HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Billund

$520+ Cheap flights from Seattle (SEA) to Billund (BLL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Billund with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Seattle to Billund

Cheapest flights from Seattle to Billund
Explore the most affordable flight options available from Seattle to Billund. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Air France deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:05 pmSEA - BLL
1 stop23h 55mAir France
Sun 12/1410:20 amBLL - SEA
1 stop34h 30mAir France
Deal found 11/4$520
This Air France deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/63:05 pmSEA - BLL
1 stop17h 45mAir France
Sun 12/1410:20 amBLL - SEA
1 stop34h 30mAir France
Deal found 11/4$526
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:05 pmSEA - BLL
1 stop16h 25mDelta
Sun 12/142:30 pmBLL - SEA
2 stops40h 55mDelta
Deal found 11/4$530
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/79:30 amSEA - BLL
2 stops20h 05mDelta
Sun 12/1410:20 amBLL - SEA
2 stops19h 30mDelta
Deal found 11/4$533
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/63:05 pmSEA - BLL
1 stop33h 35mDelta
Sun 12/146:00 amBLL - SEA
2 stops23h 50mDelta
Deal found 11/4$537
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:10 amSEA - BLL
2 stops19h 10mDelta
Fri 12/126:00 amBLL - SEA
2 stops20h 10mDelta
Deal found 11/4$541
This KAYAK deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:00 amSEA - BLL
2 stops31h 10mLufthansa
Fri 12/126:30 amBLL - SEA
2 stops24h 58mLufthansa
Deal found 11/4$551
This FlightHub deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:15 amSEA - BLL
2 stops18h 40mScandinavian Airlines
Sat 12/139:55 amBLL - SEA
2 stops18h 05mScandinavian Airlines
Deal found 11/4$559
This Air France deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:05 pmSEA - BLL
1 stop23h 55mAir France
Fri 12/126:00 amBLL - SEA
1 stop14h 50mAir France
Deal found 11/4$620
This KAYAK deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/63:40 pmSEA - BLL
2 stops36h 50mLufthansa
Fri 12/126:30 amBLL - SEA
1 stop14h 40mLufthansa
Deal found 11/4$624
This KAYAK deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:05 amSEA - BLL
2 stops38h 35mLufthansa
Sat 12/136:45 amBLL - SEA
1 stop14h 25mLufthansa
Deal found 11/4$627
This KAYAK deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:05 amSEA - BLL
2 stops28h 15mLufthansa
Sun 12/142:05 pmBLL - SEA
2 stops41h 23mLufthansa
Deal found 11/4$634

Cheap flight deals from Seattle to Billund

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Billund (BLL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$520
(Air France)

Popular in

May

Cheapest in

March

Average price

$597
Provider with most accurate pricing for Seattle/Tacoma Intl-Billund flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Billund flights.
Search Deals
From Seattle/Tacoma Intl to Billund
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Billund that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Seattle to Billund that are best for you.

Fly from

Seattle

Fly to

Billund

Route

Depart

Return

Price

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 12/6

3:05 pm-5:50 pm

1 stop17h 45m

Billund

Sun 12/14

10:20 am-11:50 am

1 stop34h 30m

$526

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 12/5

2:05 pm-3:30 pm

1 stop16h 25m

Billund

Sun 12/14

2:30 pm-10:25 pm

2 stops40h 55m

$530

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 12/7

9:30 am-2:35 pm

2 stops20h 05m

Billund

Sun 12/14

10:20 am-8:50 pm

2 stops19h 30m

$533

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 3/27

10:05 am-1:20 pm

2 stops19h 15m

Billund

Tue 3/31

5:55 am-12:20 pm

1 stop15h 25m

$535

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 12/6

3:05 pm-5:50 pm

1 stop17h 45m

Billund

Sat 12/13

6:00 am-4:21 pm

2 stops19h 21m

$537

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 12/6

3:05 pm-9:40 am

1 stop33h 35m

Billund

Sun 12/14

6:00 am-8:50 pm

2 stops23h 50m

$537

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 12/7

7:00 am-11:10 pm

2 stops31h 10m

Billund

Sat 12/13

6:45 am-12:10 pm

1 stop14h 25m

$541

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 12/5

7:10 am-11:20 am

2 stops19h 10m

Billund

Fri 12/12

6:00 am-5:10 pm

2 stops20h 10m

$541

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 12/7

7:00 am-11:10 pm

2 stops31h 10m

Billund

Fri 12/12

6:30 am-10:28 pm

2 stops24h 58m

$551

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 12/5

11:15 am-2:55 pm

2 stops18h 40m

Billund

Sat 12/13

9:55 am-7:00 pm

2 stops18h 05m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 11 results
1
2

Compare providers for flights from Seattle to Billund

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Billund in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Billund flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Billund flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Billund flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Billund flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Billund flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Billund

Have a flexible travel schedule? Discover the best time to fly to Billund from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Seattle to Billund?

Currently, December is the cheapest month in which you can book a flight from Seattle to Billund (average of $332). Flying from Seattle to Billund in January is currently the most expensive (average of $873). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BLL?

Find hourly flight availability from Seattle to Billund. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Billund in the morning. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Billund

Get insights into the airlines that provide service to Billund. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Billund. Reviews last updated November 6, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Lufthansa from Seattle to Billund to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,004 reviews

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,004 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,405 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,555 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Billund. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Billund?

    Departing from Seattle to Billund will take you 16h 25m. The distance from Seattle to Billund is about 4771 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Billund round-trip?

    Delta, at $421, was found to be the cheapest airline from Seattle to Billund.Alternate airlines to your destination round-trip include KLM and Lufthansa. Delta is priced at 39% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Billund that include hotel bookings?

    Yes. In addition to deals on Seattle to Billund flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Billund?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Billund.

  • Can I find deals for business class flights from Seattle to Billund?

    Yes. Cheapflights offers flight deals from Seattle to Billund by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Billund?

    Currently, December is the cheapest month in which you can book a flight from Seattle to Billund (average of $332). Flying from Seattle to Billund in January is currently the most expensive (average of $873). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Seattle to Billund

Discover the top 3 airlines that operate flights from Seattle to Billund. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$421Average$765FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$582Average$617FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$597Average$674FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.