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Cheap flights from Seattle to Billund from $509

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Billund departing on 1/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Billund

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:35 pm - 1:30 pm
SEA
-
BLL
39h 55m2 stops
United Airlines Logo
6:30 am - 9:12 pm
BLL
-
SEA
23h 42m3 stops
$509United Airlines
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
12:25 pm - 1:30 pm
SEA
-
BLL
40h 05m2 stops
United Airlines Logo
6:30 am - 9:12 pm
BLL
-
SEA
23h 42m3 stops
$514United Airlines
Sat, Jan 24 - Tue, Jan 27
Air France Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m1 stop
Air France Logo
6:30 am - 1:05 pm
BLL
-
SEA
15h 35m1 stop
$517Air France
Fri, Feb 20 - Sun, Mar 1
Air France Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m1 stop
Air France Logo
6:30 am - 1:05 pm
BLL
-
SEA
15h 35m1 stop
$518Air France
Fri, Feb 20 - Sun, Mar 1
United Airlines Logo
12:40 pm - 10:00 am
SEA
-
BLL
36h 20m3 stops
United Airlines Logo
6:30 am - 9:12 pm
BLL
-
SEA
23h 42m3 stops
$519United Airlines
Sat, Jan 24 - Tue, Jan 27
Multiple Airlines Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m1 stop
Multiple Airlines Logo
6:00 am - 2:44 pm
BLL
-
SEA
17h 44m2 stops
$524Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m1 stop
Multiple Airlines Logo
6:00 am - 2:44 pm
BLL
-
SEA
17h 44m2 stops
$525Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
KLM Logo
9:50 am - 11:20 am
SEA
-
BLL
16h 30m2 stops
KLM Logo
6:00 am - 2:44 pm
BLL
-
SEA
17h 44m2 stops
$536KLM
Fri, Feb 20 - Sun, Mar 1
KLM Logo
9:50 am - 11:20 am
SEA
-
BLL
16h 30m2 stops
KLM Logo
6:00 am - 2:44 pm
BLL
-
SEA
17h 44m2 stops
$537KLM
Fri, Feb 20 - Sun, Mar 1
KLM Logo
9:50 am - 11:20 am
SEA
-
BLL
16h 30m2 stops
KLM Logo
6:00 am - 2:44 pm
BLL
-
SEA
17h 44m2 stops
$538KLM
Fri, Feb 20 - Sun, Mar 1

United Airlines flights from Seattle to Billund

Our best United Airlines deals on Seattle to Billund flight tickets
United Airlines
Jan 24
SEA12:35 pmSeattle/Tacoma Intl
39h 55m
2 stops
BLL1:30 pmBillund
Jan 27
BLL6:30 amBillund
23h 42m
3 stops
SEA9:12 pmSeattle/Tacoma Intl
$509
Find similar
United Airlines
Jan 24
SEA12:25 pmSeattle/Tacoma Intl
40h 05m
2 stops
BLL1:30 pmBillund
Jan 27
BLL6:30 amBillund
23h 42m
3 stops
SEA9:12 pmSeattle/Tacoma Intl
$514
Find similar
United Airlines
Jan 24
SEA12:40 pmSeattle/Tacoma Intl
39h 50m
3 stops
BLL1:30 pmBillund
Jan 27
BLL6:30 amBillund
23h 42m
3 stops
SEA9:12 pmSeattle/Tacoma Intl
$519
Find similar

Air France flights from Seattle to Billund

Our best Air France deals on Seattle to Billund flight tickets
Air France
Feb 20
SEA2:15 pmSeattle/Tacoma Intl
23h 45m
1 stop
BLL11:00 pmBillund
Mar 1
BLL6:30 amBillund
15h 35m
1 stop
SEA1:05 pmSeattle/Tacoma Intl
$517
Find similar
Air France
May 13
SEA1:45 pmSeattle/Tacoma Intl
14h 45m
1 stop
BLL1:30 pmBillund
May 23
BLL6:00 amBillund
14h 42m
1 stop
SEA11:42 amSeattle/Tacoma Intl
$564
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 27, 2025.
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

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 1/24

12:35 pm-1:30 pm

2 stops39h 55m

Billund

Tue 1/27

6:30 am-9:12 pm

3 stops23h 42m

$509

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 1/24

12:25 pm-1:30 pm

2 stops40h 05m

Billund

Tue 1/27

6:30 am-9:12 pm

3 stops23h 42m

$514

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-11:00 pm

1 stop23h 45m

Billund

Sun 3/1

6:30 am-1:05 pm

1 stop15h 35m

$517

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-11:00 pm

1 stop23h 45m

Billund

Sun 3/1

6:30 am-1:05 pm

1 stop15h 35m

$518

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 1/24

12:40 pm-10:00 am

3 stops36h 20m

Billund

Tue 1/27

6:30 am-9:12 pm

3 stops23h 42m

$519

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-11:00 pm

1 stop23h 45m

Billund

Sun 3/1

6:00 am-2:44 pm

2 stops17h 44m

$524

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-11:00 pm

1 stop23h 45m

Billund

Sun 3/1

6:00 am-2:44 pm

2 stops17h 44m

$525

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

9:50 am-11:20 am

2 stops16h 30m

Billund

Sun 3/1

6:00 am-2:44 pm

2 stops17h 44m

$536

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

9:50 am-11:20 am

2 stops16h 30m

Billund

Sun 3/1

6:00 am-2:44 pm

2 stops17h 44m

$537

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

9:50 am-11:20 am

2 stops16h 30m

Billund

Sun 3/1

6:00 am-2:44 pm

2 stops17h 44m

$538

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Billund from

How to get the cheapest flight ticket from Seattle to Billund

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Billund?

In general, March is the cheapest month to fly from Seattle to Billund. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $590. If you aren’t able to travel to Billund during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $597.

What is the cheapest day to depart on your flight to Billund?

The cheapest day to depart from Seattle to Billund is on a Friday when prices can be found for as low as $676. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Billund for around $1,018.

What is the cheapest time of day to depart on your flight to Billund?

According to our data, the cheapest time of day to fly to Billund is in the morning. momondo users have found flights departing from Seattle to Billund in the morning for as low as $781. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $1,057.

When to book flights from Seattle to Billund

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Billund according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Billund (SEA to BLL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Billund

Fastest flight time

18h 00m

Direct flights

None
The fastest flight from Seattle to Billund takes 18h 00m
There are no direct flights from Seattle to Billund. There are no popular flight routes from Seattle to Billund.
Search flight deals

  • How far is Seattle/Tacoma Intl to Billund by plane?

    The distance between Seattle/Tacoma Intl and Billund is about 4761.2 mi. By plane, this route typically takes 18h 00m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Billund Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Billund Airport refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Billund Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Billund Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Billund Airport.

  • What documentation or ID do you need to fly to Billund Airport?

    The travel and health documents required for your trip to Billund Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Billund Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Billund?

Best airlines flying from Seattle to Billund

Compare and see reviews for airlines that fly from Seattle to Billund with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $421Free CancellationRating
7.9
8,018 reviews
Search Delta flights
KLMPriceFrom $582Free CancellationRating
7.7
1,434 reviews
Search KLM flights
LufthansaPriceFrom $597Free CancellationRating
6.8
7,655 reviews
Search Lufthansa flights

Traveling to a place near Billund?

Book flights to Billund if you plan to visit one of these locations
Vejle
Ribe
Middelfart
Kolding
Horsens

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Billund?

Finding the right flight to Billund from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Billund quick and easy, saving you time and money.

Can I find flights from Seattle to Billund with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Billund from Seattle with this policy.

How can momondo help me find flights from Seattle to Billund?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Billund from Seattle.

I’m not ready to book a flight from Seattle to Billund right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Billund from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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