The cheapest times to fly from DEN to SUN are

  • January 1st to February 4th
  • April 16th to May 13th
  • 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 SUN is late September. Prices can be as high as $750 for Sunday flights during late December, or as low as $296 for Tuesday flights around late September.


When to Fly to Sun Valley

Flying from Denver, CO (DEN) to Sun Valley/Hailey/Ketchum, ID (SUN) will usually cost between $309 to $526 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $318. Due to high demand the most expensive time to fly is late December, with an average price of $498. Planning your trip to low-cost times can easily save you $180 on economy flights and even more on first-class flights. Generally, any price below $375 can be considered a good price for a round-trip DEN to SUN flight.

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

DEN to SUN Flight Prices

Compared to other flights, the DEN to SUN 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 $0.42, 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 $100 (22%) 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 $342. Return trip prices are from the SUN 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 SUN can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 59 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 SUN while comparing.

Destination alternative #1: Boise Air Terminal Airport (BOI) in Boise, ID

  • 97 miles (156 km) away from SUN
  • Usually 35.87% less expensive than SUN
  • Nonstop flights available

See DEN to BOI flights

Destination alternative #2: Pocatello Regional Airport (PIH) in Pocatello, ID

  • 95 miles (153 km) away from SUN
  • Usually 15.20% less expensive than SUN
  • 1-layover flights available

See DEN to PIH flights

Destination alternative #3: Joslin Field – Magic Valley Regional Airport (TWF) in Twin Falls, ID

  • 71 miles (114 km) away from SUN
  • Usually 8.00% less expensive than SUN
  • 1-layover flights available

See DEN to TWF flights

Destination alternative #4: Idaho Falls Regional Airport (IDA) in Idaho Falls, ID

  • 112 miles (180 km) away from SUN
  • Usually 0.93% less expensive than SUN
  • Nonstop flights available

See DEN to IDA flights


Flight Questions Answered

Still have questions about flying from DEN to SUN? 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 Friedman Memorial Airport to Denver International Airport?

The distance between the two airports is roughly 556 miles or 895 kilometers.

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

The real-world flight time for a nonstop DEN to SUN flight is about 1 hour 59 minutes.

How many flights go between Denver, CO and Sun Valley/Hailey/Ketchum, ID?

It depends on the day of the week and the date, but a typical day might have around 80 available flights from DEN to SUN.


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 SUN
Destination airport name Friedman Memorial Airport
City Sun Valley/Hailey/Ketchum, ID
Country the United States
Latitude 43.5
Longitude -114.3


Late and Early Flight Data

Flights from DEN to SUN tend to depart much later than the average flight. According to our recently updated data, 52% of flights departed 5 or more minutes late, and 3% of flights left 5 or more minutes early. On average you can expect to leave SUN heading for DEN about 27 minutes late. This does significantly impact arrival time, as the average landing time in Sun Valley/Hailey/Ketchum, ID is about 29 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • SkyWest: 27 minutes late
  • Some airlines not reporting


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.