$50 Find Cheap Flights from Colorado to Idaho

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Low seasonJanuary
High seasonJuly
Cheapest flight$50
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Denver to Idaho Falls

FAQs for booking flights from Colorado to Idaho

  • How does KAYAK find such low prices on flights from Colorado 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 Colorado to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado 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 Colorado 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 Colorado 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 Colorado 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 Colorado to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Idaho?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Idaho is Boise Air Term. Gowen Fld Airport (BOI), with an average flight price of $155.

  • What is the cheapest day to fly to Idaho?

    Based on KAYAK data, the cheapest day to fly to Idaho is Saturday where round-trip tickets can be as cheap as $294. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $400 on average.

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

    The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $297 on average. Morning departures are around 1% 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 $310.

  • What is the cheapest flight to Idaho?

    The cheapest ticket to Idaho from Colorado found in the last 72 hours was to Boise, at $70 round-trip. The most popular route is Denver (DEN) to Boise (BOI) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $70.

  • What is the cheapest month to fly from Colorado to Idaho?

    The cheapest month for flights from Colorado to Idaho is June, when tickets cost $184 (return) on average. On the other hand, the most expensive months are August and April, when the average cost of round-trip tickets is $438 and $434 respectively.

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

    To get a below average price on the flight from Colorado to Idaho, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

  • How long is the flight to Idaho?

    An average nonstop flight from Colorado to Idaho takes 5h 18m, covering a distance of 605 miles. The shortest route is Denver (DEN) to Jackson (JAC) with an average flight time of 1h 27m.

  • What are the most popular destinations in Idaho?

    Based on KAYAK flight searches, the most popular destination is Boise (38% of total searches to Idaho). The next most popular destinations are Spokane (28%) and Jackson (13%). Searches for flights to Idaho Falls (12%), to Hailey (3%) and to West Yellowstone (3%) are also popular.

Top 5 airlines serving from Colorado to Idaho

Need help choosing which airline to fly with from Colorado 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
Alaska AirlinesOverall score based on 9968 reviews
7.1Entertainment
7.9Comfort
8.2Boarding
8.5Crew
7.1Food
Airline reviews

My youngest didn't have a assigned seat until we biard6the plane.

2.0 MediocreStephanie, Apr 2025SAN - SLC
Read more Alaska Airlines reviews

My youngest didn't have a assigned seat until we biard6the plane.

Booked a premium seats weeks ago and got an email the night before that id instead be seated in the cabin. Only reason I booked this overnight flight was for the better seating. All they are doing to compensate is giving a $29 coupon to use on another flight. I won’t be booking this airline again.

It was all great all around. Will travel with Alaska next trip.

I got the last seat on the plane, in the back in the corner against the window, and I paid a competitive price for my ticket several weeks before the flight.

Everything was good. However, the selections of movies and TV shows were boring and unexciting. It was disappointing.

Long delay before boarding. By the time I was informed of the delay I was already at the gate.

There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Flight 351 SEA to BOI was terrible. We got to cruising altitude and I needed to use the restroom but the fasten seatbelt sign never came off. There was no turbulence and I'd felt the plane level off so I stood up to use the restroom about 15 minutes after we leveled off. The stewardess went over the intercom and said I needed to be seated because the captain hadn't turned off the fasten seatbelt sign....Which... Fair.... But not five minutes later she went and used the bathroom. Felt very unprofessional to leave a paying customer with a burning urethra for the entire flight and bark at them to sit down and still use the bathroom yourself. They never did turn off the seatbelt sign.

For longer trips, snacks are puny, boring and don’t have ANY nutritional value.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

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 poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

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.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Booked two aisle seats and were switched to an aisle and middle. Not happy.

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

Book cheap flights from Colorado to Idaho

Recent round-trip flight deals

6/15Sun
nonstopAllegiant Air
1h 44mDEN-IDA
6/29Sun
nonstopAllegiant Air
1h 48mIDA-DEN
$89
6/15Sun
nonstopAllegiant Air
1h 44mDEN-IDA
6/29Sun
nonstopAllegiant Air
1h 48mIDA-DEN
$92
5/27Tue
nonstopUnited Airlines
1h 59mDEN-BOI
5/28Wed
nonstopUnited Airlines
1h 57mBOI-DEN
$189
5/28Wed
1 stopAlaska Airlines
5h 56mDEN-BOI
6/4Wed
1 stopAlaska Airlines
6h 26mBOI-DEN
$199
5/24Sat
nonstopSouthwest
1h 55mDEN-BOI
5/26Mon
nonstopSouthwest
1h 55mBOI-DEN
$200
5/23Fri
1 stopDelta
3h 35mDEN-WYS
5/27Tue
1 stopDelta
4h 15mWYS-DEN
$202
6/17Tue
1 stopAlaska Airlines
7h 28mDEN-GEG
6/24Tue
1 stopAlaska Airlines
4h 52mGEG-DEN
$206
5/24Sat
1 stopDelta
4h 24mDEN-BOI
5/25Sun
1 stopDelta
4h 50mBOI-DEN
$209
8/19Tue
nonstopSouthwest
1h 55mDEN-BOI
8/23Sat
1 stopSouthwest
4h 55mBOI-DEN
$210
5/27Tue
nonstopUnited Airlines
1h 46mDEN-IDA
6/3Tue
nonstopUnited Airlines
1h 45mIDA-DEN
$219

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Recent one-way flight deals

5/25Sun
nonstopAllegiant Air
1h 42mDEN-IDA
$50
5/29Thu
nonstopFrontier
1h 57mDEN-BOI
$66
7/1Tue
1 stopDelta
5h 48mDEN-JAC
$86
6/11Wed
nonstopUnited Airlines
2h 01mDEN-BOI
$95
8/6Wed
nonstopUnited Airlines
2h 23mDEN-GEG
$99
6/9Mon
1 stopDelta
5h 08mDEN-WYS
$99
7/1Tue
1 stopAlaska Airlines
6h 20mDEN-BOI
$104
7/30Wed
2 stopsSouthwest
7h 20mDEN-BOI
$110
8/1Fri
1 stopAlaska Airlines
13h 59mDEN-GEG
$114
7/4Fri
2 stopsSouthwest
10h 15mDEN-GEG
$123

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Last minute flights from Colorado to Idaho

Last minute flight, train and bus deals

5/1Thu
multi-stopDelta
4h 51mDEN-IDA
5/5Mon
multi-stopDelta
6h 04mIDA-DEN
$324
5/1Thu
nonstopUnited Airlines
1h 46mDEN-IDA
5/5Mon
nonstopUnited Airlines
1h 59mIDA-DEN
$329
5/1Thu
nonstopUnited Airlines
1h 50mDEN-IDA
5/4Sun
nonstopUnited Airlines
1h 45mIDA-DEN
$359
5/1Thu
multi-stopAlaska Airlines
6h 47mDEN-BOI
6/4Wed
multi-stopAlaska Airlines
6h 26mBOI-DEN
$365
5/1Thu
multi-stopAmerican Airlines
7h 29mDEN-IDA
5/4Sun
multi-stopAmerican Airlines
7h 39mIDA-DEN
$379
5/5Mon
multi-stopAlaska Airlines
5h 16mDEN-BOI
5/13Tue
multi-stopAlaska Airlines
7h 39mBOI-DEN
$425
5/1Thu
multi-stopAmerican Airlines
5h 22mGJT-GEG
5/4Sun
multi-stopAmerican Airlines
5h 33mGEG-GJT
$479
5/2Fri
multi-stopDelta
6h 23mDEN-SUN
5/6Tue
multi-stopDelta
6h 18mSUN-DEN
$483
5/5Mon
multi-stopSouthwest
6h 10mDEN-BOI
5/13Tue
multi-stopSouthwest
5h 50mBOI-DEN
$511
5/5Mon
multi-stopSouthwest
6h 55mDEN-BOI
5/13Tue
multi-stopSouthwest
8h 00mBOI-DEN
$516

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Everything you need to know for your flight to Idaho

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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