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Cheap flights from Idaho Falls to Denver from $105

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Denver departing on 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Idaho Falls to Denver (IDA-DEN)

Cheap round-trip flights

United Airlines Logo
5:56 pm - 7:40 pmIDA-DEN
1h 44mnonstop
United Airlines Logo
3:35 pm - 5:18 pmDEN-IDA
1h 43mnonstop
$189United Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
5:00 am - 6:57 amIDA-DEN
1h 57mnonstop
United Airlines Logo
8:01 am - 9:48 amDEN-IDA
1h 47mnonstop
$194United Airlines
Find Deal
Thu, Oct 30 - Sun, Nov 2
United Airlines Logo
5:00 am - 6:55 amIDA-DEN
1h 55mnonstop
United Airlines Logo
8:00 am - 9:47 amDEN-IDA
1h 47mnonstop
$199United Airlines
Find Deal
Fri, Sep 12 - Sun, Sep 14
Delta Logo
6:57 pm - 10:29 pmIDA-DEN
3h 32m1 stop
Delta Logo
3:40 pm - 10:20 pmDEN-IDA
6h 40m1 stop
$209Delta
Find Deal
Tue, Nov 18 - Wed, Dec 3
Delta Logo
6:57 pm - 10:29 pmIDA-DEN
3h 32m1 stop
Delta Logo
6:20 pm - 10:19 pmDEN-IDA
3h 59m1 stop
$239Delta
Find Deal
Tue, Nov 18 - Fri, Nov 28
Logo
10:57 pm - 11:10 amIDA-DEN
12h 13m1 stop
Logo
6:36 pm - 2:01 pmDEN-IDA
19h 25m1 stop
$245
Find Deal
Fri, Oct 31 - Sun, Nov 2
United Airlines Logo
2:45 pm - 4:35 pmIDA-DEN
1h 50mnonstop
United Airlines Logo
8:00 am - 9:47 amDEN-IDA
1h 47mnonstop
$249United Airlines
Find Deal
Tue, Nov 18 - Thu, Nov 27
Logo
7:40 pm - 3:59 amIDA-DEN
8h 19m1 stop
Logo
8:45 pm - 4:14 pmDEN-IDA
43h 29m2 stops
$254
Find Deal
Mon, Oct 6 - Wed, Oct 22
United Airlines Logo
4:15 pm - 6:03 pmIDA-DEN
1h 48mnonstop
United Airlines Logo
7:10 pm - 8:54 pmDEN-IDA
1h 44mnonstop
$259United Airlines
Find Deal
Wed, Sep 10 - Sun, Sep 14
American Airlines Logo
6:44 am - 1:57 pmIDA-DEN
7h 13m1 stop
American Airlines Logo
5:44 am - 12:59 pmDEN-IDA
7h 15m1 stop
$349American Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4

United Airlines flights from Idaho Falls to Denver

Our best United Airlines deals on Idaho Falls to Denver flight tickets
United Airlines
Oct 1
IDA5:56 pmIdaho Falls Fanning Field
1h 44m
DEN7:40 pmDenver Intl
Oct 4
DEN3:35 pmDenver Intl
1h 43m
IDA5:18 pmIdaho Falls Fanning Field
$189
Find similar
United Airlines
Oct 30
IDA5:00 amIdaho Falls Fanning Field
1h 57m
DEN6:57 amDenver Intl
Nov 2
DEN8:01 amDenver Intl
1h 47m
IDA9:48 amIdaho Falls Fanning Field
$194
Find similar
United Airlines
Sep 12
IDA5:00 amIdaho Falls Fanning Field
1h 55m
DEN6:55 amDenver Intl
Sep 14
DEN8:00 amDenver Intl
1h 47m
IDA9:47 amIdaho Falls Fanning Field
$199
Find similar

Delta flights from Idaho Falls to Denver

Our best Delta deals on Idaho Falls to Denver flight tickets
Delta
Nov 18
IDA6:57 pmIdaho Falls Fanning Field
3h 32m
1 stop
DEN10:29 pmDenver Intl
Dec 3
DEN3:40 pmDenver Intl
6h 40m
1 stop
IDA10:20 pmIdaho Falls Fanning Field
$209
Find similar
Delta
Nov 18
IDA6:57 pmIdaho Falls Fanning Field
3h 32m
1 stop
DEN10:29 pmDenver Intl
Nov 28
DEN6:20 pmDenver Intl
3h 59m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
$239
Find similar
Delta
Oct 3
IDA6:51 pmIdaho Falls Fanning Field
3h 53m
1 stop
DEN10:44 pmDenver Intl
Oct 8
DEN3:41 pmDenver Intl
26h 32m
1 stop
IDA6:13 pmIdaho Falls Fanning Field
$267
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 28, 2025.
Use the filters below to find and compare flights from Idaho Falls to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 10/1

5:56 pm-7:40 pm

Nonstop1h 44m

Denver Intl

Sat 10/4

3:35 pm-5:18 pm

Nonstop1h 43m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 10/30

5:00 am-6:57 am

Nonstop1h 57m

Denver Intl

Sun 11/2

8:01 am-9:48 am

Nonstop1h 47m

$194

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 9/12

5:00 am-6:55 am

Nonstop1h 55m

Denver Intl

Sun 9/14

8:00 am-9:47 am

Nonstop1h 47m

$199

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 11/18

6:57 pm-10:29 pm

1 stop3h 32m

Denver Intl

Wed 12/3

3:40 pm-10:20 pm

1 stop6h 40m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 11/18

6:57 pm-10:29 pm

1 stop3h 32m

Denver Intl

Fri 11/28

6:20 pm-10:19 pm

1 stop3h 59m

$239

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 10/31

10:57 pm-11:10 am

1 stop12h 13m

Denver Intl

Sun 11/2

6:36 pm-2:01 pm

1 stop19h 25m

$245

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 11/18

2:45 pm-4:35 pm

Nonstop1h 50m

Denver Intl

Thu 11/27

8:00 am-9:47 am

Nonstop1h 47m

$249

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Mon 10/6

7:40 pm-3:59 am

1 stop8h 19m

Denver Intl

Wed 10/22

8:45 pm-4:14 pm

2 stops43h 29m

$254

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 9/10

4:15 pm-6:03 pm

Nonstop1h 48m

Denver Intl

Sun 9/14

7:10 pm-8:54 pm

Nonstop1h 44m

$259

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 10/1

6:44 am-1:57 pm

1 stop7h 13m

Denver Intl

Sat 10/4

5:44 am-12:59 pm

1 stop7h 15m

$349

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Idaho Falls to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Idaho Falls and Denver?

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Idaho Falls is in July. Flight prices, which tend to average around $213, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in July, then you should wait until May to fly from Idaho Falls, when ticket prices are also cheap, with an average price of $243.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $565. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $695.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the afternoon when flights can be purchased for as low as $463. Flights in the morning are often more expensive with an average ticket price of $671.

What is the cheapest Idaho Falls Fanning Field to Denver Intl flight route?

Fly from Idaho Falls Fanning Field to Denver Intl for the best Idaho Falls Fanning Field - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Idaho Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $316 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Idaho Falls for as low as $226 on momondo.

What cabin class options are available on Idaho Falls Fanning Field to Denver Intl flights?

There are 4 cabin classes available to choose from on Idaho Falls Fanning Field to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Idaho Falls to Denver flight prices changed over time?

As of August 2025, prices for Idaho Falls to Denver flights are approximately 66% cheaper when compared to flights at the same time last year.

When to book flights from Idaho Falls to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Idaho Falls to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Idaho Falls to Denver (IDA to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to Denver

Best Price Found

$245

Fastest flight time

1h 44m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Denver

1 airport
The best one-way flight to Denver from Idaho Falls in the past 72 hours is $245. The best round-trip flight deal from Idaho Falls to Denver found on momondo in the last 72 hours is $378.
The fastest flight from Idaho Falls to Denver takes 1h 44m
Direct flights go from Idaho Falls to Denver on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Denver: Denver Intl (DEN)
Search flight deals

  • How far is Idaho Falls Fanning Field to Denver Intl by plane?

    A flight from Idaho Falls Fanning Field to Denver Intl will travel around 445.5 mi. By plane, this route typically takes 1h 44m.

  • When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Denver Intl Airport?

    Prices for flights from Idaho Falls Fanning Field Airport to Denver Intl Airport are updated daily.

  • How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Denver Intl Airport?

  • How old do you have to be to fly from Idaho Falls Fanning Field Airport to Denver Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Idaho Falls to Denver?

  • What is the most popular airline from Idaho Falls to Denver?

Best airlines flying from Idaho Falls to Denver

Compare and see reviews for airlines that fly from Idaho Falls to Denver with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $54Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $204Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
DeltaPriceFrom $208Free CancellationRating
7.9
7,977 reviews
Search Delta flights

  • United Airlines Flights From Idaho Falls to Denver

    United Airlines operates around 37 flights from Idaho Falls to Denver every week. The average price of these flights found in the last 72 hours has been $328, but momondo users have found United Airlines deals from Idaho Falls to Denver from as low as $204 round-trip. United Airlines has been scored 7.4/10 in 8,944 reviews.

  • Allegiant Air Flights From Idaho Falls to Denver

    Allegiant Air (7.2/10 from 702 reviews) operates around 2 flights from Idaho Falls to Denver in any given week. The average Allegiant Air airfare for this route is around $88, with deals from around $54 rare but found on momondo. Referenced prices are for round-trip Idaho Falls to Denver flight searches in the last 72 hours.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Longmont
Boulder
Manitou Springs
Lakewood
Greeley
Westminster
Thornton
Winter Park
Grand Lake
Copper Mountain
Frisco
Silverthorne
Centennial

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to Denver?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Denver from Idaho Falls.

Can I find flights from Idaho Falls to Denver with flexible booking policies on momondo?

Flights from Idaho Falls to Denver with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Idaho Falls to Denver?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Denver from Idaho Falls.

I’m not ready to book a flight from Idaho Falls to Denver right now. Can momondo alert me if prices change?

Price alerts on flights to Denver from Idaho Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Denver trip

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