$53 Find Cheap Flights from Denver to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Idaho departing on 11/2. 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 Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Idaho, 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 Denver to Idaho, as well as popular online travel agencies
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Cheap Flights from Denver to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$102
Idaho Falls
Idaho Fallsnonstop$189
Hailey
Haileynonstop$229
Lewiston
Lewiston2 stops$321
Twin Falls
Twin Falls1 stop$366
Pocatello
Pocatello1 stop$387
Spokane
Spokanenonstop$109
Boise
Boisenonstop$102
Idaho Falls
Idaho Fallsnonstop$189
Hailey
Haileynonstop$229
Lewiston
Lewiston2 stops$321
Twin Falls
Twin Falls1 stop$366
Pocatello
Pocatello1 stop$387
Spokane
Spokanenonstop$109

Book Cheap Denver to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Idaho 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 Denver to Idaho

Fri, Oct 24 - Sun, Oct 26
Frontier Logo
9:48 am - 11:43 amDEN-BOI
1h 55mnonstop
Frontier Logo
12:28 pm - 2:28 pmBOI-DEN
2h 00mnonstop
$102Frontier
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Thu, Oct 23 - Sun, Oct 26
Frontier Logo
9:48 am - 11:08 amDEN-GEG
2h 20mnonstop
Frontier Logo
11:53 am - 3:19 pmGEG-DEN
2h 26mnonstop
$109Frontier
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Thu, Oct 23 - Sun, Oct 26
Multiple Airlines Logo
7:02 pm - 11:57 pmDEN-BOI
4h 55m1 stop
Multiple Airlines Logo
12:28 pm - 2:28 pmBOI-DEN
2h 00mnonstop
$137Multiple Airlines
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Sun, Nov 2 - Wed, Nov 12
Multiple Airlines Logo
9:53 am - 11:48 amDEN-BOI
1h 55mnonstop
Multiple Airlines Logo
8:50 am - 2:41 pmBOI-DEN
5h 51m1 stop
$149Multiple Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
United Airlines Logo
7:07 pm - 8:52 pmDEN-IDA
1h 45mnonstop
United Airlines Logo
5:56 pm - 7:40 pmIDA-DEN
1h 44mnonstop
$189United Airlines
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Sat, Oct 4 - Sat, Oct 11
United Airlines Logo
8:00 am - 9:48 amDEN-IDA
1h 48mnonstop
United Airlines Logo
10:50 am - 12:39 pmIDA-DEN
1h 49mnonstop
$194United Airlines
Find Deal
Fri, Oct 24 - Sun, Oct 26
Delta Logo
6:25 am - 1:20 pmDEN-BOI
6h 55m1 stop
Delta Logo
6:00 am - 9:29 amBOI-DEN
3h 29m1 stop
$197Delta
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Tue, Nov 4 - Mon, Nov 10
Southwest Logo
5:30 am - 11:10 amDEN-BOI
5h 40m1 stop
Southwest Logo
5:00 am - 7:00 amBOI-DEN
2h 00mnonstop
$209Southwest
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Wed, Nov 5 - Sat, Nov 8
Delta Logo
12:25 pm - 6:51 pmDEN-BOI
6h 26m1 stop
Delta Logo
5:25 am - 11:26 amBOI-DEN
6h 01m1 stop
$213Delta
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Sun, Oct 26 - Mon, Oct 27
Southwest Logo
7:50 am - 9:50 amDEN-BOI
2h 00mnonstop
Southwest Logo
5:40 pm - 7:30 pmBOI-DEN
1h 50mnonstop
$227Southwest
Find Deal
Booking Insights

KAYAK's insights & trends for Denver to Idaho flights

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

What is the cheapest Denver to Idaho flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Idaho from Denver found in the last 72 hours was to Boise, at $95 round-trip. The most popular route is from Denver (DEN) to Boise (BOI), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $95.

Can I save money by flying with a layover from Denver to Idaho?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $325, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Idaho, 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 Denver to Idaho is September, when tickets cost $199 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $443 and $391 respectively.

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

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

When flying from Denver to Idaho, you should consider leaving on a Sunday and avoid Mondays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Idaho, 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 Denver to Idaho, you should book around 4 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$53
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Denver to Boise

FAQs - booking Idaho flights

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

    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 Denver to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver to Idaho 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 Denver to Idaho?

    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 from Denver to Idaho with an airline and back with another airline.

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

    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 from Denver to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally in the morning, when round-trip flights cost $253 on average. Morning departures are around 23% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally at night, which is peak travel time and where the average cost of a ticket is $331.

Reviews of the top 5 airlines serving from Denver to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Denver to Idaho. 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 Denver to Idaho? 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
SouthwestOverall score based on 4242 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

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.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

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!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

Very bad! No good service delayed my second connection flight

Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.

2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

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

Information on your arrival and departure airports

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