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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 2/28. 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
12:15 pm - 6:10 pm
SEA
-
BLL
44h 55m
2 stops
United Airlines Logo
2:15 pm - 12:59 am
BLL
-
SEA
19h 44m
2 stops
$509United Airlines
Sat, Feb 28 - Tue, Mar 3
Multiple Airlines Logo
2:15 pm - 11:00 pm
SEA
-
BLL
23h 45m
1 stop
Multiple Airlines Logo
6:00 am - 11:35 am
BLL
-
SEA
14h 35m
1 stop
$517Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
Delta Logo
7:10 am - 9:40 am
SEA
-
BLL
17h 30m
2 stops
Delta Logo
6:00 am - 11:35 am
BLL
-
SEA
14h 35m
1 stop
$529Delta
Fri, Feb 20 - Sun, Mar 1
United Airlines Logo
11:59 pm - 1:20 pm
SEA
-
BLL
28h 21m
2 stops
United Airlines Logo
6:30 am - 9:01 pm
BLL
-
SEA
23h 31m
2 stops
$542United Airlines
Fri, Feb 20 - Sun, Mar 1
United Airlines Logo
5:10 pm - 1:20 pm
SEA
-
BLL
35h 10m
2 stops
United Airlines Logo
10:20 am - 11:18 am
BLL
-
SEA
33h 58m
2 stops
$552United Airlines
Wed, Feb 4 - Wed, Feb 11
United Airlines Logo
10:58 am - 1:25 pm
SEA
-
BLL
17h 27m
2 stops
United Airlines Logo
10:20 am - 12:10 pm
BLL
-
SEA
34h 50m
1 stop
$562United Airlines
Wed, Feb 4 - Wed, Feb 11
United Airlines Logo
7:15 am - 1:25 pm
SEA
-
BLL
21h 10m
3 stops
United Airlines Logo
10:20 am - 10:53 pm
BLL
-
SEA
20h 33m
2 stops
$652United Airlines
Wed, Mar 4 - Wed, Mar 11
British Airways Logo
8:20 pm - 2:30 pm
SEA
-
BLL
33h 10m
1 stop
British Airways Logo
9:30 pm - 10:47 pm
BLL
-
SEA
34h 17m
2 stops
$742British Airways
Sun, Apr 5 - Mon, Apr 13
British Airways Logo
8:20 pm - 2:30 pm
SEA
-
BLL
33h 10m
1 stop
British Airways Logo
9:30 pm - 11:35 am
BLL
-
SEA
23h 05m
1 stop
$794British Airways
Sun, Apr 5 - Mon, Apr 13
Multiple Airlines Logo
5:35 pm - 11:00 pm
SEA
-
BLL
20h 25m
1 stop
Multiple Airlines Logo
2:20 pm - 11:33 am
BLL
-
SEA
30h 13m
1 stop
$809Multiple Airlines
Mon, Jun 29 - Thu, Jul 9

United Airlines flights from Seattle to Billund

Our best United Airlines deals on Seattle to Billund flight tickets
United Airlines
Feb 28
SEA12:15 pmSeattle/Tacoma Intl
44h 55m
2 stops
BLL6:10 pmBillund
Mar 3
BLL2:15 pmBillund
19h 44m
2 stops
SEA12:59 amSeattle/Tacoma Intl
$509
United Airlines
Feb 20
SEA11:59 pmSeattle/Tacoma Intl
28h 21m
2 stops
BLL1:20 pmBillund
Mar 1
BLL6:30 amBillund
23h 31m
2 stops
SEA9:01 pmSeattle/Tacoma Intl
$542
United Airlines
Feb 4
SEA5:10 pmSeattle/Tacoma Intl
35h 10m
2 stops
BLL1:20 pmBillund
Feb 11
BLL10:20 amBillund
33h 58m
2 stops
SEA11:18 amSeattle/Tacoma Intl
$552

British Airways flights from Seattle to Billund

Our best British Airways deals on Seattle to Billund flight tickets
British Airways
Apr 5
SEA8:20 pmSeattle/Tacoma Intl
33h 10m
1 stop
BLL2:30 pmBillund
Apr 13
BLL9:30 pmBillund
34h 17m
2 stops
SEA10:47 pmSeattle/Tacoma Intl
$742
British Airways
Apr 5
SEA8:20 pmSeattle/Tacoma Intl
33h 10m
1 stop
BLL2:30 pmBillund
Apr 13
BLL9:30 pmBillund
23h 05m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$794
British Airways
Feb 28
SEA6:50 pmSeattle/Tacoma Intl
16h 10m
1 stop
BLL8:00 pmBillund
Mar 3
BLL1:10 pmBillund
20h 14m
2 stops
SEA12:24 amSeattle/Tacoma Intl
$863

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 January 19, 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

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 2/28

12:15 pm-6:10 pm

2 stops44h 55m

Billund

Tue 3/3

2:15 pm-12:59 am

2 stops19h 44m

$509

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-11:35 am

1 stop14h 35m

$517

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

7:10 am-9:40 am

2 stops17h 30m

Billund

Sun 3/1

6:00 am-11:35 am

1 stop14h 35m

$529

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Fri 2/20

11:59 pm-1:20 pm

2 stops28h 21m

Billund

Sun 3/1

6:30 am-9:01 pm

2 stops23h 31m

$542

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 2/4

5:10 pm-1:20 pm

2 stops35h 10m

Billund

Wed 2/11

10:20 am-11:18 am

2 stops33h 58m

$552

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 2/4

10:58 am-1:25 pm

2 stops17h 27m

Billund

Wed 2/11

10:20 am-12:10 pm

1 stop34h 50m

$562

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 3/4

7:15 am-1:25 pm

3 stops21h 10m

Billund

Wed 3/11

10:20 am-10:53 pm

2 stops20h 33m

$652

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 4/5

8:20 pm-2:30 pm

1 stop33h 10m

Billund

Mon 4/13

9:30 pm-10:47 pm

2 stops34h 17m

$742

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 4/5

8:20 pm-2:30 pm

1 stop33h 10m

Billund

Mon 4/13

9:30 pm-11:35 am

1 stop23h 05m

$794

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Mon 6/29

5:35 pm-11:00 pm

1 stop20h 25m

Billund

Thu 7/9

2:20 pm-11:33 am

1 stop30h 13m

$809

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, February 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 $561. If you aren’t able to travel to Billund during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $590.

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 55m

Direct flights

None
The fastest flight from Seattle to Billund takes 18h 55m
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 55m.

  • 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
KLMPriceFrom $524Free CancellationRating
7.7
1,441 reviews
Search KLM flights
DeltaPriceFrom $592Free CancellationRating
7.9
8,075 reviews
Search Delta flights
LufthansaPriceFrom $597Free CancellationRating
6.8
7,731 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
Kolding
Horsens
Middelfart

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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