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Cheap flights from Denver to Idaho Falls from $42

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 6/19. 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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Denver to Idaho Falls.
3:24 pm - 5:06 pmDEN-IDA
1h 42mnonstop
5:51 pm - 7:41 pmIDA-DEN
1h 50mnonstop
$84Allegiant Air
Find Deal
Thu, May 29 - Sun, Jun 1
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
5:49 pm - 7:37 pmIDA-DEN
1h 48mnonstop
$97Allegiant Air
Find Deal
Thu, Jun 19 - Sun, Jun 22
2:45 pm - 9:17 pmDEN-IDA
6h 32m1 stop
7:00 am - 3:47 pmIDA-DEN
8h 47m1 stop
$209American Airlines
Find Deal
Fri, May 9 - Mon, May 12
2:35 pm - 10:10 pmDEN-IDA
7h 35m1 stop
7:43 am - 3:22 pmIDA-DEN
7h 39m1 stop
$219American Airlines
Find Deal
Fri, Apr 11 - Sun, Apr 13
7:46 am - 9:32 amDEN-IDA
1h 46mnonstop
4:22 pm - 6:06 pmIDA-DEN
1h 44mnonstop
$249United Airlines
Find Deal
Tue, May 13 - Tue, May 20
3:24 pm - 5:06 pmDEN-IDA
1h 42mnonstop
6:00 am - 12:00 pmIDA-DEN
6h 00m1 stop
Thu, May 22 - Sun, May 25
6:25 pm - 10:51 pmDEN-IDA
4h 26m1 stop
6:50 pm - 10:30 pmIDA-DEN
3h 40m1 stop
$284Delta
Find Deal
Thu, May 29 - Sun, Jun 1
7:46 am - 9:32 amDEN-IDA
1h 46mnonstop
4:22 pm - 6:06 pmIDA-DEN
1h 44mnonstop
$304United Airlines
Find Deal
Fri, May 9 - Mon, May 12
12:54 pm - 6:10 pmDEN-IDA
5h 16m1 stop
6:00 am - 9:36 amIDA-DEN
3h 36m1 stop
$325Delta
Find Deal
Thu, May 29 - Tue, Jun 3
3:24 pm - 5:06 pmDEN-IDA
1h 42mnonstop
6:00 am - 6:09 pmIDA-DEN
36h 09m2 stops
Thu, May 22 - Sun, May 25

Delta flights from Denver to Idaho Falls

Our best Delta deals on Denver to Idaho Falls flight tickets
Delta
May 29
DEN6:25 pmDenver Intl
4h 26m
1 stop
IDA10:51 pmIdaho Falls Fanning Field
Jun 1
IDA6:50 pmIdaho Falls Fanning Field
3h 40m
1 stop
DEN10:30 pmDenver Intl
Delta
May 29
DEN12:54 pmDenver Intl
5h 16m
1 stop
IDA6:10 pmIdaho Falls Fanning Field
Jun 3
IDA6:00 amIdaho Falls Fanning Field
3h 36m
1 stop
DEN9:36 amDenver Intl
Delta
Jun 13
DEN5:30 amDenver Intl
5h 09m
1 stop
IDA10:39 amIdaho Falls Fanning Field
Jun 17
IDA6:55 pmIdaho Falls Fanning Field
3h 21m
1 stop
DEN10:16 pmDenver Intl

Alaska Airlines flights from Denver to Idaho Falls

Our best Alaska Airlines deals on Denver to Idaho Falls flight tickets
Alaska Airlines
May 13
DEN7:55 pmDenver Intl
26h 41m
1 stop
IDA10:36 pmIdaho Falls Fanning Field
May 20
IDA4:20 pmIdaho Falls Fanning Field
7h 45m
1 stop
DEN12:05 amDenver Intl
Alaska Airlines
May 14
DEN2:39 pmDenver Intl
7h 57m
1 stop
IDA10:36 pmIdaho Falls Fanning Field
May 21
IDA4:20 pmIdaho Falls Fanning Field
7h 45m
1 stop
DEN12:05 amDenver Intl
Alaska Airlines
May 7
DEN12:21 pmDenver Intl
10h 15m
1 stop
IDA10:36 pmIdaho Falls Fanning Field
May 14
IDA6:00 amIdaho Falls Fanning Field
15h 15m
2 stops
DEN9:15 pmDenver Intl

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 April, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $299.

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

Our data shows that Tuesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $309. 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 $499.

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 at noon. 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 $399. 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 25 weeks ahead of your departure date. In general, you can expect to find flights to Idaho Falls for around $373 when searching 25 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 $146 on momondo.

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

There are 1 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 March 2025, prices for Denver to Idaho Falls flights are approximately 27% 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

$42

Fastest flight time

1h 42m

Direct flights

Tue, Wed, Thu, Fri and Sat

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Denver in the past 72 hours is $42. The best round-trip flight deal from Denver to Idaho Falls found on momondo in the last 72 hours is $84.
The fastest flight from Denver to Idaho Falls takes 1h 42m
Direct flights go from Denver to Idaho Falls on Tuesday, Wednesday, Thursday, Friday and Saturday. Airlines offering direct flights are: United Airlines and Allegiant Air.
There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)

  • 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 42m.

  • 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 $249Free CancellationRating
7.4
8,603 reviews
Search United Airlines flights
  • United Airlines Flights From Denver to Idaho Falls

    United Airlines flies from Denver to Idaho Falls around 15 times per week, with 8,603 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Denver to Idaho Falls in the last 72 hours was $249 (round-trip), much lower than the average airfare cost of $358 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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