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Cheap flights from Denver to Idaho Falls from $140

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 11/13. 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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United Airlines Logo
9:05 pm - 10:52 pmDEN-IDA
1h 47mnonstop
United Airlines Logo
9:35 pm - 11:25 pmIDA-DEN
1h 50mnonstop
$189United Airlines
Find Deal
Fri, Nov 28 - Sat, Nov 29
Multiple Airlines Logo
1:02 pm - 5:01 pmDEN-IDA
27h 59m1 stop
Multiple Airlines Logo
10:52 pm - 9:04 amIDA-DEN
10h 12m1 stop
$226Multiple Airlines
Find Deal
Sat, Dec 13 - Mon, Dec 29
United Airlines Logo
8:00 am - 9:58 amDEN-IDA
1h 58mnonstop
United Airlines Logo
2:40 pm - 4:31 pmIDA-DEN
1h 51mnonstop
$234United Airlines
Find Deal
Thu, Dec 18 - Thu, Jan 8
Multiple Airlines Logo
1:10 pm - 4:32 pmDEN-IDA
27h 22m1 stop
Multiple Airlines Logo
6:57 pm - 3:58 amIDA-DEN
9h 01m1 stop
$243Multiple Airlines
Find Deal
Sun, Nov 23 - Fri, Nov 28
Delta Logo
7:05 am - 12:34 pmDEN-IDA
5h 29m1 stop
Delta Logo
6:00 am - 9:23 amIDA-DEN
3h 23m1 stop
$244Delta
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Wed, Nov 19 - Sun, Nov 23
United Airlines Logo
8:00 am - 9:56 amDEN-IDA
1h 56mnonstop
United Airlines Logo
2:40 pm - 4:31 pmIDA-DEN
1h 51mnonstop
$249United Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1
United Airlines Logo
8:01 am - 9:48 amDEN-IDA
1h 47mnonstop
United Airlines Logo
7:00 am - 8:57 amIDA-DEN
1h 57mnonstop
$250United Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
Alaska Airlines Logo
12:40 pm - 11:59 pmDEN-IDA
11h 19m1 stop
Alaska Airlines Logo
5:07 pm - 6:03 pmIDA-DEN
24h 56m1 stop
$285Alaska Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
Delta Logo
3:54 pm - 10:21 pmDEN-IDA
6h 27m1 stop
Delta Logo
6:57 pm - 10:56 pmIDA-DEN
3h 59m1 stop
$299Delta
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Thu, Dec 18 - Sat, Jan 3
Alaska Airlines Logo
11:41 am - 11:59 pmDEN-IDA
12h 18m2 stops
Alaska Airlines Logo
5:07 pm - 6:03 pmIDA-DEN
24h 56m1 stop
$300Alaska Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14

United Airlines flights from Denver to Idaho Falls

Our best United Airlines deals on Denver to Idaho Falls flight tickets
United Airlines
Nov 28
DEN9:05 pmDenver Intl
1h 47m
IDA10:52 pmIdaho Falls Fanning Field
Nov 29
IDA9:35 pmIdaho Falls Fanning Field
1h 50m
DEN11:25 pmDenver Intl
$189
Find similar
United Airlines
Dec 18
DEN8:00 amDenver Intl
1h 58m
IDA9:58 amIdaho Falls Fanning Field
Jan 8
IDA2:40 pmIdaho Falls Fanning Field
1h 51m
DEN4:31 pmDenver Intl
$234
Find similar
United Airlines
Jan 29
DEN8:00 amDenver Intl
1h 56m
IDA9:56 amIdaho Falls Fanning Field
Feb 1
IDA2:40 pmIdaho Falls Fanning Field
1h 51m
DEN4:31 pmDenver Intl
$249
Find similar

Alaska Airlines flights from Denver to Idaho Falls

Our best Alaska Airlines deals on Denver to Idaho Falls flight tickets
Alaska Airlines
Dec 10
DEN12:40 pmDenver Intl
11h 19m
1 stop
IDA11:59 pmIdaho Falls Fanning Field
Dec 14
IDA5:07 pmIdaho Falls Fanning Field
24h 56m
1 stop
DEN6:03 pmDenver Intl
$285
Find similar
Alaska Airlines
Dec 10
DEN11:41 amDenver Intl
12h 18m
2 stops
IDA11:59 pmIdaho Falls Fanning Field
Dec 14
IDA5:07 pmIdaho Falls Fanning Field
24h 56m
1 stop
DEN6:03 pmDenver Intl
$300
Find similar
Alaska Airlines
Dec 10
DEN12:40 pmDenver Intl
27h 47m
1 stop
IDA4:27 pmIdaho Falls Fanning Field
Dec 14
IDA5:07 pmIdaho Falls Fanning Field
24h 56m
1 stop
DEN6:03 pmDenver Intl
$335
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 October 30, 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

Fri 11/28

9:05 pm-10:52 pm

Nonstop1h 47m

Idaho Falls Fanning Field

Sat 11/29

9:35 pm-11:25 pm

Nonstop1h 50m

$189

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Sat 12/13

1:02 pm-5:01 pm

1 stop27h 59m

Idaho Falls Fanning Field

Mon 12/29

10:52 pm-9:04 am

1 stop10h 12m

$226

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 12/18

8:00 am-9:58 am

Nonstop1h 58m

Idaho Falls Fanning Field

Thu 1/8

2:40 pm-4:31 pm

Nonstop1h 51m

$234

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Sun 11/23

1:10 pm-4:32 pm

1 stop27h 22m

Idaho Falls Fanning Field

Fri 11/28

6:57 pm-3:58 am

1 stop9h 01m

$243

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 11/19

7:05 am-12:34 pm

1 stop5h 29m

Idaho Falls Fanning Field

Sun 11/23

6:00 am-9:23 am

1 stop3h 23m

$244

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 1/29

8:00 am-9:56 am

Nonstop1h 56m

Idaho Falls Fanning Field

Sun 2/1

2:40 pm-4:31 pm

Nonstop1h 51m

$249

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 11/20

8:01 am-9:48 am

Nonstop1h 47m

Idaho Falls Fanning Field

Mon 11/24

7:00 am-8:57 am

Nonstop1h 57m

$250

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 12/10

12:40 pm-11:59 pm

1 stop11h 19m

Idaho Falls Fanning Field

Sun 12/14

5:07 pm-6:03 pm

1 stop24h 56m

$285

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 12/18

3:54 pm-10:21 pm

1 stop6h 27m

Idaho Falls Fanning Field

Sat 1/3

6:57 pm-10:56 pm

1 stop3h 59m

$299

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 12/10

11:41 am-11:59 pm

2 stops12h 18m

Idaho Falls Fanning Field

Sun 12/14

5:07 pm-6:03 pm

1 stop24h 56m

$300

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 $116.

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 $194. 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 $226. Try not to purchase tickets in the morning because they tend to be around $319. 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 $296 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 $63 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 October 2025, prices for Denver to Idaho Falls flights are approximately 72% more expensive 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

$158

Fastest flight time

1h 43m

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 $158. The best round-trip flight deal from Denver to Idaho Falls found on momondo in the last 72 hours is $224.
The fastest flight from Denver to Idaho Falls takes 1h 43m
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 43m.

  • 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
694 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to Idaho Falls

    United Airlines flies from Denver to Idaho Falls around 16 times per week, with 8,998 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Denver to Idaho Falls in the last 72 hours was $194 (round-trip), much lower than the average airfare cost of $324 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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