$129 Cheap Flights from Idaho Falls (IDA) to Denver (DEN)

View $129 flight on Thu, Jan 22, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $129 for one-way flights and $189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jan 22 - Sun, Jan 25
IDA
Idaho Falls
DEN
Denver
$189 Roundtrip, found 10 hours ago
$189
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jan 22 from Idaho Falls to Denver, returning Sun, Jan 25, priced at $189 found 10 hours ago
United
Mon, Nov 17 - Tue, Nov 25
IDA
Idaho Falls
DEN
Denver
$194 Roundtrip, found 1 day ago
$194
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 17 from Idaho Falls to Denver, returning Tue, Nov 25, priced at $194 found 1 day ago
Delta
Fri, Nov 14 - Wed, Nov 19
IDA
Idaho Falls
DEN
Denver
$199 Roundtrip, found 6 days ago
$199
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Nov 14 from Idaho Falls to Denver, returning Wed, Nov 19, priced at $199 found 6 days ago
Delta
Sat, Feb 21 - Tue, Feb 24
IDA
Idaho Falls
DEN
Denver
$209 Roundtrip, found 2 hours ago
$209
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Feb 21 from Idaho Falls to Denver, returning Tue, Feb 24, priced at $209 found 2 hours ago
American Airlines
Thu, Jan 22 - Sun, Jan 25
IDA
Idaho Falls
DEN
Denver
$211 Roundtrip, found 10 hours ago
$211
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Jan 22 from Idaho Falls to Denver, returning Sun, Jan 25, priced at $211 found 10 hours ago
Delta
Sun, Nov 9 - Tue, Nov 11
IDA
Idaho Falls
DEN
Denver
$218 Roundtrip, found 5 days ago
$218
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 9 from Idaho Falls to Denver, returning Tue, Nov 11, priced at $218 found 5 days ago
United
Fri, Jan 23 - Mon, Jan 26
IDA
Idaho Falls
DEN
Denver
$219 Roundtrip, found 11 hours ago
$219
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Jan 23 from Idaho Falls to Denver, returning Mon, Jan 26, priced at $219 found 11 hours ago
United
Mon, Oct 13 - Mon, Oct 20
IDA
Idaho Falls
DEN
Denver
$224 Roundtrip, found 20 hours ago
$224
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Oct 13 from Idaho Falls to Denver, returning Mon, Oct 20, priced at $224 found 20 hours ago
Hawaiian Airlines
Thu, Jan 22 - Sat, Feb 7
IDA
Idaho Falls
DEN
Denver
$342 Roundtrip, found 3 days ago
$342
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Thu, Jan 22 from Idaho Falls to Denver, returning Sat, Feb 7, priced at $342 found 3 days ago
Alaska Airlines
Tue, Oct 21 - Wed, Oct 22
IDA
Idaho Falls
DEN
Denver
$357 Roundtrip, found 1 day ago
$357
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Oct 21 from Idaho Falls to Denver, returning Wed, Oct 22, priced at $357 found 1 day ago

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

May is typically the cheapest month to fly

From $189 - $539 per traveler.

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $254
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $254
Flights from Idaho Falls (IDA) to Denver (DEN)
Origin airport
Idaho Falls Regional
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$189
Distance
457 mi
Average flight time
1 hour 49 mins

Idaho Falls to Denver Flights

The cheapest times to fly from Idaho Falls to Denver

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 Idaho Falls to Denver are during the month of January. You can find some of the cheapest flights from Idaho Falls to Denver with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Idaho Falls to Denver: 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 Idaho Falls to Denver

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 Idaho Falls to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $129 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 Idaho Falls to Denver 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 Idaho Falls to Denver 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 Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN) cost?
Get a cheap one-way flight from $129 or cheap return flight from $189 from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
Planning your getaway for January is a good way to save, as it's the cheapest month for flights between IDA and DEN. You'll usually find the lowest fares during off-peak months.
Which airlines fly direct from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
You can fly directly from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN) on a United Airlines flight.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
To find the cheapest airline that'll fly you from IDA to DEN, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
With an average of 4 nonstop flights that operate from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN) each day, you'll be jetting off in no time.
What are the most popular departure times for flights from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
More travelers fly between IDA and DEN at 7 AM than at any other time of day. Rather skip the crowds? Try choosing a quieter departure window and you're likely to save on your ticket as well.
What day of the week has the most flights from IDA to DEN?
If you depart on a Friday, you'll get the largest range of options for flights from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN).
What is the earliest flight from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
Hop on the earliest flight at around 7:00AM UTC-7, departing from Idaho Falls Regional Airport (IDA). You'll be in the air for roughly 1h 59m, coming in to land at Denver Intl. Airport (DEN) at approximately 8:59AM UTC-7.
How long does it take to fly from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
It takes about 1 hour and 55 minutes to travel the 460 mi from IDA to DEN.
What airline has the least delays from IDA to DEN?
United Airlines has the best track record for on-time direct flights from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN), with an on-time score of 81%. Use the Expedia App to check your flight status before you head off and get immediate updates about any trip changes.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
To touch down at Denver Intl. Airport (DEN) on time, opt for a flight that leaves Idaho Falls Regional Airport (IDA) 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 Denver from Idaho Falls Regional Airport (IDA)?
If you're taking a direct flight from Idaho Falls Regional Airport (IDA) to Denver, Denver Intl. Airport (DEN) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN) last-minute?
Last-minute fares from IDA to DEN are usually more expensive. To secure the best rates, start looking for flights as early as possible. That said, if your travel plans are flexible, it's possible to score a cheap fare right before you leave.
Is it cheaper to book an IDA to DEN flight and hotel package?
You'll typically save money by booking an IDA to DEN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your ideal accommodations and flights, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Denver Intl. Airport (DEN)?
If you booked your IDA to DEN flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.