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Billund

$562+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BLL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$562
(United Airlines)

Popular in

May

Cheapest in

December

Average price

$751
From Seattle/Tacoma Intl to Billund
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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 10/299:25 amSEA - BLL
2 stops20h 00mUnited Airlines
Wed 11/52:25 pmBLL - SEA
2 stops28h 25mUnited Airlines
Deal found 9/14$562
This WestJet deal was found by Cheapflights users on 9/15. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:40 amSEA - BLL
2 stops28h 45mWestJet
Fri 10/106:45 amBLL - SEA
2 stops39h 14mWestJet
Deal found 9/15$17,751

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 September 15, 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

Wed 10/29

9:25 am-1:25 pm

2 stops20h 00m

Billund

Wed 11/5

2:25 pm-9:50 am

2 stops28h 25m

$562

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 10/5

8:40 am-10:25 pm

2 stops28h 45m

Billund

Fri 10/10

6:45 am-12:59 pm

2 stops39h 14m

$17,751

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 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 September 15, 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 27% 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 September 15, 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
8.0
Very good
7,954 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,385 reviews
Delta
8.0
Very good
7,954 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,407 reviews
Delta
8.0
Very good
7,954 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 20h. 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 Lufthansa and KLM. Delta is priced at 34% 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, January is the cheapest month in which you can book a flight from Seattle to Billund (average of $564). Flying from Seattle to Billund in June is currently the most expensive (average of $1,053). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$421Average$765FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$562Average$672FlexibilityNo cancel feeOn-time76%
KLMCheapest$582Average$617FlexibilityNo cancel feeOn-time75%

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