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$438+ 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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — SEA
Mar 9 — Mar 161
Sun 3/9
Sun 3/16
1 adult, Economy
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The best prices from Billund to Seattle/Tacoma Intl are usually found in January or November, booked 78 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 March 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$438
(Ticket)

Popular in

July

Cheapest in

January

Average price

$595
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. 17% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 4, 2025.

This American Airlines deal was found by Cheapflights users on 3/4. 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.
Sat 4/124:25 pmBLL - SEA
1 stop28h 05mAmerican Airlines
Sun 4/201:30 pmSEA - BLL
1 stop17h 50mAmerican Airlines
Deal found 3/4$990
This Lufthansa deal was found by Cheapflights users on 3/4. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/122:35 pmBLL - SEA
1 stop30h 50mLufthansa
Sun 4/202:15 pmSEA - BLL
2 stops37h 10mLufthansa
Deal found 3/4$1,261
This Delta deal was found by Cheapflights users on 3/4. 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.
Sat 4/1211:55 amBLL - SEA
2 stops17h 42mDelta
Sun 4/209:35 amSEA - BLL
2 stops15h 00mDelta
Deal found 3/4$1,341
This Scandinavian Airlines deal was found by Cheapflights users on 3/4. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/126:25 amBLL - SEA
3 stops23h 29mMultiple Airlines
Sun 4/2011:25 amSEA - BLL
2 stops18h 40mMultiple Airlines
Deal found 3/4$2,652

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 March 4, 2025.

Fly from

Billund

Fly to

Seattle

Route

Depart

Return

Price

BillundSeattle

BLL - SEA

BLLSEA

Billund

Thu 3/20

4:05 pm-12:20 pm

1 stop28h 15m

Seattle/Tacoma Intl

Tue 3/25

2:35 pm-3:25 pm

1 stop16h 50m

$438

BillundSeattle

BLL - SEA

BLLSEA

Billund

Fri 3/21

1:05 pm-12:20 pm

1 stop31h 15m

Seattle/Tacoma Intl

Tue 3/25

2:35 pm-3:25 pm

1 stop16h 50m

$439

BillundSeattle

BLL - SEA

BLLSEA

Billund

Thu 3/20

6:30 am-1:10 pm

1 stop14h 40m

Seattle/Tacoma Intl

Tue 3/25

11:25 pm-1:15 pm

2 stops29h 50m

$519

BillundSeattle

BLL - SEA

BLLSEA

Billund

Fri 3/21

6:00 am-2:20 pm

2 stops16h 20m

Seattle/Tacoma Intl

Tue 3/25

7:00 am-12:30 pm

2 stops21h 30m

$522

BillundSeattle

BLL - SEA

BLLSEA

Billund

Thu 3/20

4:05 pm-12:20 pm

1 stop28h 15m

Seattle/Tacoma Intl

Mon 3/24

12:59 am-3:25 pm

2 stops30h 26m

$529

BillundSeattle

BLL - SEA

BLLSEA

Billund

Fri 3/21

6:00 am-11:13 pm

2 stops25h 13m

Seattle/Tacoma Intl

Tue 3/25

3:15 pm-3:30 pm

1 stop16h 15m

$563

BillundSeattle

BLL - SEA

BLLSEA

Billund

Sat 4/12

6:35 pm-11:45 am

1 stop26h 10m

Seattle/Tacoma Intl

Sun 4/20

6:10 pm-11:00 pm

1 stop19h 50m

$1,075

BillundSeattle

BLL - SEA

BLLSEA

Billund

Fri 3/21

6:00 am-6:25 pm

3 stops20h 25m

Seattle/Tacoma Intl

Tue 3/25

6:05 am-6:15 pm

2 stops28h 10m

$1,156

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Compare providers for flights from Billund to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billund to Seattle in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Billund-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billund-Seattle flight deals on Cheapflights vs. FlightHub >95% 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 FlightHub the most. FlightHub 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 February 28, 2025.

To ensure you get the cheapest price possible for a flight from Billund to Seattle, you should look to book at least 78 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 March 4, 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 March 4, 2025.
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

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
8,061 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

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
1,321 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

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
8,678 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

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

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

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 Canada
7.0
Good
8,833 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Comfort

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

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 $438. Other airlines that can offer you cheap pricing are United Airlines, from $519, and Lufthansa, from $522. British Airways is priced at 29% 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
Lacey
Ocean Shores
Tacoma
Leavenworth
Federal Way
Centralia
Olympia
Cle Elum
Lakewood
Mukilteo
Aberdeen
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale
Redmond

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