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Cheap flights from Denver to Idaho Falls from $149

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Idaho Falls departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:35 pm - 5:16 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 41mnonstop
United Airlines Logo
4:04 pm - 5:58 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 54mnonstop
$259United Airlines
Fri, Sep 4 - Fri, Sep 11
United Airlines Logo
1:39 pm - 3:23 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 44mnonstop
United Airlines Logo
4:04 pm - 5:58 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 54mnonstop
$259United Airlines
Fri, Sep 18 - Tue, Sep 22
United Airlines Logo
8:05 am - 9:51 amDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 46mnonstop
United Airlines Logo
4:04 pm - 5:58 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 54mnonstop
$259United Airlines
Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
11:50 am - 1:29 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 39mnonstop
United Airlines Logo
4:04 pm - 5:58 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 54mnonstop
$259United Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
1:40 pm - 3:24 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 44mnonstop
United Airlines Logo
5:40 pm - 7:30 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 50mnonstop
$259United Airlines
Fri, Oct 23 - Sun, Oct 25
United Airlines Logo
8:05 am - 9:53 amDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 48mnonstop
United Airlines Logo
5:51 pm - 7:43 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 52mnonstop
$259United Airlines
Thu, Oct 1 - Sat, Oct 10
United Airlines Logo
1:40 pm - 3:24 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 44mnonstop
United Airlines Logo
5:40 pm - 7:30 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 50mnonstop
$259United Airlines
Thu, Oct 22 - Sun, Oct 25
United Airlines Logo
11:50 am - 1:29 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
1h 39mnonstop
United Airlines Logo
4:04 pm - 5:58 pmIDA  Idaho Falls Fanning Field-DEN Denver Intl
1h 54mnonstop
$259United Airlines
Sat, Aug 29 - Fri, Sep 11
Multiple Airlines Logo
10:47 pm - 9:12 amDEN  Denver Intl-IDA Idaho Falls Fanning Field
10h 25m1 stop Phoenix Sky Harbor Intl
Multiple Airlines Logo
9:33 pm - 3:52 amIDA  Idaho Falls Fanning Field-DEN Denver Intl
6h 19m1 stop Las Vegas Harry Reid Intl
$265Multiple Airlines
Wed, Oct 7 - Mon, Oct 12
Multiple Airlines Logo
6:30 am - 4:00 pmDEN  Denver Intl-IDA Idaho Falls Fanning Field
33h 30m2 stops Salt Lake City Las Vegas Harry Reid Intl
Multiple Airlines Logo
9:33 pm - 3:52 amIDA  Idaho Falls Fanning Field-DEN Denver Intl
6h 19m1 stop Las Vegas Harry Reid Intl
$274Multiple Airlines
Thu, Oct 8 - Mon, Oct 12

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Delta flights from Denver to Idaho Falls

Our best Delta deals on Denver to Idaho Falls flight tickets
Delta
Aug 27
DEN6:28 pmDenver Intl
4h 04m
1 stop
IDA10:32 pmIdaho Falls Fanning Field
Aug 30
IDA6:00 amIdaho Falls Fanning Field
3h 14m
1 stop
DEN9:14 amDenver Intl
$279
Delta
Aug 29
DEN3:56 pmDenver Intl
6h 36m
1 stop
IDA10:32 pmIdaho Falls Fanning Field
Aug 30
IDA7:00 pmIdaho Falls Fanning Field
3h 55m
1 stop
DEN10:55 pmDenver Intl
$324
Delta
Oct 1
DEN8:05 amDenver Intl
4h 10m
1 stop
IDA12:15 pmIdaho Falls Fanning Field
Oct 10
IDA6:00 amIdaho Falls Fanning Field
5h 56m
1 stop
DEN11:56 amDenver Intl
$398

United Airlines flights from Denver to Idaho Falls

Our best United Airlines deals on Denver to Idaho Falls flight tickets
United Airlines
Aug 29
DEN11:50 amDenver Intl
1h 39m
IDA1:29 pmIdaho Falls Fanning Field
Sep 11
IDA4:04 pmIdaho Falls Fanning Field
1h 54m
DEN5:58 pmDenver Intl
$259
United Airlines
Sep 4
DEN1:39 pmDenver Intl
1h 44m
IDA3:23 pmIdaho Falls Fanning Field
Sep 11
IDA5:53 pmIdaho Falls Fanning Field
1h 52m
DEN7:45 pmDenver Intl
$268
United Airlines
Aug 28
DEN11:50 amDenver Intl
1h 39m
IDA1:29 pmIdaho Falls Fanning Field
Sep 4
IDA4:04 pmIdaho Falls Fanning Field
1h 54m
DEN5:58 pmDenver Intl
$274

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Idaho Falls 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 9, 2026.
Use the filters below to find and compare flights from Denver to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Fri 9/4

3:35 pm-5:16 pm

Nonstop1h 41m

Idaho Falls Fanning Field

Fri 9/11

4:04 pm-5:58 pm

Nonstop1h 54m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Fri 9/18

1:39 pm-3:23 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 9/22

4:04 pm-5:58 pm

Nonstop1h 54m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Tue 9/1

8:05 am-9:51 am

Nonstop1h 46m

Idaho Falls Fanning Field

Tue 9/8

4:04 pm-5:58 pm

Nonstop1h 54m

$259
Quickest round-trip

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Sat 9/5

11:50 am-1:29 pm

Nonstop1h 39m

Idaho Falls Fanning Field

Sat 9/12

4:04 pm-5:58 pm

Nonstop1h 54m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Fri 10/23

1:40 pm-3:24 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Sun 10/25

5:40 pm-7:30 pm

Nonstop1h 50m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Thu 10/1

8:05 am-9:53 am

Nonstop1h 48m

Idaho Falls Fanning Field

Sat 10/10

5:51 pm-7:43 pm

Nonstop1h 52m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Thu 10/22

1:40 pm-3:24 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Sun 10/25

5:40 pm-7:30 pm

Nonstop1h 50m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Sat 8/29

11:50 am-1:29 pm

Nonstop1h 39m

Idaho Falls Fanning Field

Fri 9/11

4:04 pm-5:58 pm

Nonstop1h 54m

$259

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Wed 10/7

10:47 pm-9:12 am

1 stop10h 25m

Idaho Falls Fanning Field

Mon 10/12

9:33 pm-3:52 am

1 stop6h 19m

$265

DenverIdaho Falls

DEN Denver Intl - IDA Idaho Falls Fanning Field

DENIDA

Denver Intl

Thu 10/8

6:30 am-4:00 pm

2 stops33h 30m

Idaho Falls Fanning Field

Mon 10/12

9:33 pm-3:52 am

1 stop6h 19m

$274

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 Idaho Falls from

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

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 Denver and Idaho Falls?

Prices are currently typical for flights on this route.

Typical prices usually range from $249 to $339.
The lowest price recently found on this route was $259.

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $249.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Thursday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $279. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Monday is $410.

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

Our most recent data shows that the best time of day to fly to Idaho Falls is in the evening. Flights from Denver to Idaho Falls during this time can be as low as $279. Try not to purchase tickets at noon because they tend to be around $394. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

There are 2 cabin classes available to choose from on Denver to Idaho Falls flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Denver to Idaho Falls flights?

No. A direct flight is the cheapest option for a flight between Denver to Idaho Falls.

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

As of August 2026, prices for Denver to Idaho Falls flights are approximately 72% cheaper when compared to flights at the same time last year.

When to book flights from Denver to Idaho Falls

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

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

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

Best Price Found

$268

Fastest flight time

1h 39m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Denver in the past 72 hours is $268. The best round-trip flight deal from Denver to Idaho Falls found on momondo in the last 72 hours is $281.
The fastest flight from Denver to Idaho Falls takes 1h 39m
Direct flights go from Denver to Idaho Falls on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Idaho Falls. From Denver there are direct flights to Idaho Falls Fanning Field (IDA).
Search flight deals

Frequently asked questions about flying from Denver to Idaho Falls

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

    There are 445.5 mi between Denver Intl and Idaho Falls Fanning Field. By plane, this route typically takes 1h 39m.

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

    Prices for flights from Denver Intl Airport to Idaho Falls Fanning Field Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The required travel and health documents for your Idaho Falls Fanning Field 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 Idaho Falls Fanning Field 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 Denver to Idaho Falls?

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

Best airlines flying from Denver to Idaho Falls

Compare and see reviews for airlines that fly from Denver to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $189Free CancellationRating
7.4
10,089 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to Idaho Falls

    United Airlines flies from Denver to Idaho Falls around 19 times per week, with 10,089 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Denver to Idaho Falls in the last 72 hours was $189 (round-trip), much lower than the average airfare cost of $330 for United Airlines flights on this route.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Denver to Idaho Falls. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Denver to Idaho Falls flights to just show those with flexible booking policies.

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

Once all potential Denver to Idaho Falls flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Denver to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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