IDA - DEN

$42 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 7/27. 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

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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Flights 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

Thu, Jul 10 - Thu, Jul 17
Allegiant Air Logo
5:49 pm - 7:37 pmIDA-DEN
1h 48mnonstop
Allegiant Air Logo
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
$84Allegiant Air
Find Deal
Thu, Jul 10 - Sun, Jul 13
Allegiant Air Logo
5:49 pm - 7:37 pmIDA-DEN
1h 48mnonstop
Allegiant Air Logo
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
$88Allegiant Air
Find Deal
Sat, Jul 12 - Sat, Jul 19
United Airlines Logo
6:03 pm - 7:45 pmIDA-DEN
1h 42mnonstop
United Airlines Logo
8:00 am - 9:44 amDEN-IDA
1h 44mnonstop
$189United Airlines
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Tue, Sep 16 - Sat, Sep 20
Delta Logo
6:50 pm - 10:33 pmIDA-DEN
3h 43m1 stop
Delta Logo
3:40 pm - 10:20 pmDEN-IDA
6h 40m1 stop
$209Delta
Find Deal
Thu, Jul 3 - Mon, Jul 7
Delta Logo
6:00 am - 9:23 amIDA-DEN
3h 23m1 stop
Delta Logo
6:10 pm - 10:29 pmDEN-IDA
4h 19m1 stop
$214Delta
Find Deal
Mon, Jul 28 - Sat, Aug 2
United Airlines Logo
4:13 pm - 5:58 pmIDA-DEN
1h 45mnonstop
United Airlines Logo
9:05 pm - 10:51 pmDEN-IDA
1h 46mnonstop
$219United Airlines
Find Deal
Thu, Jul 24 - Sun, Jul 27
 Logo
5:49 pm - 7:37 pmIDA-DEN
1h 48mnonstop
 Logo
7:00 am - 11:44 amDEN-IDA
28h 44m2 stops
Thu, Sep 18 - Tue, Sep 23
American Airlines Logo
12:43 pm - 9:01 pmIDA-DEN
8h 18m1 stop
American Airlines Logo
5:44 am - 12:59 pmDEN-IDA
7h 15m1 stop
$269American Airlines
Find Deal
Fri, Jul 25 - Sun, Jul 27
 Logo
5:04 pm - 9:23 amIDA-DEN
16h 19m2 stops
 Logo
3:20 pm - 5:04 pmDEN-IDA
1h 44mnonstop
Wed, Aug 20 - Thu, Aug 21
American Airlines Logo
1:32 pm - 7:48 pmIDA-DEN
6h 16m1 stop
American Airlines Logo
12:47 pm - 9:19 pmDEN-IDA
8h 32m1 stop
$351American Airlines
Find Deal
Useful Info

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 Sundays 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 May, where tickets cost $243 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $417 and $388 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. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonFebruary
High seasonJune
Cheapest flight$42
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 16% 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 $42 for a one-way ticket and $84 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, Aeromexico, Delta, Virgin Atlantic, Air France, JetBlue, KLM, and Alaska Airlines.

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

    The Canadair (Bombardier) Regional Jet 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, 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 $278 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $333 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 $213 or less one-way and $381 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

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Thursday

Allegiant Air, Copa Airlines, United Airlines

Allegiant Air, Copa Airlines, +1 more

Friday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Saturday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Sunday

Allegiant Air, Copa Airlines, United Airlines

Allegiant Air, Copa Airlines, +1 more

See more direct flights

Direct returns

Denver Intl to Idaho Falls Fanning Field

Monday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Thursday

Allegiant Air, Copa Airlines, United Airlines

Allegiant Air, Copa Airlines, +1 more

Friday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Saturday

Copa Airlines, United Airlines

Copa Airlines, United Airlines

Sunday

Allegiant Air, Copa Airlines, United Airlines

Allegiant Air, Copa Airlines, +1 more

See more direct flights

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.
8.0
DeltaOverall score based on 7963 reviews
7.3Food
8.5Crew
7.9Entertainment
8.2Boarding
7.9Comfort
Airline reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

4.0 OkayKoonj, Jun 2025MSP - AUS
Read more Delta reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

First time flying with them and will definitely fly again in the future. Crew was so nice and friendly, fought was seamless. They are simple planes, no entertainment, but it’s fine for a short flight or if you have personal devices Rates are competitive, and they did so well with keeping the flight on time after a tropical storm, where other airlines had delays and cancellations.

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

I didn't even take this flight. My plans changed and I couldn't get ahold of customer service and the website kept breaking down during the attempt to change the flight. I wound up taking another airline entirely and eating the cost.

The worst flying experience ever 3 delays. No accommodations. Had to deboard the plane after being delayed.

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

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