$380 Cheap Flights from Seattle (SEA) to Billund (BLL)

View $380 flight on Tue, Mar 3, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Billund (BLL)

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Cheap Flights from Seattle to Billund (SEA-BLL)

Prices were available within the past 7 days and start at $380 for one-way flights and $496 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Wed, May 13 - Mon, May 25
SEA
Seattle
BLL
Billund
$496 Roundtrip, found 1 day ago
$496
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Wed, May 13 from Seattle to Billund, returning Mon, May 25, priced at $496 found 1 day ago
Icelandair
Thu, May 14 - Mon, May 25
SEA
Seattle
BLL
Billund
$499 Roundtrip, found 6 days ago
$499
Roundtrip
found 6 days ago
Select Icelandair flight, departing Thu, May 14 from Seattle to Billund, returning Mon, May 25, priced at $499 found 6 days ago
Icelandair
Thu, May 14 - Mon, May 25
SEA
Seattle
BLL
Billund
$500 Roundtrip, found 6 days ago
$500
Roundtrip
found 6 days ago
Select Icelandair flight, departing Thu, May 14 from Seattle to Billund, returning Mon, May 25, priced at $500 found 6 days ago
British Airways
Tue, Feb 17 - Tue, Feb 24
SEA
Seattle
BLL
Billund
$503 Roundtrip, found 4 days ago
$503
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Feb 17 from Seattle to Billund, returning Tue, Feb 24, priced at $503 found 4 days ago
British Airways
Tue, Feb 17 - Tue, Feb 24
SEA
Seattle
BLL
Billund
$508 Roundtrip, found 4 days ago
$508
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Feb 17 from Seattle to Billund, returning Tue, Feb 24, priced at $508 found 4 days ago
British Airways
Wed, May 13 - Mon, May 25
SEA
Seattle
BLL
Billund
$515 Roundtrip, found 1 day ago
$515
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, May 13 from Seattle to Billund, returning Mon, May 25, priced at $515 found 1 day ago
British Airways
Wed, May 13 - Mon, May 25
SEA
Seattle
BLL
Billund
$520 Roundtrip, found 1 day ago
$520
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, May 13 from Seattle to Billund, returning Mon, May 25, priced at $520 found 1 day ago
Delta
Tue, Apr 7 - Fri, Apr 10
SEA
Seattle
BLL
Billund
$522 Roundtrip, found 5 days ago
$522
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Apr 7 from Seattle to Billund, returning Fri, Apr 10, priced at $522 found 5 days ago
Scandinavian Airlines
Thu, Jan 8 - Wed, Jan 21
SEA
Seattle
BLL
Billund
$526 Roundtrip, found 1 day ago
$526
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Thu, Jan 8 from Seattle to Billund, returning Wed, Jan 21, priced at $526 found 1 day ago
Air Canada
Thu, Nov 27 - Wed, Dec 3
SEA
Seattle
BLL
Billund
$533 Roundtrip, found 4 days ago
$533
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 27 from Seattle to Billund, returning Wed, Dec 3, priced at $533 found 4 days ago

Alternative airports near Billund

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Billund BLL. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $557
BLL
Billund
CheapestClosest
Average driving time to city center7 min
Flights from $557

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL) cost?
Get a cheap one-way flight from $380 or cheap return flight from $496 from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL)?
The cheapest month to fly from SEA to BLL is May, when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SEA to BLL. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to BLL?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL)?
To touch down at Billund Airport (BLL) without delays, opt for a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL) last-minute?
Last-minute bookings from SEA to BLL are typically more expensive. To secure the best rates, start looking for flights well in advance. That being said, if you're flexible with your travel plans, you may score a cheap fare just before your departure.
Is it cheaper to book a SEA to BLL flight and hotel package?
You'll generally save money by booking a SEA to BLL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've chosen your preferred accommodations and flights, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Billund Airport (BLL)?
It's usually possible to reschedule or cancel your SEA to BLL flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Billund
Airlines serving
Air Canada, Air France, British Airways, Delta, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United
Roundtrip price
$495
Distance
4773 mi

Book with confidence

Seattle to Billund Flights

The cheapest times to fly from Seattle to Billund

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Billund are during the month of May. You can find some of the cheapest flights from Seattle to Billund with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Billund

Sunday is one of the best days to book for cheap flights from Seattle to Billund: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Billund

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Billund in 2025. You can also book with separate airlines for your outbound and return journeys, from $380 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Billund flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Billund airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Billund Flights

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*Available to One Key members.