HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Billund

$563+ 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 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
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.

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 March 13, 2026.

This Air France deal was found by Cheapflights users on 3/12. 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.
Mon 6/296:45 pm
SEA
-
BLL
1 stop18h 40m
Air France
Thu 7/910:15 am
BLL
-
SEA
1 stop15h 05m
Air France
Deal found 3/12$563
This Delta deal was found by Cheapflights users on 3/11. 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 3/257:20 am
SEA
-
BLL
2 stops18h 20m
Delta
Tue 3/316:00 am
BLL
-
SEA
1 stop14h 45m
Delta
Deal found 3/11$599
This United Airlines deal was found by Cheapflights users on 3/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/811:50 pm
SEA
-
BLL
2 stops28h 30m
United Airlines
Thu 11/126:30 am
BLL
-
SEA
1 stop14h 40m
United Airlines
Deal found 3/8$614
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2611:59 pm
SEA
-
BLL
2 stops25h 06m
United Airlines
Sun 5/36:00 am
BLL
-
SEA
2 stops26h 59m
United Airlines
Deal found 3/12$674
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/232:39 pm
SEA
-
BLL
2 stops34h 11m
United Airlines
Thu 4/3010:25 am
BLL
-
SEA
2 stops33h 18m
United Airlines
Deal found 3/9$679
This United Airlines deal was found by Cheapflights users on 3/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:30 am
SEA
-
BLL
2 stops22h 40m
United Airlines
Fri 5/156:00 am
BLL
-
SEA
1 stop15h 20m
United Airlines
Deal found 3/10$690

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 March 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$563
(Air France)

Popular in

January

Cheapest in

February

Average price

$636
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
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 13, 2026.
Use the filters below to find and compare flights from Seattle to Billund that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Mon 6/29

6:45 pm-10:25 pm

1 stop18h 40m

Billund

Thu 7/9

10:15 am-4:20 pm

1 stop15h 05m

$563

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 3/25

7:20 am-9:40 am

2 stops18h 20m

Billund

Tue 3/31

11:45 am-10:10 pm

2 stops19h 25m

$609

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 4/26

11:59 pm-10:05 am

2 stops25h 06m

Billund

Sun 5/3

6:00 am-11:59 pm

2 stops26h 59m

$674

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Thu 4/23

2:39 pm-9:50 am

2 stops34h 11m

Billund

Thu 4/30

10:25 am-10:43 am

2 stops33h 18m

$679

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 4/24

7:15 am-11:20 am

2 stops19h 05m

Billund

Fri 5/1

6:40 am-5:39 pm

1 stop19h 59m

$695

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 5/8

5:40 am-6:10 pm

2 stops27h 30m

Billund

Fri 5/15

6:00 am-9:08 pm

2 stops48h 08m

$698

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 4/24

1:45 pm-10:55 am

1 stop12h 10m

Billund

Fri 5/1

6:45 pm-11:45 am

1 stop26h 00m

$702

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 4/22

11:59 pm-9:50 am

2 stops48h 51m

Billund

Thu 5/7

6:00 am-2:20 pm

2 stops17h 20m

$766

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 4/25

8:00 am-10:00 am

2 stops17h 00m

Billund

Sat 5/2

3:00 pm-4:59 pm

2 stops34h 59m

$789
Cheapest one-way

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 6/13

9:29 am-9:35 pm

2 stops27h 06m

$1,991

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 13 resultsSorted by cheapest first
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 March 13, 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
8,284 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Comfort

7.9

Boarding

8.1

Food

7.2

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
8,284 reviews
Delta
7.9
Good
8,284 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Comfort

7.9

Boarding

8.1

Food

7.2

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
7,846 reviews
Delta
7.9
Good
8,284 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Comfort

7.9

Boarding

8.1

Food

7.2

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 18h 20m. 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

Traveling to a place near Billund?

Book flights to Billund if you plan to visit one of these locations
Vejle

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.

Alternative routes for Seattle to Billund

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Copenhagen flights
Portland to Copenhagen flights
Spokane to Copenhagen flights

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 March 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$421Average$788FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$597Average$762FlexibilityNo 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.