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Dulles Intl

$504+ Cheap flights from Billund (BLL) to Dulles Intl (IAD)

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — IAD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Billund to Washington, D.C. Dulles Intl are usually found in November or February, booked 71 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Billund to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Billund (BLL) to Dulles Intl (IAD). 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 September 11, 2025.

Round-trip from

$510
(Air Canada)

Popular in

May

Cheapest in

November

Average price

$545
From Billund to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Billund to Dulles Intl

Cheapest flights from Billund to Dulles Intl
Explore the most affordable flight options available from Billund to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/8. 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.
Wed 12/310:20 amBLL - IAD
2 stops17h 01mUnited Airlines
Sun 12/710:06 pmIAD - BLL
2 stops29h 34mUnited Airlines
Deal found 9/8$504
This Flightnetwork deal was found by Cheapflights users on 9/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 amBLL - IAD
1 stop15h 50mLufthansa
Mon 9/296:10 pmIAD - BLL
1 stop13h 50mLufthansa
Deal found 9/9$510
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Wed 12/310:20 amBLL - IAD
2 stops16h 06mAir Canada
Sun 12/74:30 pmIAD - BLL
2 stops15h 00mAir Canada
Deal found 9/9$511
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 12/272:15 pmBLL - IAD
1 stop30h 20mUnited Airlines
Thu 1/112:35 pmIAD - BLL
2 stops15h 10mUnited Airlines
Deal found 9/11$524
This AirNGo deal was found by Cheapflights users on 9/9. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:15 pmBLL - IAD
1 stop31h 35mLufthansa
Thu 1/110:55 pmIAD - BLL
2 stops18h 25mLufthansa
Deal found 9/9$565
This Gurufare deal was found by Cheapflights users on 9/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amBLL - IAD
1 stop13h 30mMultiple Airlines
Sun 10/1910:15 pmIAD - BLL
1 stop29h 55mMultiple Airlines
Deal found 9/10$585
This Ticket deal was found by Cheapflights users on 9/11. 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.
Thu 9/186:00 amBLL - IAD
1 stop15h 35mAir France
Wed 9/246:30 pmIAD - BLL
1 stop15h 55mAir France
Deal found 9/11$598
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 9/2411:45 amBLL - IAD
1 stop13h 30mDelta
Sun 9/289:20 pmIAD - BLL
1 stop31h 45mDelta
Deal found 9/9$607
This Delta deal was found by Cheapflights users on 9/11. 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.
Thu 9/186:00 amBLL - IAD
1 stop15h 35mDelta
Wed 9/248:17 pmIAD - BLL
2 stops14h 08mDelta
Deal found 9/11$621
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 9/256:00 amBLL - IAD
1 stop15h 35mDelta
Mon 9/298:17 pmIAD - BLL
2 stops14h 08mDelta
Deal found 9/9$628

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billund to Dulles Intl 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 September 11, 2025.
Use the filters below to find and compare flights from Billund to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Billund

Fly to

Dulles Intl

Route

Depart

Return

Price

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Wed 12/3

6:35 am-9:21 pm

2 stops20h 46m

Washington, D.C. Dulles Intl

Sun 12/7

6:00 pm-1:30 pm

1 stop13h 30m

$504

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Thu 9/25

6:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Mon 9/29

6:10 pm-2:00 pm

1 stop13h 50m

$510

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Wed 12/3

10:20 am-8:26 pm

2 stops16h 06m

Washington, D.C. Dulles Intl

Sun 12/7

4:30 pm-1:30 pm

2 stops15h 00m

$510

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Sat 12/27

2:15 pm-2:35 pm

1 stop30h 20m

Washington, D.C. Dulles Intl

Thu 1/1

12:35 pm-9:45 am

2 stops15h 10m

$524

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Sat 12/27

2:15 pm-3:50 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Thu 1/1

10:55 pm-11:20 pm

2 stops18h 25m

$565

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Thu 10/16

6:00 am-1:30 pm

1 stop13h 30m

Washington, D.C. Dulles Intl

Sun 10/19

10:15 pm-10:10 am

1 stop29h 55m

$585

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Wed 9/24

11:45 am-7:15 pm

1 stop13h 30m

Washington, D.C. Dulles Intl

Sun 9/28

9:20 pm-11:05 am

1 stop31h 45m

$607

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Thu 9/25

6:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 9/29

8:17 pm-4:25 pm

2 stops14h 08m

$628

BillundWashington, D.C.

BLL - IAD

BLLIAD

Billund

Wed 9/24

10:50 am-8:55 pm

2 stops16h 05m

Washington, D.C. Dulles Intl

Sun 9/28

10:20 pm-12:25 pm

1 stop32h 05m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Best time to book a flight from Billund to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Billund to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Billund to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Billund to Dulles Intl. Price data was last updated on August 29, 2025.

The price you pay for your flight from Billund to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Billund to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Billund to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Billund to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Lufthansa from Billund to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,409 reviews

Entertainment

6.4

Food

6.3

Overall

6.8

Comfort

6.8

Crew

7.6

Boarding

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,409 reviews
Lufthansa
6.8
Okay
7,409 reviews

Entertainment

6.4

Food

6.3

Overall

6.8

Comfort

6.8

Crew

7.6

Boarding

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

Related info for your journey

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

  • What airport do you fly from for flights from Billund to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Billund, you will be flying from Billund, which is the city’s only airport. Billund (BLL) is located 1.7 mi from the center of Billund. There are 0 flights from Billund to Washington, D.C. Dulles Intl per day from 1 airline.

  • How long is the flight from Billund to Washington, D.C. Dulles Intl Airport?

    A quick flight from Billund to Washington, D.C. Dulles Intl Airport can take about 15h 50m. United Airlines provides one of the quickest options available for as low as $510. Billund and Washington, D.C. Dulles Intl Airport are separated by a distance of 3931 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Billund to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $435, Lufthansa will fly you from Billund to Washington, D.C. Dulles Intl Airport and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. This flight start at 23% lower than the current average price 3 months from now.

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

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

  • How can I find direct flights from Billund to Dulles Intl?

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

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

    Yes. Cheapflights offers flight deals from Billund to Dulles Intl 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 Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Billund to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Billund to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

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Alternative routes for Billund to Dulles Intl

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 Dulles Intl

Discover the top airline that operate flights from Billund to Dulles Intl. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$435Average$448FlexibilityNo cancel feeOn-time76%

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