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Cheap flights from Denver to Idaho Falls from $46

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 8/10. 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
0 bags

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Find the cheapest flights from Denver to Idaho Falls

Cheap round-trip flights

Allegiant Air Logo
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
Allegiant Air Logo
5:51 pm - 7:39 pmIDA-DEN
1h 48mnonstop
$88Allegiant Air
Find Deal
dom., ago. 10 - jue., ago. 14
Allegiant Air Logo
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
Allegiant Air Logo
5:51 pm - 7:39 pmIDA-DEN
1h 48mnonstop
$96Allegiant Air
Find Deal
dom., ago. 10 - jue., ago. 14
Allegiant Air Logo
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
Allegiant Air Logo
5:51 pm - 7:39 pmIDA-DEN
1h 48mnonstop
$99Allegiant Air
Find Deal
dom., ago. 10 - dom., ago. 17
United Airlines Logo
9:05 pm - 10:52 pmDEN-IDA
1h 47mnonstop
United Airlines Logo
4:15 pm - 6:05 pmIDA-DEN
1h 50mnonstop
$189United Airlines
Find Deal
mié., nov. 5 - dom., nov. 9
Delta Logo
5:45 am - 10:39 amDEN-IDA
4h 54m1 stop
Delta Logo
6:51 pm - 10:44 pmIDA-DEN
3h 53m1 stop
$209Delta
Find Deal
mié., ago. 20 - mié., sep. 24
Delta Logo
5:45 am - 10:39 amDEN-IDA
4h 54m1 stop
Delta Logo
6:52 pm - 10:48 pmIDA-DEN
3h 56m1 stop
$214Delta
Find Deal
vie., ago. 15 - jue., ago. 21
United Airlines Logo
9:05 pm - 10:52 pmDEN-IDA
1h 47mnonstop
United Airlines Logo
4:15 pm - 6:05 pmIDA-DEN
1h 50mnonstop
$249United Airlines
Find Deal
mié., nov. 5 - dom., nov. 9
American Airlines Logo
5:00 am - 12:16 pmDEN-IDA
7h 16m1 stop
American Airlines Logo
1:17 pm - 7:49 pmIDA-DEN
6h 32m1 stop
$300American Airlines
Find Deal
lun., ago. 11 - jue., ago. 21
Alaska Airlines Logo
1:06 pm - 10:39 pmDEN-IDA
9h 33m1 stop
Alaska Airlines Logo
6:00 am - 7:10 pmIDA-DEN
13h 10m2 stops
$360Alaska Airlines
Find Deal
mié., sep. 24 - mié., oct. 8
Alaska Airlines Logo
11:40 am - 10:39 pmDEN-IDA
10h 59m2 stops
Alaska Airlines Logo
6:00 am - 7:10 pmIDA-DEN
13h 10m2 stops
$385Alaska Airlines
Find Deal
mié., sep. 24 - mié., oct. 8

United Airlines flights from Denver to Idaho Falls

Our best United Airlines deals on Denver to Idaho Falls flight tickets
United Airlines
Nov 5
DEN9:05 pmDenver Intl
1h 47m
IDA10:52 pmIdaho Falls Fanning Field
Nov 9
IDA4:15 pmIdaho Falls Fanning Field
1h 50m
DEN6:05 pmDenver Intl
$189
Find similar
United Airlines
Nov 5
DEN9:05 pmDenver Intl
1h 47m
IDA10:52 pmIdaho Falls Fanning Field
Nov 9
IDA4:15 pmIdaho Falls Fanning Field
1h 50m
DEN6:05 pmDenver Intl
$249
Find similar
United Airlines
Aug 16
DEN3:40 pmDenver Intl
1h 42m
IDA5:22 pmIdaho Falls Fanning Field
Aug 23
IDA4:00 pmIdaho Falls Fanning Field
1h 46m
DEN5:46 pmDenver Intl
$254
Find similar

Allegiant Air flights from Denver to Idaho Falls

Our best Allegiant Air deals on Denver to Idaho Falls flight tickets
Allegiant Air
Aug 10
DEN3:20 pmDenver Intl
1h 44m
IDA5:04 pmIdaho Falls Fanning Field
Aug 14
IDA5:51 pmIdaho Falls Fanning Field
1h 48m
DEN7:39 pmDenver Intl
$88
Find similar
Allegiant Air
Aug 10
DEN3:20 pmDenver Intl
1h 44m
IDA5:04 pmIdaho Falls Fanning Field
Aug 14
IDA5:51 pmIdaho Falls Fanning Field
1h 48m
DEN7:39 pmDenver Intl
$96
Find similar
Allegiant Air
Aug 10
DEN3:20 pmDenver Intl
1h 44m
IDA5:04 pmIdaho Falls Fanning Field
Aug 17
IDA5:51 pmIdaho Falls Fanning Field
1h 48m
DEN7:39 pmDenver Intl
$99
Find similar

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 julio 31, 2025.
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

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

dom. 8/10

3:20 pm-5:04 pm

Nonstop1h 44m

Idaho Falls Fanning Field

jue. 8/14

5:51 pm-7:39 pm

Nonstop1h 48m

$88

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

dom. 8/10

3:20 pm-5:04 pm

Nonstop1h 44m

Idaho Falls Fanning Field

jue. 8/14

5:51 pm-7:39 pm

Nonstop1h 48m

$96

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

dom. 8/10

3:20 pm-5:04 pm

Nonstop1h 44m

Idaho Falls Fanning Field

dom. 8/17

5:51 pm-7:39 pm

Nonstop1h 48m

$99

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

mié. 11/5

9:05 pm-10:52 pm

Nonstop1h 47m

Idaho Falls Fanning Field

dom. 11/9

4:15 pm-6:05 pm

Nonstop1h 50m

$189

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

mié. 8/20

5:45 am-10:39 am

1 stop4h 54m

Idaho Falls Fanning Field

mié. 9/24

6:51 pm-10:44 pm

1 stop3h 53m

$209

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

vie. 8/15

5:45 am-10:39 am

1 stop4h 54m

Idaho Falls Fanning Field

jue. 8/21

6:52 pm-10:48 pm

1 stop3h 56m

$214

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

mié. 11/5

9:05 pm-10:52 pm

Nonstop1h 47m

Idaho Falls Fanning Field

dom. 11/9

4:15 pm-6:05 pm

Nonstop1h 50m

$249

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

lun. 8/11

5:00 am-12:16 pm

1 stop7h 16m

Idaho Falls Fanning Field

jue. 8/21

1:17 pm-7:49 pm

1 stop6h 32m

$300

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

mié. 9/24

1:06 pm-10:39 pm

1 stop9h 33m

Idaho Falls Fanning Field

mié. 10/8

6:00 am-7:10 pm

2 stops13h 10m

$360

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

mié. 9/24

11:40 am-10:39 pm

2 stops10h 59m

Idaho Falls Fanning Field

mié. 10/8

6:00 am-7:10 pm

2 stops13h 10m

$385

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 cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of June, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $208.

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 $240. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Sunday is $427.

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 afternoon. Flights from Denver to Idaho Falls during this time can be as low as $299. Try not to purchase tickets in the evening because they tend to be around $389. 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

How far in advance should I book a flight to Idaho Falls?

You are more likely to see cheaper flights to Idaho Falls from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho Falls for around $331 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho Falls from Denver for as low as $131 on momondo.

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

There are 3 cabin classes available to choose from on Denver Intl to Idaho Falls Fanning Field flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of July 2025, prices for Denver to Idaho Falls flights are approximately 80% 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

$46

Fastest flight time

1h 40m

Direct flights

Every day

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Denver in the past 72 hours is $46. The best round-trip flight deal from Denver to Idaho Falls found on momondo in the last 72 hours is $88.
The fastest flight from Denver to Idaho Falls takes 1h 40m
Direct flights go from Denver to Idaho Falls every day.
There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)
Search flight deals

  • 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 40m.

  • 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
Allegiant AirPriceFrom $44Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to Idaho Falls

    United Airlines flies from Denver to Idaho Falls around 38 times per week, with 8,900 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Denver to Idaho Falls in the last 72 hours was $227 (round-trip), much lower than the average airfare cost of $351 for United Airlines flights on this route.

  • Allegiant Air Flights From Denver to Idaho Falls

    Allegiant Air (7.2/10 from 702 reviews) operates around 2 flights from Denver to Idaho Falls in any given week. The average Allegiant Air airfare for this route is around $88, with deals from around $44 rare but found on momondo. Referenced prices are for round-trip Denver to Idaho Falls flight searches in the last 72 hours.

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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