$132 Cheap Flights from Denver (DEN) to Idaho Falls (IDA)

View $132 flight on Tue, Feb 3, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)

Cheap Flights from Denver to Idaho Falls (DEN-IDA)

Prices were available within the past 7 days and start at $132 for one-way flights and $189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, May 19 - Sat, May 23
DEN
Denver
IDA
Idaho Falls
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Tue, May 19 from Denver to Idaho Falls, returning Sat, May 23, priced at $189 found 1 hour ago
United
Wed, Jan 14 - Sat, Jan 17
DEN
Denver
IDA
Idaho Falls
$198 Roundtrip, found 16 hours ago
$198
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Jan 14 from Denver to Idaho Falls, returning Sat, Jan 17, priced at $198 found 16 hours ago
United
Sat, Feb 14 - Sat, Feb 21
DEN
Denver
IDA
Idaho Falls
$203 Roundtrip, found 3 hours ago
$203
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Feb 14 from Denver to Idaho Falls, returning Sat, Feb 21, priced at $203 found 3 hours ago
United
Thu, Dec 25 - Mon, Dec 29
DEN
Denver
IDA
Idaho Falls
$204 Roundtrip, found 1 day ago
$204
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 25 from Denver to Idaho Falls, returning Mon, Dec 29, priced at $204 found 1 day ago
Delta
Tue, Feb 17 - Sat, Feb 21
DEN
Denver
IDA
Idaho Falls
$209 Roundtrip, found 3 hours ago
$209
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Feb 17 from Denver to Idaho Falls, returning Sat, Feb 21, priced at $209 found 3 hours ago
American Airlines
Thu, Jan 22 - Tue, Jan 27
DEN
Denver
IDA
Idaho Falls
$211 Roundtrip, found 6 hours ago
$211
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Jan 22 from Denver to Idaho Falls, returning Tue, Jan 27, priced at $211 found 6 hours ago
United
Tue, Dec 23 - Sat, Dec 27
DEN
Denver
IDA
Idaho Falls
$214 Roundtrip, found 2 days ago
$214
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 23 from Denver to Idaho Falls, returning Sat, Dec 27, priced at $214 found 2 days ago
United
Wed, Dec 24 - Mon, Dec 29
DEN
Denver
IDA
Idaho Falls
$217 Roundtrip, found 3 days ago
$217
Roundtrip
found 3 days ago
Select United flight, departing Wed, Dec 24 from Denver to Idaho Falls, returning Mon, Dec 29, priced at $217 found 3 days ago
Hawaiian Airlines
Tue, Feb 3 - Wed, Feb 4
DEN
Denver
IDA
Idaho Falls
$263 Roundtrip, found 4 days ago
$263
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Feb 3 from Denver to Idaho Falls, returning Wed, Feb 4, priced at $263 found 4 days ago
Alaska Airlines
Thu, Jan 8 - Tue, Jan 13
DEN
Denver
IDA
Idaho Falls
$273 Roundtrip, found 3 days ago
$273
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Denver to Idaho Falls, returning Tue, Jan 13, priced at $273 found 3 days ago

Find the cheapest month to fly from Denver (DEN) to Idaho Falls (IDA)

February is typically the cheapest month to fly

From $189 - $559 per traveler.

Alternative airports near Idaho Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Idaho Falls Regional IDA. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $264
IDA
Idaho Falls Regional
CheapestClosest
Average driving time to city center5 min
Flights from $264
Flights from Denver (DEN) to Idaho Falls (IDA)
Origin airport
Denver Intl.
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$189
Distance
457 mi
Average flight time
1 hour 47 mins

Denver to Idaho Falls Flights

The cheapest times to fly from Denver to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Idaho Falls are during the month of May. You can find some of the cheapest flights from Denver to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Idaho Falls

Sunday is one of the best days to book for cheap flights from Denver to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Idaho Falls in 2026. You can also book with separate airlines for your outbound and return journeys, from $132 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA) cost?
Get a cheap one-way flight from $132 or cheap return flight from $189 from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
The cheapest month to fly from DEN to IDA is May, when demand is low. Off-peak months are generally when you'll find lower airfares between these airports.
Which airlines fly direct from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
Take a direct flight with United Airlines and journey straight from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA).
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
To find the cheapest airline flying from DEN to IDA, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
When departing from Denver Intl. Airport (DEN), you can take your pick from an average of 4 daily nonstop flights to Idaho Falls Regional Airport (IDA).
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
Flights between DEN and IDA are their busiest at 8 AM. For a more relaxed trip and possibly cheaper prices, choose a time when demand is lower.
What day of the week has the most flights from DEN to IDA?
Monday has the most flights from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA). Consider traveling on this day and you'll have a greater chance of finding a departure that fits your itinerary.
What is the earliest flight from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
The earliest flight jetting off from Denver Intl. Airport (DEN) is at around 8:00AM UTC-7. Board this plane and you'll touch down at Idaho Falls Regional Airport (IDA) at approximately 9:52AM UTC-7. The total flight duration is 1h 52m.
How long does it take to fly from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
The average flight duration from DEN to IDA is 1 hour and 49 minutes, covering a distance of 460 mi.
What is the best time to fly from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
To touch down at Idaho Falls Regional Airport (IDA) without delays, choose a flight that leaves Denver Intl. Airport (DEN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Idaho Falls from Denver Intl. Airport (DEN)?
Explore your flight options from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA). This is the only Idaho Falls airport you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA) last-minute?
Waiting until just before your trip to book your flight from DEN to IDA generally means paying more. While it's possible to find some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans for a better chance of landing a bargain.
Is it cheaper to book a DEN to IDA flight and hotel package?
Opting for a DEN to IDA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of stays and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Idaho Falls Regional Airport (IDA)?
If you booked your DEN to IDA flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.