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

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

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

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$546 Cheap Flights from Billund to Seattle in 2026

Q: What is the typical price of a round-trip flight between Billund and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $967 to $644. The lowest price recently found on this route was $546.

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Find the cheapest flights from Billund to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:50 pm - 11:35 am

BLL

SEA

31h 45m

1 stop

8:20 pm - 11:05 am

SEA

BLL

29h 45m

1 stop

$546British Airways

Thu, Oct 1 - Mon, Oct 5

3:20 pm - 11:35 am

BLL

SEA

29h 15m

1 stop

1:30 pm - 8:25 pm

SEA

BLL

21h 55m

1 stop

$547British Airways

Tue, Oct 6 - Sat, Oct 10

3:20 pm - 11:35 am

BLL

SEA

29h 15m

1 stop

1:30 pm - 8:25 pm

SEA

BLL

21h 55m

1 stop

$548British Airways

Tue, Oct 6 - Sat, Oct 10

6:05 am - 9:52 am

BLL

SEA

36h 47m

2 stops

5:00 am - 2:05 pm

SEA

BLL

24h 05m

2 stops

$713United Airlines

Tue, Oct 6 - Sat, Oct 10

6:00 am - 6:32 pm

BLL

SEA

21h 32m

2 stops

10:30 am - 2:10 pm

SEA

BLL

18h 40m

2 stops

$714Air Canada

Thu, Oct 1 - Mon, Oct 5

6:05 am - 6:32 pm

BLL

SEA

21h 27m

2 stops

11:13 pm - 10:10 am

SEA

BLL

25h 57m

2 stops

$715United Airlines

Tue, Oct 6 - Sat, Oct 10

6:00 am - 11:47 am

BLL

SEA

14h 47m

1 stop

2:15 pm - 11:00 pm

SEA

BLL

23h 45m

1 stop

$717Air France

Sat, Nov 28 - Wed, Jan 6

6:05 am - 8:24 pm

BLL

SEA

23h 19m

3 stops

11:13 pm - 10:10 am

SEA

BLL

25h 57m

2 stops

$718United Airlines

Tue, Oct 6 - Sat, Oct 10

6:05 am - 8:24 pm

BLL

SEA

23h 19m

3 stops

11:13 pm - 10:10 am

SEA

BLL

25h 57m

2 stops

$720United Airlines

Tue, Oct 6 - Sat, Oct 10

6:35 am - 12:00 pm

BLL

SEA

14h 25m

1 stop

10:45 am - 1:25 pm

SEA

BLL

41h 40m

3 stops

$721United Airlines

Sat, Nov 28 - Wed, Jan 6

Air France flights from Billund to Seattle

Our best Air France deals on Billund to Seattle flight tickets

Air France

Nov 28

BLL6:00 amBillund

14h 47m

1 stop

SEA11:47 amSeattle/Tacoma Intl

Jan 6

SEA2:15 pmSeattle/Tacoma Intl

23h 45m

1 stop

BLL11:00 pmBillund

$717

Air France

Jul 5

BLL6:40 amBillund

13h 35m

1 stop

SEA11:15 amSeattle/Tacoma Intl

Jul 22

SEA1:45 pmSeattle/Tacoma Intl

12h 15m

1 stop

BLL11:00 amBillund

$950

Air France

Jul 3

BLL6:40 amBillund

13h 35m

1 stop

SEA11:15 amSeattle/Tacoma Intl

Jul 22

SEA1:45 pmSeattle/Tacoma Intl

12h 15m

1 stop

BLL11:00 amBillund

$989

Delta flights from Billund to Seattle

Our best Delta deals on Billund to Seattle flight tickets

Delta

Jun 19

BLL6:00 amBillund

26h 59m

2 stops

SEA11:59 pmSeattle/Tacoma Intl

Jun 23

SEA9:30 amSeattle/Tacoma Intl

16h 30m

2 stops

BLL11:00 amBillund

$815

Delta

Jul 7

BLL10:15 amBillund

18h 48m

2 stops

SEA8:03 pmSeattle/Tacoma Intl

Jul 28

SEA5:40 pmSeattle/Tacoma Intl

15h 15m

1 stop

BLL5:55 pmBillund

$885

Delta

Jul 7

BLL6:40 amBillund

19h 47m

1 stop

SEA5:27 pmSeattle/Tacoma Intl

Jul 28

SEA5:40 pmSeattle/Tacoma Intl

13h 05m

1 stop

BLL3:45 pmBillund

$901

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BillundSeattle

BLL - SEA

BLLSEA

Billund

Thu 10/1

12:50 pm-11:35 am

1 stop31h 45m

Seattle/Tacoma Intl

Mon 10/5

8:20 pm-11:05 am

1 stop29h 45m

$546

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 10/6

3:20 pm-11:35 am

1 stop29h 15m

Seattle/Tacoma Intl

Sat 10/10

1:30 pm-8:25 pm

1 stop21h 55m

$547

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 10/6

3:20 pm-11:35 am

1 stop29h 15m

Seattle/Tacoma Intl

Sat 10/10

1:30 pm-8:25 pm

1 stop21h 55m

$548

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 10/6

6:05 am-9:52 am

2 stops36h 47m

Seattle/Tacoma Intl

Sat 10/10

5:00 am-2:05 pm

2 stops24h 05m

$713

BillundSeattle

BLL - SEA

BLLSEA

Billund

Thu 10/1

6:00 am-6:32 pm

2 stops21h 32m

Seattle/Tacoma Intl

Mon 10/5

10:30 am-2:10 pm

2 stops18h 40m

$714

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 10/6

6:05 am-6:32 pm

2 stops21h 27m

Seattle/Tacoma Intl

Sat 10/10

11:13 pm-10:10 am

2 stops25h 57m

$715

Quickest round-trip

BillundSeattle

BLL - SEA

BLLSEA

Billund

Sat 11/28

6:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Wed 1/6

2:15 pm-11:00 pm

1 stop23h 45m

$717

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 10/6

6:05 am-8:24 pm

3 stops23h 19m

Seattle/Tacoma Intl

Sat 10/10

11:13 pm-10:10 am

2 stops25h 57m

$718

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 10/6

6:05 am-8:24 pm

3 stops23h 19m

Seattle/Tacoma Intl

Sat 10/10

11:13 pm-10:10 am

2 stops25h 57m

$720

BillundSeattle

BLL - SEA

BLLSEA

Billund

Sat 11/28

6:35 am-12:00 pm

1 stop14h 25m

Seattle/Tacoma Intl

Wed 1/6

10:45 am-1:25 pm

3 stops41h 40m

$721

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Billund to Seattle

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 typical price of a round-trip flight between Billund and Seattle?

What is the cheapest month to fly to Seattle?

In general, December is the cheapest month to fly from Billund to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $553. If you don’t want to visit Seattle in December, then you should wait until April to fly from Billund, when ticket prices are also cheap, with an average price of $589.

How far in advance should I book a flight from Billund to Seattle?

You are more likely to see cheaper flights to Seattle from Billund when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $748 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Billund for as low as $652 on momondo.

When to book flights from Billund to Seattle

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

Estimated round-trip price

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

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

Fastest flight time	14h 25m
Direct flights	None

The fastest flight from Billund to Seattle takes 14h 25m

There are no direct flights from Billund to Seattle. There are no popular flight routes from Billund to Seattle.

Search flight deals

Frequently asked questions about flying from Billund to Seattle

How far is Billund to Seattle/Tacoma Intl by plane?
The straight-line distance from Billund to Seattle/Tacoma Intl is 4761.2 mi. By plane, this route typically takes 14h 25m.
When did momondo last update prices for flights from Billund Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Billund Airport to Seattle/Tacoma Intl Airport are updated daily.
How old do you have to be to fly from Billund Airport to Seattle/Tacoma Intl 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 Billund Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Lakewood

Tukwila

Puyallup

Marysville

Cle Elum

Federal Way

Fife

Centralia

Shoreline

Westport

Tumwater

Why use momondo?

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

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

Flights from Billund to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Seattle from Billund. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Billund to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.