Cheap Flights from Denver International to Idaho Falls

Compare Denver International to Idaho Falls flight deals

Find the cheapest month or even day of the year to fly to Idaho Falls

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Flight deals from Denver International to Idaho Falls

Looking for a cheap last-minute deal or the best return flight from Denver International to Idaho Falls? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver International to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to Idaho Falls flights are currently cheapest in July.

Direct flights from Denver International to Idaho Falls

Denver International to Idaho Falls: Alternative routes

Compare routes from Denver International to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Denver to Idaho Falls: Flight information

The things to know before you go.
Cheapest flight foundR 842
Cheapest month to flyAugust
Average flight time1 hr, 46 mins
Most popular airlineUnited
Average flights per week62

Finding cheap flights from Denver International to Idaho Falls: Frequently asked questions

The best price we found for a return flight from Denver International to Idaho Falls is R 1,681. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 46 minutes is the average flight time from Denver International to Idaho Falls.
United, SkyWest Airlines and Copa fly direct from Denver International to Idaho Falls.
As of July 2025, there are 62 flights per week flying from Denver International to Idaho Falls.
The cheapest month to fly from Denver International to Idaho Falls is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to Idaho Falls Airport on Thursday, 14 August 2025.
Yes – the average flight time is 1 hour and 46 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Allegiant Air offers the cheapest flight tickets to Idaho Falls.

Flying from Denver International Airport (DEN) to Idaho Falls Regional Airport (IDA): what you need to know

  • Hop on a direct flight from Denver International Airport to Idaho Falls Regional Airport and you'll be in the air for an average of 1 hour 45 minutes.

  • Choose from 40 weekly Denver International Airport to Idaho Falls Regional Airport flights. The 07:45 departure with United Airlines is the earliest you can take. United Airlines operates the latest service of the day at 19:30.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Be at the airport on time to board your DEN to IDA flight.

  • You can expect bigger queues during popular months like July. Arriving up to four hours ahead of international flights and two hours for domestic departures is a good idea.

  • United Airlines is your gateway to exploring Idaho Falls (and maybe even some other exciting corners of United States!). Check out the direct flights from Denver International Airport to Idaho Falls Regional Airport offered by this carrier.

  • Most passengers choose to fly with United Airlines on this route.

  • With a dependable 83.26% of services arriving on schedule, United Airlines is the most punctual carrier offering DEN to IDA flights.

  • We make it simple to book a flight with a stopover. To see all your options for tickets from Denver International Airport to Idaho Falls Regional Airport, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to visit your chosen city. Top stopovers between DEN and IDA include:

    • Salt Lake City International Airport

    • Harry Reid Airport (formerly McCarran Airport)

    • Phoenix Sky Harbour International Airport

How to find the cheapest flights from Denver International Airport (DEN) to Idaho Falls Regional Airport (IDA)

  • The lowest price we've seen for a one-way Denver International Airport to Idaho Falls Regional Airport flight is R 842. A round-trip fare right now is R 1,681. Depending on the availability and when you book, these fares could change.

  • To secure cheap tickets from DEN to IDA, book your journey 11 months before your departure.

  • October is the cheapest month for flights from Denver International Airport to Idaho Falls Regional Airport. If you want to fly at a different time of year, the 'Whole month' tool will give you the lowest airfares for each month.

  • Finding cheap flights from DEN to IDA is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you as soon as a new discounted fare appears.

  • Choose your preferred arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Denver International Airport to Idaho Falls Regional Airport.

Handy information about Denver International Airport (DEN)

  • You'll find DEN at 8500 Pena Boulevard.

  • Denver International Airport gets high marks for on-time performance. 80.23% of flights that depart DEN arrive at their destination without delay.

  • To reach Denver International Airport from central Denver, it'll take around 35 minutes if you're travelling by car. Of course, this depends on traffic conditions. It's approximately 40 kilometres from the airport to the city centre.

  • The trip on public transport will take about 1 hour 30 minutes.

  • Get your flight from Denver International Airport to Idaho Falls Regional Airport off to a relaxed start. Just a short drive from DEN, stay at Baymont by Wyndham Denver International Airport and be well-rested for the trip ahead.

Arriving at Idaho Falls Regional Airport (IDA)

  • The last thing you want is a lengthy trip to your hotel if you're landing late on a Denver International Airport to Idaho Falls Regional Airport flight. Check in to one of these accommodation options near IDA instead:

  • Say yes to new adventures by picking up an Idaho Falls Regional Airport rental car. Grab a set of wheels from Budget, Avis or Alamo and experience the lesser-explored corners of Idaho Falls and beyond.

  • Improve your chances of scoring the lowest price by booking as early as you can. Reserving your vehicle from Idaho Falls Regional Airport at least a couple of weeks in advance is a smart move.

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

  • You'll find IDA at 2140 North Skyline.

  • From Idaho Falls Regional Airport, Idaho Falls is approximately 5 kilometres away. It takes around 10 minutes to reach the centre driving.

  • If you're travelling by public transport, expect a journey of roughly 1 hour.

When to fly to Idaho Falls Regional Airport (IDA)

  • The quietest month for a flight from Denver International Airport to Idaho Falls Regional Airport is February, while July is the busiest. Choose the best time to visit Idaho Falls based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Idaho Falls is July, with the temperature ranging between 11ºC (52ºF) and 35ºC (95ºF). Book your flights from Denver International Airport to Idaho Falls Regional Airport in this month if you enjoy this type of weather.

  • If you want cooler conditions, search for a cheap ticket from DEN to IDA in January. Average temperatures are between -15ºC (5ºF) and 1ºC (34ºF) then.

Explore more of United States

  • Salt Lake City is just one of the many places in United States waiting to be discovered once you've taken in the sights of Idaho Falls. Around 306 kilometres away to the south, popular attractions include Temple Square, Utah State Capitol and Red Butte Garden.

  • If you're interested in discovering another well-known destination in United States, consider Boise, roughly 338 kilometres west of Idaho Falls. Idaho State Capitol Building, Old Idaho Penitentiary and Zoo Boise are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.