The cheapest times to fly from IAD to BLL are

  • January 8th to February 25th
  • April 2nd to May 6th
  • August 13th to November 18th (except the week of October 29th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAD to BLL is early to mid September. Prices can be as high as $1312 for Saturday flights during early August, or as low as $585 for Tuesday flights around early to mid September.


When to Fly to Billund

Flying from Washington, DC (IAD) to Billund (BLL) will usually cost between $635 to $1073 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $606. Due to high demand the most expensive time to fly is early August, with an average price of $1201. Planning your trip to low-cost times can easily save you $594 on economy flights and even more on first-class flights. Generally, any price below $783 can be considered a good price for a round-trip IAD to BLL flight.

See below for a graph of average weekly prices for the IAD to BLL route. All prices are for round-trip tickets in USD.

IAD to BLL Flight Prices

Compared to other flights, the IAD to BLL flight is cheaper than the average and costs less than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $85 (10%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $754. Return trip prices are from the BLL to IAD flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAD to BLL can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 8 hour 4 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from IAD to BLL while comparing.

Destination alternative #1: Kastrup Airport (CPH) in Copenhagen

  • 137 miles (220 km) away from BLL
  • Usually 15.52% less expensive than BLL
  • Nonstop flights available

See IAD to CPH flights

Destination alternative #2: Hamburg Airport (HAM) in Hamburg

  • 149 miles (240 km) away from BLL
  • Usually 1.53% less expensive than BLL
  • 1-layover flights available

See IAD to HAM flights

Destination alternative #3: Aalborg Airport (AAL) in Aalborg

  • 97 miles (156 km) away from BLL
  • Usually 0.83% less expensive than BLL
  • 1-layover flights available

See IAD to AAL flights


Flight Hacking IAD to BLL

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAD to BLL — but Champion Traveler does!

Hack #1: London (IAD > LHR > BLL)

  • Price for both tickets: $633
  • Average savings: $151 (19.22%)

See IAD to LHR flights

Hack #2: Boston, MA (IAD > BOS > BLL)

  • Price for both tickets: $721
  • Average savings: $63 (7.98%)

See IAD to BOS flights


Flight Questions Answered

Still have questions about flying from IAD to BLL? We’ve got answers.

Which airlines fly this route?

You can find 23 major airlines flying this route most often: Air Canada, Air France, Alaska, Alitalia, American, atlasglobal, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, LOT, Lufthansa, SAS, Singapore Airlines, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Billund Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 3934 miles or 6331 kilometers.

How long does it take to fly from IAD to BLL?

The real-world flight time for a nonstop IAD to BLL flight is about 8 hour 4 minutes.

How many flights go between Washington, DC and Billund?

It depends on the day of the week and the date, but a typical day might have around 16 available flights from IAD to BLL.


Airport Location Info


Departing Airport

Origination codeIAD
Origination airport nameWashington Dulles International Airport
CityWashington, DC
Countrythe United States

Return Airport

Destination codeBLL
Destination airport nameBillund Airport


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.