IDA - DEN

$102 Find Cheap Flights from Idaho Falls to Denver - Compare and Save

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 8/10. 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

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Everything you should know

Cheapest round-trip
$226
Typical prices: $249-$379
Multiple Airlines
Mon 9/14Wed 9/16
IDA - DEN • 1 stop
Cheapest non-stop
$249
Typical prices: $249-$379
United Airlines
Fri 9/4Mon 9/7
IDA - DEN • Non-stop
Top airlines
Cheapest • from $249 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 1h 52m
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 12 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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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, Sep 14 - Wed, Sep 16
Multiple Airlines Logo
6:21 pm - 3:52 am
IDA
-
DEN
9h 31m
1 stop
Multiple Airlines Logo
10:54 pm - 12:04 pm
DEN
-
IDA
37h 10m
2 stops
$226Multiple Airlines
Mon, Sep 14 - Wed, Sep 16
Multiple Airlines Logo
6:21 pm - 3:52 am
IDA
-
DEN
9h 31m
1 stop
Multiple Airlines Logo
10:54 pm - 12:04 pm
DEN
-
IDA
37h 10m
2 stops
$230Multiple Airlines
Mon, Sep 14 - Wed, Sep 16
Multiple Airlines Logo
6:21 pm - 3:52 am
IDA
-
DEN
9h 31m
1 stop
Multiple Airlines Logo
10:54 pm - 12:04 pm
DEN
-
IDA
37h 10m
2 stops
$234Multiple Airlines
Mon, Aug 10 - Fri, Aug 14
Multiple Airlines Logo
10:54 pm - 6:00 pm
IDA
-
DEN
19h 06m
1 stop
Multiple Airlines Logo
6:40 am - 10:04 pm
DEN
-
IDA
15h 24m
1 stop
$237Multiple Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
4:04 pm - 5:58 pm
IDA
-
DEN
1h 54mnonstop
United Airlines Logo
8:05 am - 9:51 am
DEN
-
IDA
1h 46mnonstop
$249United Airlines
Fri, Aug 14 - Mon, Aug 17
Multiple Airlines Logo
10:54 pm - 9:09 pm
IDA
-
DEN
22h 15m
2 stops
Multiple Airlines Logo
10:00 am - 4:05 pm
DEN
-
IDA
6h 05m
1 stop
$251Multiple Airlines
Sat, Aug 8 - Sun, Aug 9
United Airlines Logo
5:54 pm - 7:45 pm
IDA
-
DEN
1h 51mnonstop
United Airlines Logo
8:05 am - 9:50 am
DEN
-
IDA
1h 45mnonstop
$257United Airlines
Wed, Jan 6 - Sun, Jan 10
United Airlines Logo
5:57 pm - 7:40 pm
IDA
-
DEN
1h 43mnonstop
United Airlines Logo
7:45 am - 9:28 am
DEN
-
IDA
1h 43mnonstop
$258United Airlines
Fri, Sep 4 - Fri, Sep 18
United Airlines Logo
2:25 pm - 4:15 pm
IDA
-
DEN
1h 50mnonstop
United Airlines Logo
1:39 pm - 3:23 pm
DEN
-
IDA
1h 44mnonstop
$261United Airlines
Fri, Aug 7 - Mon, Aug 10
Multiple Airlines Logo
10:54 pm - 9:05 am
IDA
-
DEN
10h 11m
1 stop
Multiple Airlines Logo
6:10 am - 4:05 pm
DEN
-
IDA
9h 55m
1 stop
$263Multiple 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.

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 September.

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 Saturday, 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 Sunday 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 July and June, where the average cost of round-trip tickets is $383 and $356 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 12 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low season

March

Cheapest flight

$102
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 14% 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 5 days, the lowest price for a flight from Idaho Falls to Denver was $102 for a one-way ticket and $226 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?

    American Airlines, Delta, JetBlue, and Alaska Airlines offer inflight Wi-Fi service on the Idaho Falls to Denver flight route.

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

    The Embraer 175 (Enhanced Winglets) 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.

  • 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 $289 or less one-way and $426 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 airline 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 10006 reviews
7.3Comfort
6.6Food
7.1Entertainment
8.1Crew
7.7Boarding
Airline reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

4.0 OkayDavid, Jun 2026
FAR - DEN
Read more United Airlines reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

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.

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.

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

Information on your arrival and departure airports