The cheapest times to fly from BLL to ORD are

  • January 8th to March 25th (except the week of February 5th)
  • April 9th to June 17th
  • October 22nd to December 9th (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 BLL to ORD is late May. Prices can be as high as $970 for Friday flights during mid July, or as low as $475 for Tuesday flights around late May.


When to Fly to Chicago

Flying from Billund (BLL) to Chicago, IL (ORD) will usually cost between $524 to $837 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late May with an average ticket price of $519. Due to high demand the most expensive time to fly is mid July, with an average price of $846. Planning your trip to low-cost times can easily save you $327 on economy flights and even more on first-class flights. Generally, any price below $587 can be considered a good price for a round-trip BLL to ORD flight.

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

BLL to ORD Flight Prices

Compared to other flights, the BLL to ORD 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 $0.09, 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. Fridays are the most expensive days to fly to Chicago, and Saturdays are the most expensive days to return to Billund. Selecting flights on the least expensive days could save you up to $96 (14%) 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 $580. Return trip prices are from the ORD 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 ORD 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 26 minutes may not be realistic.


Flight Hacking BLL to ORD

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 ORD — but Champion Traveler does!

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

  • Price for both tickets: $534
  • Average savings: $53 (8.95%)

See BLL to LGA flights

Hack #2: New York, NY (BLL > LGA > ORD)

  • Price for both tickets: $539
  • Average savings: $48 (8.18%)

See BLL to LHR flights

Hack #3: Oslo (BLL > OSL > ORD)

  • Price for both tickets: $539
  • Average savings: $48 (8.18%)

See BLL to OSL flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 22 major airlines flying this route most often: Air Canada, Air France, Alitalia, American, atlasglobal, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue, KLM, LOT, Lufthansa, SAS, Singapore Airlines, SWISS, Tap Air Portugal, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Chicago O’Hare International Airport to Billund Airport?

The distance between the two airports is roughly 4139 miles or 6661 kilometers.

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

The real-world flight time for a nonstop BLL to ORD flight is about 8 hour 26 minutes.

How many flights go between Billund and Chicago, IL?

It depends on the day of the week and the date, but a typical day might have around 52 available flights from BLL to ORD.


Airport Location Info


Departing Airport

Origination codeBLL
Origination airport nameBillund Airport

Return Airport

Destination codeORD
Destination airport nameChicago O’Hare International Airport
CityChicago, IL
Countrythe United States


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.