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$415+ Cheap flights from Billund (BLL) to Seattle (SEA)

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — SEA
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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The best prices from Billund to Seattle/Tacoma Intl are usually found in January or February, booked 87 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from Billund to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Billund (BLL) to Seattle (SEA). 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 enero 30, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$415
(Ticket)

Popular in

July

Cheapest in

January

Average price

$496
Provider with most accurate pricing for Billund-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Billund-Seattle/Tacoma Intl flights.
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From Billund to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 15% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Billund to Seattle

Cheapest flights from Billund to Seattle
Explore the most affordable flight options available from Billund to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 30, 2025.

This Ticket deal was found by Cheapflights users on 1/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/64:05 pmBLL - SEA
1 stop33h 50mMultiple Airlines
mar. 3/112:35 pmSEA - BLL
1 stop16h 50mMultiple Airlines
Deal found 1/30$415
This Ticket deal was found by Cheapflights users on 1/28. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/134:05 pmBLL - SEA
1 stop28h 15mBritish Airways
mié. 2/196:50 pmSEA - BLL
1 stop32h 15mBritish Airways
Deal found 1/28$419
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/64:05 pmBLL - SEA
1 stop28h 15mAmerican Airlines
mar. 3/112:35 pmSEA - BLL
1 stop16h 50mAmerican Airlines
Deal found 1/30$487
This Ticket deal was found by Cheapflights users on 1/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/286:15 amBLL - SEA
2 stops21h 30mLufthansa
vie. 3/72:00 pmSEA - BLL
2 stops24h 20mLufthansa
Deal found 1/30$527
This United Airlines deal was found by Cheapflights users on 1/30. 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.
jue. 3/66:30 amBLL - SEA
1 stop14h 40mUnited Airlines
mar. 3/112:44 pmSEA - BLL
3 stops38h 31mUnited Airlines
Deal found 1/30$544
This Expedia deal was found by Cheapflights users on 1/30. 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.
jue. 3/612:05 pmBLL - SEA
2 stops19h 20mKLM
mar. 3/1112:20 pmSEA - BLL
2 stops15h 00mKLM
Deal found 1/30$700
This Finnair deal was found by Cheapflights users on 1/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/22:10 pmBLL - SEA
1 stop34h 50mFinnair
lun. 7/215:40 pmSEA - BLL
1 stop34h 45mFinnair
Deal found 1/29$780
This Delta deal was found by Cheapflights users on 1/29. 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.
mar. 7/16:45 amBLL - SEA
2 stops18h 00mDelta
mié. 7/237:30 amSEA - BLL
2 stops17h 05mDelta
Deal found 1/29$789
This Air France deal was found by Cheapflights users on 1/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/36:45 amBLL - SEA
1 stop13h 30mAir France
jue. 7/246:30 pmSEA - BLL
1 stop18h 55mAir France
Deal found 1/29$842
This Air Canada deal was found by Cheapflights users on 1/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/122:35 pmBLL - SEA
2 stops36h 53mAir Canada
dom. 4/207:05 pmSEA - BLL
2 stops33h 55mAir Canada
Deal found 1/30$918

Find flights from Billund to Seattle within your budget

Customize your flight search to find flights from Billund to Seattle 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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BillundSeattle

BLL - SEA

BLLSEA

Billund

jue. 3/6

4:05 pm-4:55 pm

1 stop33h 50m

Seattle/Tacoma Intl

mar. 3/11

2:35 pm-3:25 pm

1 stop16h 50m

$415

BillundSeattle

BLL - SEA

BLLSEA

Billund

jue. 2/13

4:05 pm-11:20 am

1 stop28h 15m

Seattle/Tacoma Intl

mié. 2/19

6:50 pm-12:05 pm

1 stop32h 15m

$419

BillundSeattle

BLL - SEA

BLLSEA

Billund

jue. 3/6

4:05 pm-11:20 am

1 stop28h 15m

Seattle/Tacoma Intl

mar. 3/11

2:35 pm-3:25 pm

1 stop16h 50m

$487

BillundSeattle

BLL - SEA

BLLSEA

Billund

vie. 2/28

6:15 am-6:45 pm

2 stops21h 30m

Seattle/Tacoma Intl

vie. 3/7

2:00 pm-11:20 pm

2 stops24h 20m

$527

BillundSeattle

BLL - SEA

BLLSEA

Billund

jue. 3/6

6:30 am-12:10 pm

1 stop14h 40m

Seattle/Tacoma Intl

mar. 3/11

2:44 pm-1:15 pm

3 stops38h 31m

$544

BillundSeattle

BLL - SEA

BLLSEA

Billund

jue. 3/6

12:05 pm-10:25 pm

2 stops19h 20m

Seattle/Tacoma Intl

mar. 3/11

12:20 pm-11:20 am

2 stops15h 00m

$700

BillundSeattle

BLL - SEA

BLLSEA

Billund

mié. 7/2

2:10 pm-4:00 pm

1 stop34h 50m

Seattle/Tacoma Intl

lun. 7/21

5:40 pm-1:25 pm

1 stop34h 45m

$780

BillundSeattle

BLL - SEA

BLLSEA

Billund

mar. 7/1

6:45 am-3:45 pm

2 stops18h 00m

Seattle/Tacoma Intl

mié. 7/23

7:30 am-9:35 am

2 stops17h 05m

$789

BillundSeattle

BLL - SEA

BLLSEA

Billund

jue. 7/3

6:45 am-11:15 am

1 stop13h 30m

Seattle/Tacoma Intl

jue. 7/24

6:30 pm-10:25 pm

1 stop18h 55m

$842

BillundSeattle

BLL - SEA

BLLSEA

Billund

sáb. 4/12

2:35 pm-6:28 pm

2 stops36h 53m

Seattle/Tacoma Intl

dom. 4/20

7:05 pm-2:00 pm

2 stops33h 55m

$918

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

  • Most accurate provider: When it comes to deals on Billund-Seattle flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Billund-Seattle flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Billund-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billund-Seattle flights, Cheapflights users trust Expedia the most. Expedia 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 Billund-Seattle 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 Billund to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Billund 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.

Travel insights for flights from Billund to Seattle

Get recent, data-driven insights about flights from Billund to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Billund to Seattle. Price data was last updated on January 24, 2025.

To ensure you get the cheapest price possible for a flight from Billund to Seattle, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Billund to Seattle?

Currently, January is the cheapest month in which you can book a flight from Billund to Seattle (average of $238). Flying from Billund to Seattle in July is currently the most expensive (average of $411). 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.

What is the cheapest time of day to fly from BLL to SEA?

Find hourly flight availability from Billund to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 30, 2025.

When flying from Billund to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 8% versus a flight in the morning.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated enero 30, 2025.
Delta
8.0
Very good
8,454 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,335 reviews
Delta
8.0
Very good
8,454 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,454 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,475 reviews
Delta
8.0
Very good
8,454 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,913 reviews
Delta
8.0
Very good
8,454 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Billund to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Billund to Seattle round-trip?

    Cheapflights users have booked flights from Billund to Seattle round-trip from $419. Other airlines that can offer you cheap pricing are American Airlines, from $487, and Lufthansa, from $527. British Airways is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Billund to Seattle that include hotel bookings?

    Yes. In addition to deals on Billund to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billund to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billund to Seattle.

  • Can I find deals for business class flights from Billund to Seattle?

    Yes. Cheapflights offers flight deals from Billund to Seattle 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 Billund to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Billund to Seattle (average of $238). Flying from Billund to Seattle in July is currently the most expensive (average of $411). 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

Traveling to a place near Billund?

Book flights to Billund if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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Alternative routes for Billund to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Billund to Seattle

Discover the top airline that operate flights from Billund to Seattle. 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 enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$505Average$966FlexibilityNo cancel feeOn-time75%
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