The cheapest times to fly from BLL to DEN are

  • January 8th to March 25th
  • April 9th to June 3rd
  • October 29th to December 9th

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 BLL to DEN is late February and early March. Prices can be as high as $1076 for Saturday flights during mid July, or as low as $554 for Tuesday flights around late February and early March.


When to Fly to Denver

Flying from Billund (BLL) to Denver, CO (DEN) will usually cost between $564 to $904 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late February and early March with an average ticket price of $575. Due to high demand the most expensive time to fly is mid July, with an average price of $999. Planning your trip to low-cost times can easily save you $424 on economy flights and even more on first-class flights. Generally, any price below $595 can be considered a good price for a round-trip BLL to DEN flight.

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

BLL to DEN Flight Prices

Compared to other flights, the BLL to DEN flight is cheaper than the average and costs about as much as the average flight leaving from Billund. The average price per mile (for a direct flight) is $0.08, 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 $119 (12%) 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 $616. Return trip prices are from the DEN to BLL 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 BLL to DEN can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 35 minutes may not be realistic.


Flight Hacking BLL to DEN

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 BLL to DEN — but Champion Traveler does!

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

  • Price for both tickets: $568
  • Average savings: $27 (4.54%)

See BLL to flights


Flight Questions Answered

Still have questions about flying from BLL to DEN? 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, Austrian, British Airways, Brussels Airlines, Condor, Delta, Finnair, Iberia, Icelandair, JetBlue, KLM, LOT, Lufthansa, Norwegian, SAS, Singapore Airlines, SWISS, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Denver International Airport to Billund Airport?

The distance between the two airports is roughly 4780 miles or 7693 kilometers.

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

The real-world flight time for a nonstop BLL to DEN flight is about 9 hour 35 minutes.

How many flights go between Billund and Denver, CO?

It depends on the day of the week and the date, but a typical day might have around 15 available flights from BLL to DEN.


Airport Location Info


Departing Airport

Origination code BLL
Origination airport name Billund Airport
City Billund
Country Denmark
Latitude 55.7
Longitude 9.2

Return Airport

Destination code DEN
Destination airport name Denver International Airport
City Denver, CO
Country the United States
Latitude 39.9
Longitude -104.7


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.