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Billund

$498+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
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 July 29, 2026.

This Mytrip deal was found by Cheapflights users on 7/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
-
BLL
1 stop17h 35m
Icelandair
Fri 8/2110:35 pm
BLL
-
SEA
1 stop22h 10m
Icelandair
Deal found 7/24$498
This KLM deal was found by Cheapflights users on 7/27. 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.
Mon 8/175:45 pm
SEA
-
BLL
1 stop20h 15m
KLM
Mon 8/316:00 am
BLL
-
SEA
1 stop14h 37m
KLM
Deal found 7/27$616
This Delta deal was found by Cheapflights users on 7/26. 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 9/97:15 am
SEA
-
BLL
2 stops18h 45m
Delta
Wed 9/166:00 am
BLL
-
SEA
1 stop14h 47m
Delta
Deal found 7/26$621
This Delta deal was found by Cheapflights users on 7/26. 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 10/306:00 am
SEA
-
BLL
2 stops19h 40m
Delta
Sun 11/110:20 am
BLL
-
SEA
2 stops18h 56m
Delta
Deal found 7/26$622
This Scandinavian Airlines deal was found by Cheapflights users on 7/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:20 am
SEA
-
BLL
2 stops42h 05m
Scandinavian Airlines
Sun 12/69:15 pm
BLL
-
SEA
2 stops35h 11m
Scandinavian Airlines
Deal found 7/28$710
This Expedia deal was found by Cheapflights users on 7/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:40 pm
SEA
-
BLL
1 stop18h 45m
Multiple Airlines
Fri 8/216:45 pm
BLL
-
SEA
2 stops30h 52m
Multiple Airlines
Deal found 7/24$717
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 12/27:00 am
SEA
-
BLL
2 stops17h 55m
United Airlines
Sun 12/66:35 am
BLL
-
SEA
1 stop14h 25m
United Airlines
Deal found 7/26$766
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:00 am
SEA
-
BLL
2 stops18h 55m
Multiple Airlines
Sun 11/17:00 pm
BLL
-
SEA
1 stop26h 00m
Multiple Airlines
Deal found 7/26$785
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Tue 9/85:00 am
SEA
-
BLL
2 stops24h 20m
United Airlines
Tue 9/156:05 am
BLL
-
SEA
1 stop14h 50m
United Airlines
Deal found 7/25$797

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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$498
(Mytrip)

Popular in

September

Cheapest in

February

Average price

$884
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. 6% potential increase in price ($49 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 July 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 July 29, 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

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 9/9

7:15 am-11:00 am

2 stops18h 45m

Billund

Wed 9/16

6:00 am-11:47 am

1 stop14h 47m

$621

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 12/2

7:20 am-10:25 am

2 stops42h 05m

Billund

Sun 12/6

9:15 pm-11:26 pm

2 stops35h 11m

$710

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 12/2

10:40 pm-6:20 pm

2 stops34h 40m

Billund

Sun 12/6

6:35 am-12:33 am

2 stops26h 58m

$776

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 9/8

5:00 am-2:20 pm

2 stops24h 20m

Billund

Tue 9/15

6:05 am-11:55 am

1 stop14h 50m

$797

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 9/9

1:57 pm-5:50 pm

2 stops18h 53m

Billund

Wed 9/16

6:00 am-11:55 am

1 stop14h 55m

$797

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Mon 8/17

7:00 am-10:05 am

2 stops18h 05m

Billund

Mon 8/31

6:00 am-4:07 pm

2 stops19h 07m

$807
Quickest round-trip

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 9/9

5:45 pm-5:55 pm

1 stop15h 10m

Billund

Wed 9/16

6:00 am-11:47 am

1 stop14h 47m

$820

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Sorted by cheapest first
  • 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

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

Airfare is below average for this route at the moment.

Seattle to Billund flights typically cost between $640 and $1,047 in August.
The cheapest round-trip price found within the last 5 days was $498 on Icelandair (Aug 16-Aug 21).

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 July 29, 2026.
Peruse reviews from past customers who have flown with Delta and Air France 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
7.8
Good
8,486 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,486 reviews
Delta
7.8
Good
8,486 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Air France
7.5
Good
1,629 reviews
Delta
7.8
Good
8,486 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 35m. 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 Air France. Delta is priced at 40% 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.

See more FAQs

Traveling to a place near Billund?

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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 July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$421Average$706FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$500Average$648FlexibilityNo cancel feeOn-time77%

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