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Billund

$505+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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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 20, 2025.

This Delta deal was found by Cheapflights users on 11/18. 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.
Mon 12/87:20 amSEA - BLL
2 stops17h 20mDelta
Thu 12/186:00 amBLL - SEA
2 stops19h 50mDelta
Deal found 11/18$672
This British Airways deal was found by Cheapflights users on 11/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:50 pmSEA - BLL
1 stop32h 40mBritish Airways
Thu 12/181:00 pmBLL - SEA
1 stop12h 55mBritish Airways
Deal found 11/18$831
This Air Canada deal was found by Cheapflights users on 11/18. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/88:00 pmSEA - BLL
3 stops28h 45mAir Canada
Thu 12/186:30 amBLL - SEA
2 stops24h 46mAir Canada
Deal found 11/18$1,307

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 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$492
(British Airways)

Popular in

December

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.
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From Seattle/Tacoma Intl to Billund
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($178 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 20, 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

Tue 2/17

7:30 am-3:05 pm

2 stops22h 35m

Billund

Sat 2/28

9:55 am-10:25 pm

2 stops21h 30m

$505

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 2/18

6:50 pm-12:05 pm

1 stop32h 15m

Billund

Fri 2/27

8:50 pm-11:30 am

1 stop23h 40m

$509

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-3:30 pm

1 stop16h 15m

Billund

Wed 2/25

2:30 pm-11:40 am

1 stop30h 10m

$523

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Thu 2/19

1:40 pm-2:35 pm

1 stop15h 55m

Billund

Thu 2/26

12:05 pm-11:40 am

1 stop32h 35m

$523

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Thu 2/19

1:40 pm-2:35 pm

1 stop15h 55m

Billund

Tue 3/3

6:30 am-11:25 am

1 stop13h 55m

$526

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 2/17

9:59 pm-2:35 pm

2 stops31h 36m

Billund

Thu 2/26

6:00 am-11:40 am

1 stop14h 40m

$527

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Mon 2/16

9:59 pm-2:35 pm

2 stops31h 36m

Billund

Fri 2/27

6:00 am-11:40 am

1 stop14h 40m

$527

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 2/18

11:17 am-2:35 pm

2 stops18h 18m

Billund

Wed 2/25

12:05 pm-11:40 am

1 stop32h 35m

$527

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 2/17

9:59 pm-2:35 pm

2 stops31h 36m

Billund

Fri 2/27

6:00 am-11:40 am

1 stop14h 40m

$527

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 2/14

9:59 pm-9:40 am

2 stops26h 41m

Billund

Fri 2/27

6:00 am-11:40 am

1 stop14h 40m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 12 results
1
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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 20, 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.

How much does it cost to fly round-trip from Seattle to Billund?

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 20, 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
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

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
8,002 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

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
1,414 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

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
7,579 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

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 15m. 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 44% 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

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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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$421Average$765FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$582Average$617FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$597Average$674FlexibilityNo cancel feeOn-time76%

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