SEA - BLL

$583 Find Cheap Flights from Seattle to Billund - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Billund departing on 8/15. 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 Billund

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Billund, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Billund, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$583
Typical prices: $640-$1,047
Icelandair
Sat 8/15Wed 8/19
SEA - BLL • 1 stop
Top airlines
Cheapest • from $583 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Billund. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $749 (round-trip)
Shortest trip • 12h 37m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Billund!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Billund (SEA-BLL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Billund 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 Seattle to Billund

Sat, Aug 15 - Wed, Aug 19
Icelandair Logo
11:25 pm - 9:10 pm
SEA
-
BLL
12h 45m
1 stop
Icelandair Logo
10:35 pm - 11:45 am
BLL
-
SEA
22h 10m
1 stop
$583Icelandair
Wed, Nov 4 - Wed, Nov 11
Air France Logo
2:05 pm - 9:45 pm
SEA
-
BLL
22h 40m
1 stop
Air France Logo
6:00 am - 11:47 am
BLL
-
SEA
14h 47m
1 stop
$596Air France
Wed, Nov 4 - Wed, Nov 11
Delta Logo
11:05 am - 2:25 pm
SEA
-
BLL
18h 20m
2 stops
Delta Logo
6:00 am - 11:47 am
BLL
-
SEA
14h 47m
1 stop
$600Delta
Wed, Nov 4 - Wed, Nov 11
Delta Logo
9:43 am - 2:25 pm
SEA
-
BLL
19h 42m
2 stops
Delta Logo
12:05 pm - 10:05 pm
BLL
-
SEA
19h 00m
2 stops
$610Delta
Sat, Aug 15 - Wed, Aug 19
Delta Logo
7:15 am - 9:35 am
SEA
-
BLL
17h 20m
2 stops
Delta Logo
11:45 am - 4:27 pm
BLL
-
SEA
13h 42m
1 stop
$689Delta
Wed, Jul 15 - Sun, Jul 19
Air France Logo
1:45 pm - 1:30 pm
SEA
-
BLL
14h 45m
1 stop
Air France Logo
4:00 pm - 11:33 am
BLL
-
SEA
28h 33m
1 stop
$698Air France
Sat, Aug 15 - Wed, Aug 19
Delta Logo
7:15 am - 9:35 am
SEA
-
BLL
17h 20m
2 stops
Delta Logo
11:45 am - 11:11 pm
BLL
-
SEA
20h 26m
2 stops
$700Delta
Thu, Aug 13 - Thu, Aug 20
United Airlines Logo
2:10 pm - 6:15 pm
SEA
-
BLL
19h 05m
1 stop
United Airlines Logo
6:00 am - 2:22 pm
BLL
-
SEA
17h 22m
2 stops
$756United Airlines
Thu, Aug 13 - Thu, Aug 20
United Airlines Logo
7:00 am - 10:00 am
SEA
-
BLL
18h 00m
2 stops
United Airlines Logo
6:00 am - 2:22 pm
BLL
-
SEA
17h 22m
2 stops
$760United Airlines
Fri, Aug 14 - Fri, Aug 21
United Airlines Logo
7:00 am - 9:50 am
SEA
-
BLL
17h 50m
2 stops
United Airlines Logo
6:00 am - 2:22 pm
BLL
-
SEA
17h 22m
2 stops
$761United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Billund flights

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

How much is a round-trip flight from Seattle to Billund?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Billund departing in August.

What is the cheapest month to fly from Seattle to Billund?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Billund, 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 from Seattle to Billund is April, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and January, where the average cost of round-trip tickets is $890 and $873 respectively.

Good to know

Low seasonFebruary
Cheapest flight$583
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Seattle to Billund

When to book flights from Seattle to Billund

Are your dates flexible? Find out the best times to travel from Seattle to Billund based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Billund

  • What is the cheapest flight from Seattle to Billund?

    In the last 5 days, the lowest price for a flight from Seattle to Billund was $583 for a round-trip ticket.

  • Do I need a passport to fly between Seattle and Billund?

    Yes, you’ll need a passport to travel to Billund from Seattle.

  • Which aircraft models fly most regularly from Seattle to Billund?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Billund?

    SkyTeam is the only airline alliance operating flights between Seattle and Billund.

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

    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 from Seattle to Billund.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billund from 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 from Seattle to Billund?

    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 Billund with an airline and back to Seattle with another airline. Booking your flights between Seattle and BLL can sometimes prove cheaper using this method.

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

    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 Billund from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seattle to Billund

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Billund. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Billund? 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
DeltaOverall score based on 8452 reviews
7.2Food
7.8Comfort
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

2.0 MediocreBlake, Jun 2026
SEA - BOS
Read more Delta reviews

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

First flight out and was 85 minutes delayed. Notification came out way too late

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

Everything you need to know for your flight from Seattle to Billund

Information on your arrival and departure airports