$40 Find Cheap Flights from Boise to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Colorado departing on 3/26. 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 Colorado

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

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denvernonstop$92
Montrose
Montrose1 stop$276
Denver
Denvernonstop$92
Montrose
Montrose1 stop$276

Book Cheap Boise to Colorado Plane Tickets

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

Thu, Apr 9 - Sun, Apr 12
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$92Frontier
Thu, May 14 - Sun, May 17
Frontier Logo
11:53 am - 1:56 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$93Frontier
Thu, Apr 9 - Sun, Apr 12
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$94Frontier
Sun, Mar 15 - Thu, Mar 19
Frontier Logo
12:15 pm - 2:15 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:10 am - 11:20 am
DEN
-
BOI
2h 10mnonstop
$103Frontier
Wed, Mar 18 - Tue, Mar 31
Delta Logo
9:00 am - 10:05 pm
BOI
-
COS
13h 05m
2 stops
Delta Logo
12:10 pm - 10:04 pm
COS
-
BOI
9h 54m
2 stops
$214Delta
Tue, Apr 7 - Tue, Apr 14
Delta Logo
6:00 am - 11:24 am
BOI
-
COS
5h 24m
1 stop
Delta Logo
11:55 am - 9:24 pm
COS
-
BOI
9h 29m
2 stops
$250Delta
Tue, Mar 17 - Wed, Apr 1
United Airlines Logo
5:00 am - 8:49 am
BOI
-
COS
3h 49m
1 stop
United Airlines Logo
6:00 am - 9:54 am
COS
-
BOI
3h 54m
1 stop
$269United Airlines
Thu, Mar 26 - Mon, Mar 30
United Airlines Logo
6:15 am - 12:32 pm
BOI
-
MTJ
6h 17m
1 stop
United Airlines Logo
3:37 pm - 9:22 pm
MTJ
-
BOI
5h 45m
1 stop
$276United Airlines
Tue, Apr 7 - Tue, Apr 14
Southwest Logo
4:05 pm - 8:45 pm
BOI
-
COS
4h 40m
1 stop
Southwest Logo
6:00 am - 12:30 pm
COS
-
BOI
6h 30m
1 stop
$295Southwest
Wed, Apr 8 - Sun, Apr 12
Southwest Logo
6:40 am - 3:30 pm
BOI
-
COS
8h 50m
2 stops
Southwest Logo
6:20 am - 10:25 am
COS
-
BOI
4h 05m
1 stop
$300Southwest
Booking Insights

KAYAK's insights & trends for Boise to Colorado flights

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

What is the cheapest Boise to Colorado flight route?

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

The cheapest ticket to Colorado from Boise found in the last 72 hours was to Denver, at $141 round-trip. The most popular route is from Boise (BOI) to Denver (DEN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $141.

Can I save money by flying with a layover from Boise to Colorado?

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 $277, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boise to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Colorado, 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 Boise to Colorado is October, when tickets cost $187 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $317 and $288 respectively.

What’s the cheapest day of the week to fly from Boise to Colorado?

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

If you are looking for a flight deal from Boise to Colorado, look for departures on Thursdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Colorado, Thursday is the cheapest day to fly and Monday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Colorado, 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 Boise to Colorado, you should book around 3 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$39
Best time to beat the crowds but there is an average 47% increase in price.
Most popular time to fly with an average 24% increase in price.
Flight from Boise to Denver

FAQs - booking Colorado flights

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

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

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

    The cheapest time of day to fly to Colorado is generally in the evening, when round-trip flights cost $434 on average. Morning departures are around 6% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $469.

Top tips for finding cheap flights to Colorado

  • Looking for a cheap flight? 25% of our users found tickets from Boise to the following destinations at these prices or less: Denver $172 one-way - $354 round-trip

Reviews of the top 5 airlines serving from Boise to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Boise to Colorado. 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 Boise 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
Alaska AirlinesOverall score based on 11948 reviews
7.0Entertainment
8.1Boarding
7.8Comfort
8.5Crew
7.1Food
Airline reviews

had to be rerouted due to a medical emergency onboard. Alaska crew treated the patient with utmost respect and continued to keep the passengers updated the entire way through, which I appreciate. But it took 4 hours from landing until we were able to be airborne again, causing us to not get into SFO until ~2 am. I understand it was a tough situation for everyone, but that was an indecent wait.

2.0 MediocreAnonymous, Feb 2026
SFO - RDM
Read more Alaska Airlines reviews

had to be rerouted due to a medical emergency onboard. Alaska crew treated the patient with utmost respect and continued to keep the passengers updated the entire way through, which I appreciate. But it took 4 hours from landing until we were able to be airborne again, causing us to not get into SFO until ~2 am. I understand it was a tough situation for everyone, but that was an indecent wait.

The flight was too short. No snacks or drinks offered.

I like flying Alaska Airlines. I think the staff are happy, the plane is comfortable, the entertainment reasonable, the food acceptable.

Liked the attention and speed when getting wheelchair..........Was assured by phone that my needs would be taken care of and they were with my name.

Crew very courteous. Boarding was great. Slow to get baggage at Denver.

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

It was ok. First time flying with them to Boise Won’t do again

Our late returning flight was annoying. The plane was small, but it made boarding and disembarking quicker. I do wish they offered a gluten free snack.

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Never got on it. Was re-routed through Detroit and am still in airports 12 hours later waiting for my connecting plane to arrive.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

Very Very late. Subsequent flights left an hour before ours

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

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

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

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.

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

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Everything you need to know for your flight from Boise to Colorado

Information on your arrival and departure airports