$296 Cheap Flights from Washington (IAD) to Billund (BLL)

View $296 flight on Thu, Dec 25, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Billund (BLL)

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Cheap Flights from Washington to Billund (IAD-BLL)

Prices were available within the past 7 days and start at $296 for one-way flights and $541 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Sun, Aug 10 - Mon, Aug 25
IAD
Washington
BLL
Billund
$541 Roundtrip, found 6 days ago
$541
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Sun, Aug 10 from Washington to Billund, returning Mon, Aug 25, priced at $541 found 6 days ago
Lufthansa
Sat, Aug 16 - Wed, Aug 20
IAD
Washington
BLL
Billund
$542 Roundtrip, found 22 hours ago
$542
Roundtrip
found 22 hours ago
Select Lufthansa flight, departing Sat, Aug 16 from Washington to Billund, returning Wed, Aug 20, priced at $542 found 22 hours ago
Lufthansa
Sun, Aug 10 - Mon, Aug 25
IAD
Washington
BLL
Billund
$544 Roundtrip, found 6 days ago
$544
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Sun, Aug 10 from Washington to Billund, returning Mon, Aug 25, priced at $544 found 6 days ago
British Airways
Mon, Dec 1 - Sun, Dec 7
IAD
Washington
BLL
Billund
$545 Roundtrip, found 2 days ago
$545
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Dec 1 from Washington to Billund, returning Sun, Dec 7, priced at $545 found 2 days ago
Scandinavian Airlines
Sun, Sep 21 - Mon, Sep 29
IAD
Washington
BLL
Billund
$545 Roundtrip, found 3 days ago
$545
Roundtrip
found 3 days ago
Select Scandinavian Airlines flight, departing Sun, Sep 21 from Washington to Billund, returning Mon, Sep 29, priced at $545 found 3 days ago
Air Canada
Mon, Dec 1 - Sun, Dec 7
IAD
Washington
BLL
Billund
$548 Roundtrip, found 2 days ago
$548
Roundtrip
found 2 days ago
Select Air Canada flight, departing Mon, Dec 1 from Washington to Billund, returning Sun, Dec 7, priced at $548 found 2 days ago
United
Mon, Aug 11 - Tue, Aug 19
IAD
Washington
BLL
Billund
$548 Roundtrip, found 3 days ago
$548
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 11 from Washington to Billund, returning Tue, Aug 19, priced at $548 found 3 days ago
Lufthansa
Thu, Dec 11 - Fri, Apr 10
IAD
Washington
BLL
Billund
$550 Roundtrip, found 3 days ago
$550
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Thu, Dec 11 from Washington to Billund, returning Fri, Apr 10, priced at $550 found 3 days ago
Swiss International Air Lines
Sun, Aug 10 - Mon, Aug 25
IAD
Washington
BLL
Billund
$552 Roundtrip, found 6 days ago
$552
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Sun, Aug 10 from Washington to Billund, returning Mon, Aug 25, priced at $552 found 6 days ago
Air Canada
Mon, Dec 1 - Sun, Dec 7
IAD
Washington
BLL
Billund
$554 Roundtrip, found 2 days ago
$554
Roundtrip
found 2 days ago
Select Air Canada flight, departing Mon, Dec 1 from Washington to Billund, returning Sun, Dec 7, priced at $554 found 2 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 $662
BLL
Billund
CheapestClosest
Average driving time to city center7 min
Flights from $662
Flights from Washington (IAD) to Billund (BLL)
Origin airport
Washington Dulles Intl.
Destination airport
Billund
Airlines serving
Air Canada, Air France, British Airways, Delta, Finnair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$541
Distance
3933 mi

Washington to Billund Flights

The cheapest times to fly from Washington 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 Washington to Billund are during the month of August. You can find some of the cheapest flights from Washington to Billund with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Billund

Sunday is one of the best days to book for cheap flights from Washington 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 Washington 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 Washington to Billund in 2025. You can also book with separate airlines for your outbound and return journeys, from $296 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 Washington 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 Washington 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.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL) cost?
Discover the latest flight deals from IAD to BLL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to BLL?
The cheapest flights from IAD to BLL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to BLL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to BLL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL)?
There aren't any daily direct flights from Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from IAD to BLL?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL)?
Opt for a flight from Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**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 Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL) last-minute?
Holding off until just before your departure to book your flight from IAD to BLL often results in higher prices. While you may find some last-minute offers, there's no guarantee. Keep your travel plans flexible to maximize your chances of scoring a bargain.
Is it cheaper to book an IAD to BLL flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to BLL flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place will take the hassle out of travel planning. Simply secure your flights and choose from our wide range of stays, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Billund Airport (BLL)?
If you booked your IAD to BLL flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.