IDA - DEN

$110 Find Cheap Flights from Idaho Falls to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Denver departing on 8/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$241
Typical prices: $333-$219
Multiple Airlines
Mon 6/15Mon 6/22
IDA - DEN • 1 stop
Cheapest non-stop
$249
Typical prices: $279-$219
United Airlines
Thu 10/15Sun 10/18
IDA - DEN • Non-stop
Top airlines
Cheapest • from $269 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 1h 51m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Idaho Falls to Denver (IDA-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho Falls to Denver

Mon, Jun 15 - Mon, Jun 22
Multiple Airlines Logo
10:56 pm - 12:38 am
IDA
-
DEN
25h 42m
1 stop
Multiple Airlines Logo
6:10 am - 4:08 pm
DEN
-
IDA
9h 58m
1 stop
$241Multiple Airlines
Mon, Jun 8 - Thu, Jun 11
Multiple Airlines Logo
10:56 pm - 9:42 pm
IDA
-
DEN
22h 46m
1 stop
Multiple Airlines Logo
10:29 pm - 4:08 pm
DEN
-
IDA
17h 39m
1 stop
$249Multiple Airlines
Mon, Jun 22 - Thu, Jul 2
Multiple Airlines Logo
10:56 pm - 12:38 am
IDA
-
DEN
25h 42m
1 stop
Multiple Airlines Logo
10:29 pm - 4:00 pm
DEN
-
IDA
17h 31m
1 stop
$260Multiple Airlines
Mon, Jun 22 - Thu, Jul 2
Multiple Airlines Logo
10:56 pm - 2:50 pm
IDA
-
DEN
15h 54m
2 stops
Multiple Airlines Logo
10:29 pm - 4:00 pm
DEN
-
IDA
17h 31m
1 stop
$268Multiple Airlines
Thu, Nov 12 - Tue, Nov 17
Delta Logo
6:00 am - 9:44 am
IDA
-
DEN
3h 44m
1 stop
Delta Logo
7:05 am - 12:27 pm
DEN
-
IDA
5h 22m
1 stop
$269Delta
Sat, Jun 13 - Tue, Jun 16
United Airlines Logo
10:35 am - 12:28 pm
IDA
-
DEN
1h 53mnonstop
United Airlines Logo
11:45 am - 1:25 pm
DEN
-
IDA
1h 40mnonstop
$279United Airlines
Tue, Jun 9 - Tue, Jun 16
Delta Logo
3:25 pm - 10:00 pm
IDA
-
DEN
6h 35m
1 stop
Delta Logo
5:40 am - 10:43 am
DEN
-
IDA
5h 03m
1 stop
$284Delta
Mon, Jun 8 - Thu, Jun 11
Multiple Airlines Logo
10:56 pm - 5:10 pm
IDA
-
DEN
18h 14m
2 stops
Multiple Airlines Logo
10:29 pm - 4:08 pm
DEN
-
IDA
17h 39m
1 stop
$290Multiple Airlines
Mon, Jun 22 - Mon, Jun 29
Multiple Airlines Logo
10:56 pm - 2:50 pm
IDA
-
DEN
15h 54m
2 stops
Multiple Airlines Logo
6:10 am - 4:08 pm
DEN
-
IDA
9h 58m
1 stop
$297Multiple Airlines
Sat, May 30 - Tue, Jun 2
Delta Logo
6:54 pm - 10:40 pm
IDA
-
DEN
3h 46m
1 stop
Delta Logo
6:19 pm - 10:42 pm
DEN
-
IDA
4h 23m
1 stop
$299Delta
Booking Insights

KAYAK's insights & trends for Idaho Falls to Denver flights

Get data-powered insights and trends into flights from Idaho Falls to Denver to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Idaho Falls to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Idaho Falls to Denver departing in June.

What’s the cheapest day of the week to fly from Idaho Falls to Denver?

The average price of all round-trip flights from Idaho Falls to Denver clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Denver on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Idaho Falls to Denver. For your return ticket, we recommend flying on a Thursday and avoiding Mondays for the best deals.

What is the cheapest month to fly from Idaho Falls to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Idaho Falls to Denver is March, where tickets cost $220 (return) on average. On the other hand, the most expensive months are November and February, where the average cost of round-trip tickets is $338 and $336 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Idaho Falls to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Idaho Falls to Denver, you should book around 3 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$110
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Idaho Falls to Denver

When to book flights from Idaho Falls to Denver

Are your dates flexible? Find out the best times to travel from Idaho Falls to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Idaho Falls to Denver

  • What is the cheapest flight from Idaho Falls to Denver?

    In the last 3 days, the lowest price for a flight from Idaho Falls to Denver was $110 for a one-way ticket and $249 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Denver?

    No

  • Which airlines offer Wi-Fi service onboard planes from Idaho Falls to Denver?

    All the following airlines offer inflight Wi-Fi service on the Idaho Falls to Denver flight route: American Airlines, Delta, JetBlue, KLM, Virgin Atlantic, Air France, and Alaska Airlines.

  • Which aircraft models fly most regularly from Idaho Falls to Denver?

    The Canadair (Bombardier) Regional Jet CRJ-550 is the aircraft model that flies most regularly on the Idaho Falls to Denver flight route.

  • Which airline alliances offer flights from Idaho Falls to Denver?

    Star Alliance is the only airline alliance operating flights between Idaho Falls and Denver.

  • On which days can I fly direct from Idaho Falls to Denver?

    There are nonstop flights from Idaho Falls to Denver on a daily basis.

  • Which is the best airline for flights from Idaho Falls to Denver, United Airlines or Allegiant Air?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Denver are United Airlines and Allegiant Air. With an average price for the route of $279 and an overall rating of 7.4, United Airlines is the most popular choice. Allegiant Air is also a great choice for the route, with an average price of $84 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Idaho Falls to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho Falls to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Idaho Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho Falls to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Idaho Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Idaho Falls to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $242 or less one-way and $397 or less round-trip.

Prefer to fly direct from Idaho Falls to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Idaho Falls Fanning Field to Denver Intl.
Find which airlines fly direct from Idaho Falls Fanning Field Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Idaho Falls Fanning Field to Denver Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Denver Intl to Idaho Falls Fanning Field

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top airlines flying from Idaho Falls to Denver

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Idaho Falls to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9730 reviews
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
Airline reviews

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

6.0 GoodAnonymous, May 2026
OMA - DEN
Read more United Airlines reviews

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The entertainment options on the seat back video boards were nice.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

Everything you need to know for your flight from Idaho Falls to Denver

Information on your arrival and departure airports