IDA - DEN

$152 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 7/24. 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
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$189
Overall average: $264
United Airlines
Fri 5/8Thu 5/14
IDA - DEN • Non-stop
Cheapest one-way
$152
Typical prices: $43-$240
United Airlines
Fri 7/24
IDA - DEN • Non-stop
Top airlines
United Airlines
Cheapest • from $189 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 20% price drop
June
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

Fri, May 8 - Thu, May 14
United Airlines Logo
5:26 pm - 7:21 pm
IDA
-
DEN
1h 55mnonstop
United Airlines Logo
11:45 am - 1:25 pm
DEN
-
IDA
1h 40mnonstop
$189United Airlines
Tue, Jun 2 - Thu, Jun 11
United Airlines Logo
6:03 pm - 7:56 pm
IDA
-
DEN
1h 53mnonstop
United Airlines Logo
11:45 am - 1:24 pm
DEN
-
IDA
1h 39mnonstop
$197United Airlines
Thu, Feb 12 - Mon, Feb 16
United Airlines Logo
2:40 pm - 4:29 pm
IDA
-
DEN
1h 49mnonstop
United Airlines Logo
8:00 am - 9:48 am
DEN
-
IDA
1h 48mnonstop
$204United Airlines
Tue, May 5 - Tue, May 12
Delta Logo
6:58 pm - 10:29 pm
IDA
-
DEN
3h 31m
1 stop
Delta Logo
6:25 pm - 10:14 pm
DEN
-
IDA
3h 49m
1 stop
$209Delta
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
10:31 pm - 3:56 am
IDA
-
DEN
5h 25m
1 stop
Multiple Airlines Logo
7:27 am - 3:30 pm
DEN
-
IDA
8h 03m
1 stop
$216Multiple Airlines
Thu, Mar 5 - Sun, Mar 8
United Airlines Logo
2:35 pm - 4:25 pm
IDA
-
DEN
1h 50mnonstop
United Airlines Logo
8:10 am - 9:56 am
DEN
-
IDA
1h 46mnonstop
$221United Airlines
Fri, Feb 13 - Tue, Feb 17
United Airlines Logo
5:33 pm - 7:25 pm
IDA
-
DEN
1h 52mnonstop
United Airlines Logo
8:00 am - 9:48 am
DEN
-
IDA
1h 48mnonstop
$230United Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
10:31 pm - 8:46 pm
IDA
-
DEN
22h 15m
2 stops
Multiple Airlines Logo
7:27 am - 3:30 pm
DEN
-
IDA
8h 03m
1 stop
$241Multiple Airlines
Fri, Feb 13 - Mon, Feb 16
United Airlines Logo
2:40 pm - 4:29 pm
IDA
-
DEN
1h 49mnonstop
United Airlines Logo
8:00 am - 9:48 am
DEN
-
IDA
1h 48mnonstop
$247United Airlines
Mon, Mar 2 - Sat, Mar 7
United Airlines Logo
5:33 pm - 7:25 pm
IDA
-
DEN
1h 52mnonstop
United Airlines Logo
8:10 am - 9:56 am
DEN
-
IDA
1h 46mnonstop
$249United Airlines
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.

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 Wednesday, 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 October, where tickets cost $224 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $339 and $338 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 4 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$152
Most popular time to fly and prices are also 2% lower on average.
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 $152 for a one-way ticket and $189 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, JetBlue, Delta, Alaska Airlines, KLM, Air France, and Virgin Atlantic.

  • 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?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Idaho Falls and Denver, with SkyTeam being the most commonly used for this route.

  • 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, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Denver are Delta and United Airlines. With an average price for the route of $268 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $285 and an overall rating of 7.4.

  • 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 $260 or less one-way and $331 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 3 airlines serving 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.
7.9
DeltaOverall score based on 8123 reviews
8.1Boarding
7.8Entertainment
7.2Food
7.9Comfort
8.5Crew
Airline reviews

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

2.0 MediocreJulia, Jan 2026
MSP - BOS
Read more Delta reviews

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

No WiFi. Comfort plus should have alcohol provided, crew only offered water or tea. Who the heck wants tea?

The flight was delayed and oversold. I volunteered to give up my seat for compensation. Thinking I could get a good night's sleep instead of arriving home at 2 am. It took over an hour to get the new reservation confirmed, three different gate attendants, and two red coats. It took even longer to confirm the overnight hotel, and when I arrived, the line was 45 minutes long, with two people checking in, and at least 15 people slowly, very slowly—no food except frozen convenience food, no coupon for food from airlines. Slept, headed back to the airport, and that flight had an equipment change and a gate change just as they were about to board. It took an additional hour to board as they cleaned the plane from storage.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

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

Information on your arrival and departure airports