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$106+ Cheap flights from Idaho Falls to Denver (IDA - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Idaho Falls Fanning Field to Denver Intl are usually found in July or October, booked 89 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Idaho Falls to Denver

Cheapest flights from Idaho Falls to Denver
Explore the most affordable flight options available from Idaho Falls to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:30 pmIDA - DEN
Nonstop1h 51mUnited Airlines
Fri 1/28:00 amDEN - IDA
Nonstop1h 58mUnited Airlines
Deal found 12/10$204
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:05 pmIDA - DEN
Nonstop1h 54mUnited Airlines
Sat 12/277:20 pmDEN - IDA
Nonstop1h 54mUnited Airlines
Deal found 12/10$219
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:40 amIDA - DEN
Nonstop2h 02mUnited Airlines
Fri 12/268:00 amDEN - IDA
Nonstop1h 58mUnited Airlines
Deal found 12/10$249
This Delta deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:10 pmIDA - DEN
1 stop6h 03mDelta
Fri 12/266:27 pmDEN - IDA
1 stop4h 25mDelta
Deal found 12/10$269
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:00 amIDA - DEN
Nonstop2h 03mUnited Airlines
Tue 12/309:05 pmDEN - IDA
Nonstop1h 54mUnited Airlines
Deal found 12/11$279
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/154:19 pmIDA - DEN
Nonstop1h 48mUnited Airlines
Fri 1/28:00 amDEN - IDA
Nonstop1h 58mUnited Airlines
Deal found 12/10$319
This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:00 amIDA - DEN
1 stop8h 07mAmerican Airlines
Fri 12/262:13 pmDEN - IDA
1 stop8h 08mAmerican Airlines
Deal found 12/10$329
This Delta deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:06 pmIDA - DEN
1 stop3h 38mDelta
Fri 12/196:20 pmDEN - IDA
1 stop4h 01mDelta
Deal found 12/11$354
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/114:19 pmIDA - DEN
Nonstop1h 48mUnited Airlines
Sat 12/2011:45 amDEN - IDA
Nonstop1h 45mUnited Airlines
Deal found 12/11$364
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:26 pmIDA - DEN
1 stop18h 29mMultiple Airlines
Sun 1/1110:29 pmDEN - IDA
1 stop15h 50mMultiple Airlines
Deal found 12/10$380
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/124:19 pmIDA - DEN
Nonstop1h 48mUnited Airlines
Sun 12/148:00 amDEN - IDA
Nonstop1h 47mUnited Airlines
Deal found 12/10$389

Find flight deals from Idaho Falls to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$189
(United Airlines)

One-way from

$106
(Kiwi.com)

Popular in

March

Cheapest in

July

Average price

$272

Good round-trip deal

$367 or less

Good one-way deal

$239 or less
Provider with most accurate pricing for Idaho Falls Fanning Field-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Denver Intl flights.
Search Deals
From Idaho Falls Fanning Field to Denver Intl
Search Deals
One-way flight from Idaho Falls Fanning Field to Denver Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Denver Intl.
Search Deals
Price to beat on a one-way flight from Idaho Falls Fanning Field to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Idaho Falls to Denver that are best for you.

Fly from

Idaho Falls

Fly to

Denver

Route

Depart

Return

Price

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 4/25

2:35 pm-4:22 pm

Nonstop1h 47m

Denver Intl

Tue 4/28

11:45 am-1:24 pm

Nonstop1h 39m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 1/15

2:40 pm-4:31 pm

Nonstop1h 51m

Denver Intl

Mon 1/19

11:45 am-1:30 pm

Nonstop1h 45m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 1/15

4:19 pm-6:13 pm

Nonstop1h 54m

Denver Intl

Sun 1/18

11:45 am-1:30 pm

Nonstop1h 45m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 12/24

2:30 pm-4:21 pm

Nonstop1h 51m

Denver Intl

Fri 1/2

8:00 am-9:58 am

Nonstop1h 58m

$204

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 4/25

6:10 am-9:37 am

1 stop3h 27m

Denver Intl

Tue 4/28

6:25 pm-10:14 pm

1 stop3h 49m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 1/22

6:35 pm-10:36 pm

1 stop4h 01m

Denver Intl

Sat 1/24

7:00 am-12:34 pm

1 stop5h 34m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 1/9

1:15 pm-7:56 pm

1 stop6h 41m

Denver Intl

Tue 1/13

6:23 pm-10:19 pm

1 stop3h 56m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 12/26

10:45 am-12:41 pm

Nonstop1h 56m

Denver Intl

Sun 12/28

8:00 am-9:58 am

Nonstop1h 58m

$235

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 1/7

4:19 pm-6:13 pm

Nonstop1h 54m

Denver Intl

Sat 1/10

1:39 pm-3:31 pm

Nonstop1h 52m

$249

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 1/9

4:19 pm-6:13 pm

Nonstop1h 54m

Denver Intl

Thu 1/15

11:45 am-1:30 pm

Nonstop1h 45m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 24 results
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Compare providers for flights from Idaho Falls to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Idaho Falls-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Idaho Falls-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Idaho Falls-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Idaho Falls-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Idaho Falls to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Idaho Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to Denver

How far ahead should I book a flight from Idaho Falls to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Idaho Falls to Denver. Price data was last updated on December 5, 2025.

The price you pay for your flight from Idaho Falls to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Idaho Falls to Denver?

Currently, July is the cheapest month in which you can book a flight from Idaho Falls to Denver (average of $73). Flying from Idaho Falls to Denver in April is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IDA to DEN?

Find hourly flight availability from Idaho Falls to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

When flying from Idaho Falls to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the morning.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated December 12, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Allegiant Air from Idaho Falls to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,005 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,005 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Allegiant Air
7.2
Good
699 reviews
Delta
7.9
Good
8,005 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Idaho Falls to Denver?

    If you book a flight from Idaho Falls to Denver, you will be flying from Fanning Field to Denver Intl. Flights to Denver Intl (DEN) from Idaho Falls Fanning Field (IDA) take 1h 46m for a nonstop flight. There are 5 flights from Fanning Field to Denver per day from 3 airlines.

  • How popular is this Idaho Falls to Denver flight route?

    This flight path from Idaho Falls Fanning Field to Denver Intl was viewed by 38 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Idaho Falls to Denver?

    There are many flights that can get you from Idaho Falls to Denver in 1h 47m. Fly via United Airlines or Delta to get the fastest option. There are 457 mi between Idaho Falls and Denver. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Idaho Falls to Denver round-trip?

    Our cheapest airline available from Idaho Falls to Denver is Allegiant Air. Our recent data shows that you can find tickets from as low as $43 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $189 and $208 round-trip. Allegiant Air is currently priced 84% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Idaho Falls to Denver?

    Before booking your flight to Denver from Idaho Falls, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (84%), United Airlines (84%), Copa Airlines( 79%).

  • What are the cheapest flights from Idaho Falls to Denver?

    Looking for the cheapest flight from Idaho Falls to Denver? While on average our users pay $867, our data indicates the cheapest price to be $193. The most popular route (Idaho Falls Fanning Field - Denver Intl), is priced around $189.

  • Can I find deals for flights from Idaho Falls to Denver that include hotel bookings?

    Yes. In addition to deals on Idaho Falls to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho Falls to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Denver.

  • Can I find deals for business class flights from Idaho Falls to Denver?

    Yes. Cheapflights offers flight deals from Idaho Falls to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho Falls to Denver?

    Currently, July is the cheapest month in which you can book a flight from Idaho Falls to Denver (average of $73). Flying from Idaho Falls to Denver in April is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Idaho Falls to Denver

Discover the top 3 airlines that operate flights from Idaho Falls to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$54Average$88FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$189Average$309FlexibilityNo cancel feeOn-time69%
DeltaCheapest$208Average$273FlexibilityNo cancel feeOn-timeN/A

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