COS - BOI

$121 Find Cheap Flights from Colorado Springs to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Colorado Springs to Boise departing on 10/15. 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 Boise

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

Cheap Flights from Colorado Springs to Boise (COS-BOI)

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

Fri, Oct 24 - Sun, Oct 26
Southwest Logo
6:15 pm - 12:20 amCOS-BOI
6h 05m1 stop
Southwest Logo
5:45 pm - 12:10 amBOI-COS
6h 25m1 stop
$284Southwest
Find Deal
Wed, Oct 8 - Wed, Oct 8
Southwest Logo
6:15 am - 10:45 amCOS-BOI
4h 30m1 stop
Southwest Logo
4:15 pm - 10:10 pmBOI-COS
5h 55m1 stop
$294Southwest
Find Deal
Fri, Oct 24 - Sun, Oct 26
United Airlines Logo
6:00 am - 9:42 amCOS-BOI
3h 42m1 stop
United Airlines Logo
5:00 am - 8:41 amBOI-COS
3h 41m1 stop
$354United Airlines
Find Deal
Sat, Sep 27 - Tue, Sep 30
United Airlines Logo
8:00 am - 1:33 pmCOS-BOI
5h 33m1 stop
United Airlines Logo
5:00 am - 10:40 amBOI-COS
5h 40m1 stop
$371United Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 10
United Airlines Logo
6:20 pm - 10:30 pmCOS-BOI
4h 10m1 stop
United Airlines Logo
5:39 pm - 9:54 pmBOI-COS
4h 15m1 stop
$391United Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 3
Southwest Logo
5:35 am - 9:45 amCOS-BOI
4h 10m1 stop
Southwest Logo
5:40 pm - 11:20 pmBOI-COS
5h 40m1 stop
$393Southwest
Find Deal
Sat, Sep 27 - Tue, Sep 30
American Airlines Logo
6:02 am - 12:48 pmCOS-BOI
6h 46m1 stop
American Airlines Logo
1:57 pm - 10:08 pmBOI-COS
8h 11m2 stops
$440American Airlines
Find Deal
Fri, Oct 24 - Sun, Oct 26
Delta Logo
8:09 am - 6:51 pmCOS-BOI
10h 42m2 stops
Delta Logo
5:25 am - 5:09 pmBOI-COS
11h 44m2 stops
$629Delta
Find Deal
Sat, Sep 27 - Tue, Sep 30
American Airlines Logo
11:01 am - 8:02 pmCOS-BOI
9h 01m2 stops
American Airlines Logo
1:57 pm - 10:08 pmBOI-COS
8h 11m2 stops
$670American Airlines
Find Deal
Sun, Nov 30 - Mon, Dec 1
Delta Logo
6:02 pm - 12:35 amCOS-BOI
6h 33m1 stop
Delta Logo
5:58 pm - 10:23 pmBOI-COS
4h 25m1 stop
$739Delta
Find Deal

Everything you should know

Top airlines
Southwest
Cheapest • from $284 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
May
Cheapest • 32% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$284
Overall average: $321
Southwest
Fri 10/24Sun 10/26
COS - BOI • 1 stop
Cheapest one-way
$121
Southwest
Wed 10/15
COS - BOI • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boise!
Booking Insights

KAYAK's insights & trends for Colorado Springs to Boise flights

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

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

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

When flying from Colorado Springs to Boise, you should consider leaving on a Tuesday and avoid Saturdays if you are looking for the best rates. For your return to Colorado Springs, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Colorado Springs to Boise, 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 Colorado Springs to Boise is May, where tickets cost $287 (return) on average. On the other hand, the most expensive months are February and January, where the average cost of round-trip tickets is $509 and $503 respectively.

Good to know

Low seasonSeptember
Cheapest flight$121
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from Colorado Springs to Boise

When to book flights from Colorado Springs to Boise

Are your dates flexible? Find out the best times to travel from Colorado Springs to Boise based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Colorado Springs to Boise

  • What is the cheapest flight from Colorado Springs to Boise?

    In the last 3 days, the lowest price for a flight from Colorado Springs to Boise was $121 for a one-way ticket and $284 for a round-trip.

  • Do I need a passport to fly between Colorado Springs and Boise?

    No

  • Which airports will I be using when flying from Colorado Springs to Boise?

    On your way to Boise, you’ll fly out from Colorado Springs. You’ll be landing at Boise Air Term. Gowen Fld.

  • Which aircraft models fly most regularly from Colorado Springs to Boise?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Colorado Springs to Boise?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Colorado Springs and Boise, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Colorado Springs to Boise, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Colorado Springs to Boise are Southwest and United Airlines. With an average price for the route of $451 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $398 and an overall rating of 7.4.

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

    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 Springs to Boise.

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

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

    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 to Boise with an airline and back to Colorado Springs with another airline. Booking your flights between Colorado Springs and BOI can sometimes prove cheaper using this method.

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

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

Reviews of the top airlines flying from Colorado Springs to Boise

 
See real verified KAYAK customer reviews for airlines flying from Colorado Springs to Boise. 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 Colorado Springs to Boise? 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
7.5Entertainment
8.6Crew
8.1Boarding
7.0Food
8.0Comfort
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.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

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 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

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

Information on your arrival and departure airports

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