The cheapest times to fly from DEN to HLN are

  • January 1st to March 4th (except the week of February 12th)
  • April 16th to April 29th
  • August 6th to November 18th

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 DEN to HLN is mid to late September. Prices can be as high as $527 for Sunday flights during mid to late November, or as low as $258 for Tuesday flights around mid to late September.


When to Fly to Helena

Flying from Denver, CO (DEN) to Helena, MT (HLN) will usually cost between $278 to $448 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $288. Due to high demand the most expensive time to fly is mid to late November, with an average price of $447. Planning your trip to low-cost times can easily save you $159 on economy flights and even more on first-class flights. Generally, any price below $382 can be considered a good price for a round-trip DEN to HLN flight.

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

DEN to HLN Flight Prices

Compared to other flights, the DEN to HLN flight is much cheaper than the average and costs much less than the average flight leaving from Denver. The average price per mile (for a direct flight) is $0.4, which is a bit above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays 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 $63 (16%) 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 $336. Return trip prices are from the HLN to DEN 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 DEN to HLN can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 2 hour 3 minutes may 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 a nonstop flight from DEN to HLN while comparing.

Destination alternative #1: Bozeman Yellowstone International Airport (BZN) in Bozeman, MT

  • 70 miles (113 km) away from HLN
  • Usually 12.70% less expensive than HLN
  • Nonstop flights available

See DEN to BZN flights

Destination alternative #2: Bert Mooney Airport (BTM) in Butte, MT

  • 51 miles (82 km) away from HLN
  • Usually 8.64% less expensive than HLN
  • 1-layover flights available

See DEN to BTM flights

Destination alternative #3: Missoula International Airport (MSO) in Missoula, MT

  • 102 miles (164 km) away from HLN
  • Usually 8.64% less expensive than HLN
  • Nonstop flights available

See DEN to MSO flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 4 major airlines flying this route most often: Alaska, American, Delta, United, and potentially more during busy seasons.

How far away is it from Helena Regional Airport to Denver International Airport?

The distance between the two airports is roughly 593 miles or 954 kilometers.

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

The real-world flight time for a nonstop DEN to HLN flight is about 2 hour 3 minutes.

How many flights go between Denver, CO and Helena, MT?

It depends on the day of the week and the date, but a typical day might have around 41 available flights from DEN to HLN.


Airport Location Info


Departing Airport

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

Return Airport

Destination code HLN
Destination airport name Helena Regional Airport
City Helena, MT
Country the United States
Latitude 46.6
Longitude -112


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.