SEA - BLL

$509 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 4/12. 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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Everything you should know

Cheapest round-trip
$509
Typical prices: $694-$728
Multiple Airlines
Sun 4/12Wed 4/22
SEA - BLL • 2 stops
Cheapest one-way
Multiple Airlines
Fri 12/19
SEA - BLL • multi-stop
When to travel
March
Cheapest • 15% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Sun, Apr 12 - Wed, Apr 22
Multiple Airlines Logo
2:01 pm - 8:35 pm
SEA
-
BLL
21h 34m2 stops
Multiple Airlines Logo
12:10 pm - 11:05 pm
BLL
-
SEA
19h 55m2 stops
$509Multiple Airlines
Fri, Jan 23 - Mon, Jan 26
British Airways Logo
1:35 pm - 12:20 pm
SEA
-
BLL
13h 45m1 stop
British Airways Logo
8:45 pm - 11:30 am
BLL
-
SEA
23h 45m1 stop
$510British Airways
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
2:15 pm - 3:30 pm
SEA
-
BLL
16h 15m1 stop
Multiple Airlines Logo
2:30 pm - 11:35 am
BLL
-
SEA
30h 05m1 stop
$523Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
2:15 pm - 3:30 pm
SEA
-
BLL
16h 15m1 stop
Multiple Airlines Logo
6:00 am - 11:35 am
BLL
-
SEA
14h 35m1 stop
$524Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m1 stop
Multiple Airlines Logo
6:00 am - 2:44 pm
BLL
-
SEA
17h 44m2 stops
$529Multiple Airlines
Tue, Apr 28 - Sat, May 2
United Airlines Logo
2:10 pm - 5:55 pm
SEA
-
BLL
18h 45m1 stop
United Airlines Logo
6:00 am - 12:20 pm
BLL
-
SEA
15h 20m1 stop
$538United Airlines
Fri, Feb 20 - Sun, Mar 1
United Airlines Logo
7:00 am - 1:20 pm
SEA
-
BLL
21h 20m2 stops
United Airlines Logo
6:30 am - 11:49 am
BLL
-
SEA
38h 19m2 stops
$542United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
10:58 am - 1:20 pm
SEA
-
BLL
17h 22m2 stops
United Airlines Logo
6:45 am - 10:43 pm
BLL
-
SEA
24h 58m3 stops
$552United Airlines
Sun, Feb 1 - Sun, Feb 8
United Airlines Logo
8:10 am - 10:00 am
SEA
-
BLL
16h 50m2 stops
United Airlines Logo
10:25 am - 10:43 pm
BLL
-
SEA
21h 18m3 stops
$640United Airlines
Thu, Jun 11 - Thu, Jun 18
Lufthansa Logo
2:10 pm - 2:00 pm
SEA
-
BLL
14h 50m1 stop
Lufthansa Logo
6:00 am - 12:20 pm
BLL
-
SEA
15h 20m1 stop
$651Lufthansa
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 April.

What’s the cheapest day of the week to fly from Seattle to Billund?

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

Your flight ticket price will generally be cheaper if you fly to Billund on a Friday and more expensive on a Wednesday. On your return trip to Seattle, you should consider flying back on a Monday, and avoid Thursdays for better deals.

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 March, where tickets cost $590 (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$509
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 3% 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 3 days, the lowest price for a flight from Seattle to Billund was $509 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 $757 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 8010 reviews
8.5Crew
7.9Entertainment
8.1Boarding
7.3Food
7.9Comfort
Airline reviews

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

2.0 MediocreWilliam, Dec 2025
DAL - ATL
Read more Delta reviews

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Our flight was held more than 1.5 hours due to baggage issues and overbooking. Our bag was never tagged and caused an unnecessary amount of stress. Personnel on the Delta side were mediocre at best and seemed to not care about customers and seemed like they hated their work.

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

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.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

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

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

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

Information on your arrival and departure airports