SEA - BLL

$473 Find Cheap Flights from Seattle to Billund

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 2/23. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$473
Overall average: $561
British Airways
Mon 2/23Mon 3/2
SEA - BLL • 2 stops
Cheapest one-way
Multiple Airlines
Sun 1/11
SEA - BLL • multi-stop
Top airlines
British Airways
Cheapest • from $473 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 19% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Mon, Feb 23 - Mon, Mar 2
British Airways Logo
7:15 am - 12:20 pm
SEA
-
BLL
20h 05m2 stops
British Airways Logo
8:45 pm - 4:55 pm
BLL
-
SEA
29h 10m1 stop
$473British Airways
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
6:50 pm - 12:30 pm
SEA
-
BLL
32h 40m1 stop
British Airways Logo
8:45 pm - 11:30 am
BLL
-
SEA
23h 45m1 stop
$475British Airways
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
7:15 am - 12:20 pm
SEA
-
BLL
20h 05m2 stops
British Airways Logo
8:45 pm - 11:04 pm
BLL
-
SEA
35h 19m2 stops
$476British Airways
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
12:35 pm - 1:30 pm
SEA
-
BLL
39h 55m2 stops
United Airlines Logo
6:30 am - 9:12 pm
BLL
-
SEA
23h 42m3 stops
$509United Airlines
Mon, Apr 6 - Mon, Apr 13
Air France Logo
6:40 pm - 11:20 am
SEA
-
BLL
31h 40m1 stop
Air France Logo
2:20 pm - 11:45 am
BLL
-
SEA
30h 25m1 stop
$512Air France
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m1 stop
Multiple Airlines Logo
2:30 pm - 11:35 am
BLL
-
SEA
30h 05m1 stop
$516Multiple Airlines
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
12:40 pm - 1:30 pm
SEA
-
BLL
39h 50m3 stops
United Airlines Logo
6:30 am - 9:12 pm
BLL
-
SEA
23h 42m3 stops
$520United Airlines
Fri, Feb 20 - Sun, Mar 1
KLM Logo
9:50 am - 11:20 am
SEA
-
BLL
16h 30m2 stops
KLM Logo
2:30 pm - 11:35 am
BLL
-
SEA
30h 05m1 stop
$528KLM
Fri, Feb 20 - Sun, Mar 1
KLM Logo
9:50 am - 11:20 am
SEA
-
BLL
16h 30m2 stops
KLM Logo
12:05 pm - 11:35 am
BLL
-
SEA
32h 30m1 stop
$529KLM
Mon, Apr 6 - Mon, Apr 13
British Airways Logo
1:37 pm - 11:05 am
SEA
-
BLL
36h 28m2 stops
British Airways Logo
9:30 pm - 11:35 am
BLL
-
SEA
23h 05m1 stop
$536British Airways
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.

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 February, where tickets cost $561 (return) on average. On the other hand, the most expensive months are January and May, where the average cost of round-trip tickets is $873 and $809 respectively.

Good to know

Low seasonJanuary
Cheapest flight$473
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly with an average 1% increase in price.
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 3 days, the lowest price for a flight from Seattle to Billund was $473 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?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Seattle and Billund, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Billund, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Seattle to Billund are Delta and KLM. With an average price for the route of $765 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $617 and an overall rating of 7.7.

  • 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 3 airlines serving 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.
7.9
DeltaOverall score based on 8039 reviews
7.2Food
7.9Comfort
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

8.0 ExcellentG, Jan 2026
FLL - ATL
Read more Delta reviews

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

Late flight Delays Poor service Poor staff Worst airline ever

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

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

Information on your arrival and departure airports