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Idaho

$38+ Cheap flights from Colorado to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Colorado to Idaho

Keep the following information in mind while searching for Colorado to Idaho flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$73
(Kiwi.com)

One-way from

$38
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$267

Good round-trip deal

$133 or less

Good one-way deal

$68 or less
From Colorado to Idaho
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One-way flight from Colorado to Idaho
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Highest demand for flights based on searches. 21% potential increase in price ($81 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Colorado to Idaho.
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Price to beat on a one-way flight from Colorado to Idaho.
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Find flight deals from Colorado to Idaho

Cheapest flights from Colorado to Idaho
Explore the most affordable flight options available from Colorado to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/39:38 amDEN - BOI
Nonstop1h 59mFrontier
dom. 10/512:22 pmBOI - DEN
Nonstop2h 23mFrontier
Deal found 9/10$73
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/29:38 amDEN - BOI
Nonstop1h 59mFrontier
dom. 10/512:22 pmBOI - DEN
Nonstop2h 23mFrontier
Deal found 9/10$75
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/239:48 amDEN - GEG
Nonstop2h 20mFrontier
dom. 10/2611:53 amGEG - DEN
Nonstop2h 26mFrontier
Deal found 9/10$90
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/249:48 amDEN - BOI
Nonstop1h 55mFrontier
dom. 10/2612:28 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 9/11$108
This Orbitz deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/187:02 pmDEN - BOI
1 stop4h 55mMultiple Airlines
jue. 10/2312:28 pmBOI - DEN
Nonstop2h 00mMultiple Airlines
Deal found 9/11$112
This Priceline deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/99:48 amDEN - BOI
Nonstop1h 55mFrontier
dom. 10/1912:28 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 9/9$117
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/249:48 amDEN - BOI
Nonstop1h 55mMultiple Airlines
lun. 10/276:05 pmBOI - DEN
1 stop5h 54mMultiple Airlines
Deal found 9/10$118
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/146:46 pmDEN - BOI
1 stop5h 13mMultiple Airlines
dom. 11/1612:28 pmBOI - DEN
Nonstop2h 00mMultiple Airlines
Deal found 9/10$121
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/99:48 amDEN - GEG
Nonstop2h 20mFrontier
jue. 10/1612:03 pmGEG - DEN
Nonstop2h 16mFrontier
Deal found 9/11$123
This Expedia deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/29:23 pmDEN - BOI
1 stop12h 05mMultiple Airlines
dom. 10/512:22 pmBOI - DEN
Nonstop2h 23mMultiple Airlines
Deal found 9/11$125
This Trip.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/247:02 pmDEN - GEG
1 stop5h 06mMultiple Airlines
dom. 10/2611:53 amGEG - DEN
Nonstop2h 26mMultiple Airlines
Deal found 9/11$126
This Trip.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2811:31 amDEN - BOI
1 stop5h 40mAlaska Airlines
lun. 11/36:05 pmBOI - DEN
1 stop5h 54mAlaska Airlines
Deal found 9/10$130

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
Use the filters below to find and compare flights from Colorado to Idaho that are best for you.

Fly from

Colorado

Fly to

Idaho

Route

Depart

Return

Price

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 10/16

7:45 am-9:42 am

Nonstop1h 57m

Boise Air Term. Gowen Fld

sáb. 10/18

9:30 am-11:35 am

Nonstop2h 05m

$133

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mar. 10/28

9:25 pm-11:20 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

lun. 11/3

2:40 pm-4:30 pm

Nonstop1h 50m

$133

DenverBoise

DEN - BOI

DENBOI

Denver Intl

sáb. 10/4

5:45 am-10:48 am

1 stop5h 03m

Boise Air Term. Gowen Fld

mar. 10/7

5:55 pm-10:25 pm

1 stop4h 30m

$137

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mié. 10/8

6:25 am-1:20 pm

1 stop6h 55m

Boise Air Term. Gowen Fld

mié. 10/15

6:00 am-9:29 am

1 stop3h 29m

$137

DenverBoise

DEN - BOI

DENBOI

Denver Intl

sáb. 10/25

7:02 pm-11:57 pm

1 stop4h 55m

Boise Air Term. Gowen Fld

lun. 10/27

6:05 pm-11:59 pm

1 stop5h 54m

$142

DenverBoise

DEN - BOI

DENBOI

Denver Intl

vie. 11/14

7:00 am-3:12 pm

1 stop8h 12m

Boise Air Term. Gowen Fld

lun. 11/17

6:05 pm-11:59 pm

1 stop5h 54m

$148

DenverBoise

DEN - BOI

DENBOI

Denver Intl

vie. 10/17

7:25 pm-9:24 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

lun. 10/20

7:00 am-8:55 am

Nonstop1h 55m

$149

DenverBoise

DEN - BOI

DENBOI

Denver Intl

vie. 11/14

7:55 am-10:00 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

dom. 11/16

5:40 pm-7:30 pm

Nonstop1h 50m

$149

DenverBoise

DEN - BOI

DENBOI

Denver Intl

vie. 2/20

3:57 pm-5:55 pm

Nonstop1h 58m

Boise Air Term. Gowen Fld

dom. 2/22

5:00 am-7:00 am

Nonstop2h 00m

$149

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

sáb. 10/11

11:15 am-12:36 pm

Nonstop2h 21m

Spokane

lun. 10/13

1:38 pm-4:55 pm

Nonstop2h 17m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Idaho

What is the cheapest month to book a flight from Colorado to Idaho?

Currently, October is the cheapest month in which you can book a flight from Colorado to Idaho (average of $314). Flying from Colorado to Idaho in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to ID?

Find hourly flight availability from Colorado to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Idaho as you normally would.

Weekly flight availability from Colorado to Idaho

Explore weekly flight availability from Colorado to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 11, 2025.

The most flights from USCO to USID are scheduled on a Monday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated septiembre 11, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Colorado to Idaho by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Allegiant Air
7.2
Good
702 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Colorado to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Colorado to Idaho flight route?

    This flight path from Colorado to Idaho was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Colorado to Idaho?

    Airlines like United Airlines, Southwest, and Delta fly from Colorado to Idaho in about 1h 55m. The time it takes to get you to your destination can typically vary by up to 3h 08m. Airlines will cover a distance of 647 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Colorado to Idaho one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $59. Southwest flights start at $59 while deals on Delta start at $69 one-way.

  • Can I find deals for flights from Colorado to Idaho that include hotel bookings?

    Yes. In addition to deals on Colorado to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Idaho.

  • Can I find deals for business class flights from Colorado to Idaho?

    Yes. Cheapflights offers flight deals from Colorado to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Colorado to Idaho (average of $314). Flying from Colorado to Idaho in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Colorado to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Colorado to Idaho

Discover the top 6 airlines that operate flights from Colorado to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$44Average$88FlexibilityNo cancel feeOn-time88%
FrontierCheapest$62Average$133FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$392FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$168Average$235FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$197Average$369FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$198Average$395FlexibilityNo cancel feeOn-time69%

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