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Billund

$342+ Cheap flights from Seattle (SEA) to Billund (BLL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap 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 February 19, 2026.

This Delta deal was found by Cheapflights users on 2/17. 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 2/232:15 pm
SEA
-
BLL
1 stop15h 20m
Delta
Sun 3/16:30 am
BLL
-
SEA
1 stop15h 35m
Delta
Deal found 2/17$474
This Delta deal was found by Cheapflights users on 2/17. 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.
Wed 2/252:15 pm
SEA
-
BLL
1 stop15h 20m
Delta
Sat 2/282:25 pm
BLL
-
SEA
1 stop30h 10m
Delta
Deal found 2/17$475
This Air France deal was found by Cheapflights users on 2/17. 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.
Wed 2/251:30 pm
SEA
-
BLL
2 stops16h 05m
Air France
Sun 3/86:30 am
BLL
-
SEA
1 stop15h 35m
Air France
Deal found 2/17$478
This Delta deal was found by Cheapflights users on 2/17. 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 2/232:15 pm
SEA
-
BLL
1 stop15h 20m
Delta
Tue 3/106:30 am
BLL
-
SEA
2 stops21h 29m
Delta
Deal found 2/17$484
This Delta deal was found by Cheapflights users on 2/17. 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 2/232:15 pm
SEA
-
BLL
1 stop15h 20m
Delta
Fri 2/276:00 am
BLL
-
SEA
2 stops27h 09m
Delta
Deal found 2/17$485
This KLM deal was found by Cheapflights users on 2/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:05 pm
SEA
-
BLL
1 stop33h 35m
Multiple Airlines
Sun 3/86:30 am
BLL
-
SEA
1 stop15h 35m
Multiple Airlines
Deal found 2/18$487
This Delta deal was found by Cheapflights users on 2/18. 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.
Sun 2/223:05 pm
SEA
-
BLL
1 stop33h 35m
Delta
Fri 3/66:00 am
BLL
-
SEA
1 stop14h 35m
Delta
Deal found 2/18$488
This Delta deal was found by Cheapflights users on 2/17. 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.
Tue 2/243:05 pm
SEA
-
BLL
1 stop13h 45m
Delta
Sat 2/282:25 pm
BLL
-
SEA
1 stop30h 10m
Delta
Deal found 2/17$489
This Delta deal was found by Cheapflights users on 2/18. 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.
Wed 2/2511:17 am
SEA
-
BLL
2 stops18h 18m
Delta
Sat 3/710:25 am
BLL
-
SEA
2 stops20h 57m
Delta
Deal found 2/18$490
This KLM deal was found by Cheapflights users on 2/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:50 am
SEA
-
BLL
2 stops16h 30m
Multiple Airlines
Sun 3/86:30 am
BLL
-
SEA
1 stop15h 35m
Multiple Airlines
Deal found 2/18$491
This Delta deal was found by Cheapflights users on 2/17. 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 2/2211:20 am
SEA
-
BLL
2 stops17h 30m
Delta
Thu 2/266:30 am
BLL
-
SEA
1 stop13h 55m
Delta
Deal found 2/17$492

Find 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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$537
(Delta)

One-way from

$342
(Air France)

Popular in

January

Cheapest in

February

Average price

$561
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
One-way flight from Seattle/Tacoma Intl to Billund
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($14 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 February 2026
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 February 19, 2026.
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

Sun 3/1

7:10 am-9:40 am

2 stops17h 30m

Billund

Thu 3/5

12:05 pm-11:35 am

1 stop32h 30m

$537

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

7:10 am-11:20 am

2 stops19h 10m

Billund

Wed 3/4

12:05 pm-11:35 am

1 stop32h 30m

$537

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

7:10 am-9:40 am

2 stops17h 30m

Billund

Mon 3/9

10:25 am-12:35 pm

1 stop34h 10m

$537

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

7:10 am-9:40 am

2 stops17h 30m

Billund

Fri 3/6

10:25 am-10:22 pm

2 stops20h 57m

$547

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

8:00 am-1:30 pm

2 stops20h 30m

Billund

Tue 3/10

2:15 pm-10:16 pm

2 stops40h 01m

$556

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

8:00 am-1:30 pm

2 stops20h 30m

Billund

Mon 3/9

2:15 pm-10:16 pm

2 stops40h 01m

$556

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

8:00 am-1:30 pm

2 stops20h 30m

Billund

Thu 3/5

6:30 am-10:16 pm

2 stops24h 46m

$556

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 8/12

11:20 pm-10:00 am

2 stops25h 40m

Billund

Sun 8/23

2:45 pm-1:56 pm

2 stops32h 11m

$557

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 3/1

7:00 am-10:00 am

2 stops18h 00m

Billund

Wed 3/4

6:35 am-7:03 pm

2 stops21h 28m

$559

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Thu 4/2

7:00 am-10:00 am

2 stops18h 00m

Billund

Sat 4/11

10:35 am-9:53 pm

2 stops44h 18m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 16 results
1
2
  • Most accurate provider: When it comes to deals on Seattle-Billund flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Billund flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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 February 19, 2026.
Peruse reviews from past customers who have flown with Delta 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
8,213 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

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
8,213 reviews
Delta
7.9
Good
8,213 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

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
7,790 reviews
Delta
7.9
Good
8,213 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

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 17h 30m. 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. An alternate airline flying to your destination would be Lufthansa. Delta is priced at 38% 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

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Top 2 airlines flying from Seattle to Billund

Discover the top 2 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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$421Average$822FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$597Average$742FlexibilityNo cancel feeOn-time76%

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