The cheapest times to fly from LJU to DEN are

  • January 8th to June 3rd (except the weeks of March 12th, March 26th, and May 14th)
  • November 5th to December 9th (except the week of November 26th)

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 LJU to DEN is early November. Prices can be as high as $1588 for Saturday flights during early August, or as low as $975 for Tuesday flights around early November.


When to Fly to Denver

Flying from Ljubljana (LJU) to Denver, CO (DEN) will usually cost between $986 to $1457 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early November with an average ticket price of $997. Due to high demand the most expensive time to fly is early August, with an average price of $1463. Planning your trip to low-cost times can easily save you $466 on economy flights and even more on first-class flights. Generally, any price below $1024 can be considered a good price for a round-trip LJU to DEN flight.

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

LJU to DEN Flight Prices

Compared to other flights, the LJU to DEN flight is priced close to the average and costs slightly more than the average flight leaving from Ljubljana. 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 fly to DEN, and Monday the cheapest day to fly back into LJU. Saturdays are the most expensive days to fly to Denver, and Fridays are the most expensive days to return to Ljubljana. Selecting flights on the least expensive days could save you up to $167 (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 $1045. Return trip prices are from the DEN to LJU 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 LJU 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 10 hour 42 minutes may not be realistic.


Flight Hacking LJU 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 LJU to DEN — but Champion Traveler does!

Hack #1: Amsterdam (LJU > AMS > DEN)

  • Price for both tickets: $658
  • Average savings: $366 (35.74%)

See LJU to LHR flights

Hack #2: London (LJU > LHR > DEN)

  • Price for both tickets: $712
  • Average savings: $312 (30.47%)

See LJU to AMS flights

Hack #3: Paris (LJU > CDG > DEN)

  • Price for both tickets: $755
  • Average savings: $270 (26.32%)

See LJU to CDG flights


Flight Questions Answered

Still have questions about flying from LJU to DEN? We’ve got answers.

Which airlines fly this route?

You can find 17 major airlines flying this route most often: Adria, Air Canada, Air France, Air India, Austrian, British Airways, Brussels Airlines, Delta, Finnair, KLM, LOT, Lufthansa, SAS, Singapore Airlines, SWISS, Turkish Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5403 miles or 8695 kilometers.

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

The real-world flight time for a nonstop LJU to DEN flight is about 10 hour 42 minutes.

How many flights go between Ljubljana 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 LJU to DEN.


Airport Location Info


Departing Airport

Origination codeLJU
Origination airport nameLjubljana Airport

Return Airport

Destination codeDEN
Destination airport nameDenver International Airport
CityDenver, CO
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.