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Cheap flights from Denver to Idaho Falls from $131

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 1/30. 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

Enter your travel dates to find the best prices.
United Airlines Logo
8:00 am - 9:56 am
DEN
-
IDA
1h 56mnonstop
United Airlines Logo
4:19 pm - 6:13 pm
IDA
-
DEN
1h 54mnonstop
$189United Airlines
Fri, Jan 9 - Sun, Jan 11
United Airlines Logo
11:45 am - 1:30 pm
DEN
-
IDA
1h 45mnonstop
United Airlines Logo
4:19 pm - 6:13 pm
IDA
-
DEN
1h 54mnonstop
$249United Airlines
Fri, Jan 9 - Sun, Jan 25
Delta Logo
3:59 pm - 10:19 pm
DEN
-
IDA
6h 20m1 stop
Delta Logo
5:25 am - 11:51 am
IDA
-
DEN
6h 26m1 stop
$254Delta
Fri, Jan 9 - Sun, Jan 25
United Airlines Logo
11:45 am - 1:30 pm
DEN
-
IDA
1h 45mnonstop
United Airlines Logo
4:19 pm - 6:13 pm
IDA
-
DEN
1h 54mnonstop
$264United Airlines
Wed, Dec 31 - Thu, Jan 8
Delta Logo
7:10 am - 12:27 pm
DEN
-
IDA
5h 17m1 stop
Delta Logo
6:57 pm - 10:56 pm
IDA
-
DEN
3h 59m1 stop
$269Delta
Mon, Dec 29 - Fri, Jan 2
United Airlines Logo
8:00 am - 9:58 am
DEN
-
IDA
1h 58mnonstop
United Airlines Logo
6:40 am - 8:42 am
IDA
-
DEN
2h 02mnonstop
$279United Airlines
Wed, Dec 31 - Sat, Jan 3
Delta Logo
3:59 pm - 10:19 pm
DEN
-
IDA
6h 20m1 stop
Delta Logo
6:35 pm - 10:36 pm
IDA
-
DEN
4h 01m1 stop
$284Delta
Fri, Jan 9 - Sun, Jan 25
United Airlines Logo
9:05 pm - 10:59 pm
DEN
-
IDA
1h 54mnonstop
United Airlines Logo
2:40 pm - 4:31 pm
IDA
-
DEN
1h 51mnonstop
$294United Airlines
Mon, Dec 29 - Thu, Jan 8
Delta Logo
7:10 am - 12:27 pm
DEN
-
IDA
5h 17m1 stop
Delta Logo
5:55 am - 11:00 am
IDA
-
DEN
5h 05m1 stop
$299Delta
Mon, Dec 29 - Sat, Jan 3
Multiple Airlines Logo
10:29 pm - 4:40 pm
DEN
-
IDA
18h 11m1 stop
Multiple Airlines Logo
6:44 pm - 10:02 am
IDA
-
DEN
15h 18m1 stop
$302Multiple Airlines
Wed, Dec 31 - Tue, Jan 6

United Airlines flights from Denver to Idaho Falls

Our best United Airlines deals on Denver to Idaho Falls flight tickets
United Airlines
Jan 9
DEN8:00 amDenver Intl
1h 56m
IDA9:56 amIdaho Falls Fanning Field
Jan 11
IDA4:19 pmIdaho Falls Fanning Field
1h 54m
DEN6:13 pmDenver Intl
$189
Find similar
United Airlines
Dec 24
DEN7:20 pmDenver Intl
1h 54m
IDA9:14 pmIdaho Falls Fanning Field
Jan 1
IDA6:40 amIdaho Falls Fanning Field
2h 02m
DEN8:42 amDenver Intl
$249
Find similar
United Airlines
Dec 31
DEN11:45 amDenver Intl
1h 45m
IDA1:30 pmIdaho Falls Fanning Field
Jan 8
IDA4:19 pmIdaho Falls Fanning Field
1h 54m
DEN6:13 pmDenver Intl
$264
Find similar

Alaska Airlines flights from Denver to Idaho Falls

Our best Alaska Airlines deals on Denver to Idaho Falls flight tickets
Alaska Airlines
Jan 9
DEN1:37 pmDenver Intl
28h 41m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
Jan 11
IDA6:58 pmIdaho Falls Fanning Field
28h 37m
1 stop
DEN11:35 pmDenver Intl
$312
Find similar
Alaska Airlines
Jan 9
DEN12:34 pmDenver Intl
29h 44m
2 stops
IDA6:18 pmIdaho Falls Fanning Field
Jan 25
IDA6:58 pmIdaho Falls Fanning Field
28h 37m
1 stop
DEN11:35 pmDenver Intl
$318
Find similar
Alaska Airlines
Jan 15
DEN7:00 amDenver Intl
15h 59m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 18
IDA9:00 amIdaho Falls Fanning Field
25h 53m
2 stops
DEN10:53 amDenver Intl
$348
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 December 18, 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 1/9

8:00 am-9:56 am

Nonstop1h 56m

Idaho Falls Fanning Field

Sun 1/11

4:19 pm-6:13 pm

Nonstop1h 54m

$189

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 1/9

11:45 am-1:30 pm

Nonstop1h 45m

Idaho Falls Fanning Field

Sun 1/25

4:19 pm-6:13 pm

Nonstop1h 54m

$249

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 1/9

3:59 pm-10:19 pm

1 stop6h 20m

Idaho Falls Fanning Field

Sun 1/25

5:25 am-11:51 am

1 stop6h 26m

$254

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 12/31

11:45 am-1:30 pm

Nonstop1h 45m

Idaho Falls Fanning Field

Thu 1/8

4:19 pm-6:13 pm

Nonstop1h 54m

$264

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Mon 12/29

7:10 am-12:27 pm

1 stop5h 17m

Idaho Falls Fanning Field

Fri 1/2

6:57 pm-10:56 pm

1 stop3h 59m

$269

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 12/31

8:00 am-9:58 am

Nonstop1h 58m

Idaho Falls Fanning Field

Sat 1/3

6:40 am-8:42 am

Nonstop2h 02m

$279

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 1/9

3:59 pm-10:19 pm

1 stop6h 20m

Idaho Falls Fanning Field

Sun 1/25

6:35 pm-10:36 pm

1 stop4h 01m

$284

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Mon 12/29

9:05 pm-10:59 pm

Nonstop1h 54m

Idaho Falls Fanning Field

Thu 1/8

2:40 pm-4:31 pm

Nonstop1h 51m

$294

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Mon 12/29

7:10 am-12:27 pm

1 stop5h 17m

Idaho Falls Fanning Field

Sat 1/3

5:55 am-11:00 am

1 stop5h 05m

$299

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 12/31

10:29 pm-4:40 pm

1 stop18h 11m

Idaho Falls Fanning Field

Tue 1/6

6:44 pm-10:02 am

1 stop15h 18m

$302

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 $208. 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 $369.

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 $190. Try not to purchase tickets at noon because they tend to be around $329. 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 $280 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 4 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.

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 December 2025, prices for Denver to Idaho Falls flights are approximately 41% 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

$240

Fastest flight time

1h 45m

Direct flights

Mon, Tue, Thu, Fri and Sat

Airports in Idaho Falls

1 airport
The best flight deal from Denver to Idaho Falls found on momondo in the last 72 hours is $240
The fastest flight from Denver to Idaho Falls takes 1h 45m
Direct flights go from Denver to Idaho Falls on Monday, Tuesday, Thursday, Friday and Saturday. 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

  • 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 45m.

  • 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
700 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to Idaho Falls

    United Airlines flies from Denver to Idaho Falls around 27 times per week, with 9,091 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 $309 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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