Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Idaho Falls from $157

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 12/15. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Denver to Idaho Falls

Cheap round-trip flights

United Airlines Logo
7:07 pm - 8:52 pmDEN-IDA
1h 45mnonstop
United Airlines Logo
5:56 pm - 7:40 pmIDA-DEN
1h 44mnonstop
$189United Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
9:05 pm - 10:49 pmDEN-IDA
1h 44mnonstop
United Airlines Logo
5:00 am - 6:56 amIDA-DEN
1h 56mnonstop
$194United Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
Delta Logo
3:54 pm - 10:19 pmDEN-IDA
6h 25m1 stop
Delta Logo
6:00 am - 9:23 amIDA-DEN
3h 23m1 stop
$209Delta
Find Deal
Wed, Nov 19 - Sun, Nov 23
Delta Logo
3:54 pm - 10:19 pmDEN-IDA
6h 25m1 stop
Delta Logo
6:00 am - 9:23 amIDA-DEN
3h 23m1 stop
$229Delta
Find Deal
Wed, Nov 19 - Sun, Nov 23
Logo
9:38 am - 4:14 pmDEN-IDA
30h 36m2 stops
Logo
7:40 pm - 3:59 amIDA-DEN
8h 19m1 stop
$233
Find Deal
Thu, Oct 2 - Mon, Oct 6
Logo
10:29 pm - 12:49 pmDEN-IDA
14h 20m1 stop
Logo
7:40 pm - 11:10 pmIDA-DEN
27h 30m1 stop
$245
Find Deal
Sun, Oct 12 - Mon, Oct 20
American Airlines Logo
5:45 am - 12:25 pmDEN-IDA
6h 40m1 stop
American Airlines Logo
12:55 pm - 7:26 pmIDA-DEN
6h 31m1 stop
$280American Airlines
Find Deal
Fri, Oct 24 - Sat, Oct 25
American Airlines Logo
3:08 pm - 10:03 pmDEN-IDA
6h 55m1 stop
American Airlines Logo
5:35 am - 11:19 amIDA-DEN
5h 44m1 stop
$351American Airlines
Find Deal
Mon, Feb 9 - Wed, Feb 11
Alaska Airlines Logo
7:00 am - 11:59 pmDEN-IDA
16h 59m1 stop
Alaska Airlines Logo
3:50 pm - 11:34 amIDA-DEN
19h 44m2 stops
$358Alaska Airlines
Find Deal
Sat, Nov 8 - Mon, Nov 10
Alaska Airlines Logo
7:04 pm - 10:38 pmDEN-IDA
27h 34m2 stops
Alaska Airlines Logo
8:00 am - 6:33 pmIDA-DEN
10h 33m2 stops
$367Alaska Airlines
Find Deal
Mon, Feb 9 - Wed, Feb 11

Delta flights from Denver to Idaho Falls

Our best Delta deals on Denver to Idaho Falls flight tickets
Delta
Nov 19
DEN3:54 pmDenver Intl
6h 25m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
Nov 23
IDA6:00 amIdaho Falls Fanning Field
3h 23m
1 stop
DEN9:23 amDenver Intl
$209
Find similar
Delta
Nov 19
DEN3:54 pmDenver Intl
6h 25m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
Nov 23
IDA6:00 amIdaho Falls Fanning Field
3h 23m
1 stop
DEN9:23 amDenver Intl
$229
Find similar
Delta
Nov 19
DEN6:20 pmDenver Intl
3h 59m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
Nov 23
IDA6:00 amIdaho Falls Fanning Field
5h 07m
1 stop
DEN11:07 amDenver Intl
$239
Find similar

United Airlines flights from Denver to Idaho Falls

Our best United Airlines deals on Denver to Idaho Falls flight tickets
United Airlines
Oct 2
DEN7:07 pmDenver Intl
1h 45m
IDA8:52 pmIdaho Falls Fanning Field
Oct 6
IDA5:56 pmIdaho Falls Fanning Field
1h 44m
DEN7:40 pmDenver Intl
$189
Find similar
United Airlines
Sep 25
DEN9:05 pmDenver Intl
1h 44m
IDA10:49 pmIdaho Falls Fanning Field
Sep 30
IDA5:00 amIdaho Falls Fanning Field
1h 56m
DEN6:56 amDenver Intl
$194
Find similar
United Airlines
Sep 25
DEN8:00 amDenver Intl
1h 48m
IDA9:48 amIdaho Falls Fanning Field
Sep 30
IDA2:35 pmIdaho Falls Fanning Field
1h 48m
DEN4:23 pmDenver Intl
$199
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 September 11, 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

Thu 10/2

7:07 pm-8:52 pm

Nonstop1h 45m

Idaho Falls Fanning Field

Mon 10/6

5:56 pm-7:40 pm

Nonstop1h 44m

$189

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 9/25

9:05 pm-10:49 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 9/30

5:00 am-6:56 am

Nonstop1h 56m

$194

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 11/19

3:54 pm-10:19 pm

1 stop6h 25m

Idaho Falls Fanning Field

Sun 11/23

6:00 am-9:23 am

1 stop3h 23m

$209

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 11/19

3:54 pm-10:19 pm

1 stop6h 25m

Idaho Falls Fanning Field

Sun 11/23

6:00 am-9:23 am

1 stop3h 23m

$229

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 10/2

9:38 am-4:14 pm

2 stops30h 36m

Idaho Falls Fanning Field

Mon 10/6

7:40 pm-3:59 am

1 stop8h 19m

$233

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Sun 10/12

10:29 pm-12:49 pm

1 stop14h 20m

Idaho Falls Fanning Field

Mon 10/20

7:40 pm-11:10 pm

1 stop27h 30m

$245

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 10/24

5:45 am-12:25 pm

1 stop6h 40m

Idaho Falls Fanning Field

Sat 10/25

12:55 pm-7:26 pm

1 stop6h 31m

$280

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Mon 2/9

3:08 pm-10:03 pm

1 stop6h 55m

Idaho Falls Fanning Field

Wed 2/11

5:35 am-11:19 am

1 stop5h 44m

$351

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Sat 11/8

7:00 am-11:59 pm

1 stop16h 59m

Idaho Falls Fanning Field

Mon 11/10

3:50 pm-11:34 am

2 stops19h 44m

$358

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Mon 2/9

7:04 pm-10:38 pm

2 stops27h 34m

Idaho Falls Fanning Field

Wed 2/11

8:00 am-6:33 pm

2 stops10h 33m

$367

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $166. 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 $249. Try not to purchase tickets in the evening because they tend to be around $363. 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 $320 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 September 2025, prices for Denver to Idaho Falls flights are approximately 29% 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

$68

Fastest flight time

1h 40m

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 $68. The best round-trip flight deal from Denver to Idaho Falls found on momondo in the last 72 hours is $249.
The fastest flight from Denver to Idaho Falls takes 1h 40m
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 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 $213Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to Idaho Falls

    United Airlines flies from Denver to Idaho Falls around 36 times per week, with 8,937 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Denver to Idaho Falls in the last 72 hours was $213 (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.

An easier way to manage your Idaho Falls trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 10/11
Sat 10/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States