$39 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 4/2. 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, 0 bags

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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Flight Deals

Cheap Flights from Denver to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$113
Idaho Falls
Idaho Fallsnonstop$249
Hailey
Hailey2 stops$275
Lewiston
Lewiston1 stop$332
Twin Falls
Twin Falls1 stop$255
Pocatello
Pocatello1 stop$367
Spokane
Spokanenonstop$186
Boise
Boisenonstop$113
Idaho Falls
Idaho Fallsnonstop$249
Hailey
Hailey2 stops$275
Lewiston
Lewiston1 stop$332
Twin Falls
Twin Falls1 stop$255
Pocatello
Pocatello1 stop$367
Spokane
Spokanenonstop$186

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

Thu, Apr 2 - Sun, Apr 5
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
$113Frontier
Thu, Apr 9 - Sun, Apr 12
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
$114Frontier
Thu, May 21 - Thu, May 28
Frontier Logo
10:25 am - 12:30 pm
DEN
-
BOI
2h 05mnonstop
Frontier Logo
1:25 pm - 3:41 pm
BOI
-
DEN
2h 16mnonstop
$162Frontier
Thu, May 7 - Sun, May 10
Frontier Logo
10:22 am - 12:27 pm
DEN
-
BOI
2h 05mnonstop
Frontier Logo
1:22 pm - 3:38 pm
BOI
-
DEN
2h 16mnonstop
$163Frontier
Thu, Apr 9 - Tue, Apr 14
Multiple Airlines Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
Multiple Airlines Logo
6:32 am - 12:20 pm
BOI
-
DEN
5h 48m
1 stop
$166Multiple Airlines
Wed, Jun 10 - Tue, Jun 16
Multiple Airlines Logo
7:26 pm - 7:57 pm
DEN
-
GEG
25h 31m
1 stop
Multiple Airlines Logo
11:35 am - 2:59 pm
GEG
-
DEN
2h 24mnonstop
$224Multiple Airlines
Fri, Sep 4 - Fri, Sep 11
United Airlines Logo
2:15 pm - 4:07 pm
DEN
-
WYS
1h 52mnonstop
United Airlines Logo
5:45 pm - 7:30 pm
WYS
-
DEN
1h 45mnonstop
$243United Airlines
Thu, Apr 16 - Mon, Apr 20
United Airlines Logo
8:10 am - 9:53 am
DEN
-
IDA
1h 43mnonstop
United Airlines Logo
5:20 pm - 7:10 pm
IDA
-
DEN
1h 50mnonstop
$249United Airlines
Wed, Apr 22 - Wed, May 6
Delta Logo
7:45 pm - 12:01 pm
DEN
-
SUN
16h 16m
2 stops
Delta Logo
3:34 pm - 5:40 pm
SUN
-
DEN
26h 06m
2 stops
$275Delta
Wed, Jul 8 - Sat, Jul 18
Delta Logo
7:09 pm - 10:32 pm
DEN
-
IDA
3h 23m
1 stop
Delta Logo
6:00 am - 9:12 am
IDA
-
DEN
3h 12m
1 stop
$284Delta
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 $79 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 $79.

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

The average price for all round-trip flights from Denver to Idaho depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Idaho is generally in the morning, when round-trip flights cost $205 on average. Morning departures are around 37% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the evening, which is peak travel time and where the average cost of a ticket is $326.

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 $326, 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 February, when tickets cost $130 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $280 and $277 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 Thursday 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 Mondays.

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 2 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$39
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 5% increase in price.
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.

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 4324 reviews
8.0Comfort
8.6Crew
7.0Food
7.5Entertainment
8.1Boarding
Airline reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

10.0 ExcellentMartie, Mar 2026
LGB - BNA
Read more Southwest reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

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.

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

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

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.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

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

Information on your arrival and departure airports