$52 Find Cheap Flights from Idaho to Colorado

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Low seasonApril
High seasonJuly
Cheapest flight$52
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Idaho Falls to Denver

FAQs for booking flights from Idaho to Colorado

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

    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 to Colorado.

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

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

    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 Idaho to Colorado 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 Idaho to Colorado?

    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 Idaho to Colorado 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 Colorado?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Colorado is Denver Intl Airport (DEN), with an average flight price of $263.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Thursday where round-trip tickets can be as cheap as $467. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $571 on average.

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

    The cheapest time of day to fly to Colorado is generally in the evening, when round-trip flights cost $443 on average. Morning departures are around 15% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $512.

  • What is the cheapest flight to Colorado?

    The cheapest ticket to Colorado from Idaho found in the last 72 hours was to Denver, at $159 round-trip. The most popular route is Boise (BOI) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $159.

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

    The cheapest month for flights from Idaho to Colorado is September, when tickets cost $349 (return) on average. On the other hand, the most expensive months are October and January, when the average cost of round-trip tickets is $504 and $478 respectively.

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

    To get a below average price on the flight from Idaho to Colorado, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

  • How long is the flight to Colorado?

    An average nonstop flight from Idaho to Colorado takes 5h 42m, covering a distance of 589 miles. The shortest route is Jackson (JAC) to Denver (DEN) with an average flight time of 1h 36m.

  • What are the most popular destinations in Colorado?

    Based on KAYAK flight searches, the most popular destination is Denver (88% of total searches to Colorado). The next most popular destinations are Colorado Springs (7%) and Grand Junction (2%). Searches for flights to Montrose (2%) are also popular.

Reviews of the top 5 airlines serving from Idaho to Colorado

 
Need help choosing which airline to fly with from Idaho to Colorado? 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 4278 reviews
7.0Food
8.0Comfort
7.6Entertainment
8.6Crew
8.2Boarding
Airline reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

4.0 OkayTraci, Jun 2025OAK - SEA
Read more Southwest reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Flight was an hour late, who knows why. It was OK, nothing outstanding.

Only not having an assigned seat was an issue. Rest was great

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

I like for how they process during check in. It was very smoothly.

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.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

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.

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

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.

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.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

This was one of the first frontier airline flights this spring that wasn't delayed. It actually left on time. Some of the flight crew did not look happy, they didn't smile when the passengers were boarding or getting off the plane, and the passengers initiated greetings, not the staff. To me this was an odd experience to have with any flight/airline. I had a bad experience booking this flight. The price didn't solidify until late hours into the night. Ever time I purchased the ticket, I either received a denial email or an error because the price has changed, but it was never reflected on the flyfrontier or kayak websites until way after midnight on the date of travel. This caused me anxiety and irritation with the websites. Then I noticed a mishap with my name on my voucher as I went to check in, it was incorrect. When I proceeded to correct it, Frontier had no easy, let alone free, way to remedy it. I couldn't correct my name without a $75 charge, I couldn't cancel my voucher to repurchase it with the correct name without a $100 charge, because it was too close to departure. Then calling frontier was nearly impossible to remedy the situation with a human. It's already difficult to want to choose frontier because of all the upcharges, but you feel kinda trapped into doing so because it's the more affordable airline.

Our flight was cancelled. They could do nothing to help us get another flight that was timely. Because the first leg was cancelled we were unable to get to our connection. We had to book on an entirely different airline for today. So we spent more money, lost a day of vacation and will never fly Frontier again, so the 'we are sorry, here is $100 credit' is a joke since we won't be flying on Frontier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Book cheap flights from Idaho to Colorado

Recent round-trip flight deals

7/24Thu
nonstopAllegiant Air
1h 48mIDA-DEN
7/27Sun
nonstopAllegiant Air
1h 44mDEN-IDA
$84
7/17Thu
nonstopAllegiant Air
1h 48mIDA-DEN
7/20Sun
nonstopAllegiant Air
1h 44mDEN-IDA
$85
7/15Tue
nonstopFrontier
2h 19mGEG-DEN
7/22Tue
nonstopFrontier
2h 21mDEN-GEG
$98
7/24Thu
nonstopFrontier
2h 00mBOI-DEN
7/27Sun
nonstopFrontier
1h 56mDEN-BOI
$100
8/27Wed
1 stopDelta
6h 54mGEG-DEN
9/1Mon
1 stopDelta
5h 38mDEN-GEG
$197
8/19Tue
1 stopDelta
4h 13mGEG-COS
8/20Wed
1 stopDelta
6h 41mCOS-GEG
$197
8/27Wed
nonstopSouthwest
1h 55mBOI-DEN
8/31Sun
nonstopSouthwest
1h 55mDEN-BOI
$207
8/28Thu
nonstopSouthwest
1h 55mBOI-DEN
9/2Tue
2 stopsSouthwest
6h 25mDEN-BOI
$212
7/31Thu
nonstopUnited Airlines
1h 56mBOI-DEN
8/5Tue
nonstopUnited Airlines
2h 01mDEN-BOI
$223
9/20Sat
nonstopUnited Airlines
2h 17mGEG-DEN
9/21Sun
nonstopUnited Airlines
2h 23mDEN-GEG
$224

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Recent one-way flight deals

7/17Thu
nonstopAllegiant Air
1h 48mIDA-DEN
$52
8/12Tue
nonstopFrontier
2h 33mGEG-DEN
$59
7/30Wed
nonstopUnited Airlines
2h 20mGEG-DEN
$89
8/13Wed
1 stopAlaska Airlines
4h 52mGEG-DEN
$98
8/4Mon
nonstopUnited Airlines
1h 57mBOI-DEN
$99
8/18Mon
1 stopDelta
5h 45mGEG-DEN
$99
9/8Mon
1 stopAlaska Airlines
16h 53mBOI-DEN
$104
8/28Thu
1 stopDelta
8h 04mBOI-DEN
$109
11/11Tue
2 stopsSouthwest
8h 00mGEG-DEN
$114
10/18Sat
nonstopSouthwest
1h 50mBOI-DEN
$116

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Last minute flights from Idaho to Colorado

Last minute flight, train and bus deals

7/3Thu
nonstopAllegiant Air
1h 48mIDA-DEN
7/6Sun
nonstopAllegiant Air
1h 44mDEN-IDA
$127
7/3Thu
nonstopFrontier
2h 21mGEG-DEN
7/8Tue
nonstopFrontier
2h 21mDEN-GEG
$128
7/4Fri
nonstopUnited Airlines
1h 49mIDA-DEN
7/8Tue
nonstopUnited Airlines
1h 44mDEN-IDA
$304
7/3Thu
multi-stopDelta
3h 23mIDA-DEN
7/6Sun
multi-stopDelta
3h 29mDEN-IDA
$324
7/4Fri
multi-stopDelta
5h 36mJAC-DEN
7/7Mon
multi-stopDelta
4h 54mDEN-JAC
$374
7/3Thu
multi-stopAlaska Airlines
6h 34mSUN-DEN
7/7Mon
multi-stopAlaska Airlines
27h 38mDEN-SUN
$378
7/4Fri
nonstopUnited Airlines
1h 48mJAC-DEN
7/6Sun
nonstopUnited Airlines
1h 33mDEN-JAC
$384
7/3Thu
multi-stopAlaska Airlines
6h 34mSUN-DEN
7/7Mon
multi-stopAlaska Airlines
27h 38mDEN-SUN
$398
7/5Sat
nonstopSouthwest
2h 00mBOI-DEN
7/10Thu
nonstopSouthwest
1h 55mDEN-BOI
$489
7/5Sat
multi-stopSouthwest
6h 00mBOI-DEN
7/10Thu
multi-stopSouthwest
6h 40mDEN-BOI
$510

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Everything you need to know for your flight to Colorado

Cabin class types available on flights to Idaho

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

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