$365 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 9/10. 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, 0 bags

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle, as well as popular online travel agencies
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Flight 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

Fri, Oct 23 - Tue, Oct 27
British Airways Logo
2:45 pm - 11:35 am
BLL
-
SEA
29h 50m
1 stop
British Airways Logo
3:10 pm - 8:05 pm
SEA
-
BLL
20h 55m
2 stops
$543British Airways
Fri, Oct 23 - Tue, Oct 27
British Airways Logo
2:45 pm - 11:35 am
BLL
-
SEA
29h 50m
1 stop
British Airways Logo
3:10 pm - 8:05 pm
SEA
-
BLL
20h 55m
2 stops
$544British Airways
Fri, Oct 23 - Tue, Oct 27
United Airlines Logo
6:00 am - 2:22 pm
BLL
-
SEA
17h 22m
2 stops
United Airlines Logo
8:30 am - 1:25 pm
SEA
-
BLL
20h 55m
3 stops
$709United Airlines
Fri, Oct 23 - Tue, Oct 27
United Airlines Logo
6:00 am - 2:22 pm
BLL
-
SEA
17h 22m
2 stops
United Airlines Logo
8:30 am - 1:25 pm
SEA
-
BLL
20h 55m
3 stops
$711United Airlines
Wed, Aug 5 - Thu, Aug 13
Air Canada Logo
12:15 pm - 10:42 pm
CPH
-
SEA
19h 27m
2 stops
Air Canada Logo
5:50 am - 8:55 am
SEA
-
CPH
18h 05m
2 stops
$732Air Canada
Fri, Jul 31 - Sat, Aug 8
Air Canada Logo
12:15 pm - 10:42 pm
CPH
-
SEA
43h 27m
2 stops
Air Canada Logo
3:00 pm - 8:55 am
SEA
-
CPH
32h 55m
2 stops
$733Air Canada
Thu, Jun 25 - Mon, Jun 29
Delta Logo
6:20 am - 11:37 am
AAL
-
SEA
14h 17m
1 stop
Delta Logo
10:35 am - 5:45 pm
SEA
-
AAL
22h 10m
2 stops
$840Delta
Tue, Jul 14 - Tue, Aug 4
Delta Logo
6:20 am - 11:33 am
AAL
-
SEA
14h 13m
1 stop
Delta Logo
7:15 am - 10:00 am
SEA
-
AAL
17h 45m
2 stops
$841Delta
Wed, Sep 30 - Sun, Oct 4
Scandinavian Airlines Logo
9:40 am - 11:10 pm
AAR
-
SEA
22h 30m
2 stops
Scandinavian Airlines Logo
3:55 pm - 9:10 am
SEA
-
AAR
32h 15m
1 stop
$898Scandinavian Airlines
Wed, Sep 30 - Sun, Oct 4
Scandinavian Airlines Logo
9:40 am - 11:10 pm
AAR
-
SEA
22h 30m
2 stops
Scandinavian Airlines Logo
3:55 pm - 9:10 am
SEA
-
AAR
32h 15m
1 stop
$899Scandinavian Airlines
Booking Insights

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 day to fly to Seattle?

The average price of all round-trip flights to Seattle clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Seattle is Friday where round-trip tickets can be as cheap as $877. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $1,141 on average.

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 round-trip 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 December, where tickets cost $317 on average for return flights. On the other hand, the most expensive months are June and July, where the average cost of tickets from Denmark is $1,203 and $1,122 respectively. For one-way flights, the best month to travel is September with an average price of $242.

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

The average price for all round-trip flights to Seattle depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Seattle is generally in the afternoon, when round-trip flights cost $901 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 $901.

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 $893 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, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$365
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 28% 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 $1,275. The cheapest price found on KAYAK in the last 2 weeks cost $843 and departed from Kastrup Copenhagen Airport.

  • 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.

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 $868
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.

Reviews of the top 4 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.
7.9
DeltaOverall score based on 8397 reviews
8.1Boarding
7.8Entertainment
7.2Food
7.8Comfort
8.5Crew
Airline reviews

Five hour delays every hour, I wish it were all at once

2.0 MediocreAnonymous, Jun 2026
MCO - LGA
Read more Delta reviews

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

I like the lane and orderliness and timely everything was executed. Amazing

If you cant travel Delta One, Comfort Class is the next best thing!

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Basic flight. Great for something under two hours. Seats were a bit dated and uncomfortable

I feel the service staff do not treat American customers well. I also feel there may be discrimination against minorities.

They lost my luggage and there is no update, no luggage and no hope that they will find it. It has been 26 hours since we landed

Yes avoid JFK airport at all costs. A horror to navigate.

No free Wi-Fi. I have SkyMiles but not a high status, having an account has been enough for Wi-Fi on other flights, but this one was going to charge me to use it. Also turbulence was really bad toward the end, but I didn't count this in my ratings since I know Delta cannot control the weather - it's 2026 and lack of WiFi alone is enough for a poor rating.

My daughter always gets sick when we order the gluten free meal option. Internet didn’t work as advertised.

Nothing to answer your questions appropriately. It was just a 2hrs flight from London Heathrow and we were served a cup of tea only. So the questions about food aren't relevant and also, there's no entertainment on these short haul flights. Overall, the flight ✈️ was okay.

The seat in economy are comfy, with some legroom and shoulder room. The food was above average. The plane was newish.

Excellent crew members, but my seat and food wasn’t the best

All went smoothly. That's what I want on a long flight.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

At least one soda free, felt like I was nickeled to death.

Pleasant, attentive flight attendants, but they’ve got to upgrade their seats to be a true “business class” carrier.

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

When you consider the price I ended up paying for everything. This was not a good deal! I had no idea that this airline had changed to a bargain basement no frills airline. So, it was disappointing to have to pay for every little thing. The only thing included was water and coffee. You have to pay for everything else! So I just felt nickel and dime.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

Traveling to a place near Seattle?

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Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle