at IAH, it was informed that the luggage had not arrived. Still waiting to hear back when it will be delivered.

I wasn’t allowed to board with my children. I was charged outrageous costs for basic carry on size luggage. The entertainment screens were outdated and not user friendly.

I was very happy with everything, thank you for the smooth flight ✈️

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

Our luggage didn’t arrive with us, that puts a damper on the whole trip.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.