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Idaho

$56+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$95
(Kiwi.com)

One-way from

$56
(Frontier)

Popular in

December

Cheapest in

March

Average price

$304

Good round-trip deal

$197 or less

Good one-way deal

$125 or less
Provider with most accurate pricing for Denver Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Boise Air Term. Gowen Fld flights.
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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. 15% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Sun 6/13:24 pmDEN - IDA
Nonstop1h 42mAllegiant Air
Thu 6/55:52 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Deal found 4/22$95
This Frontier deal was found by Cheapflights users on 4/21. 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.
Thu 7/179:42 amDEN - GEG
Nonstop2h 21mFrontier
Tue 7/2911:48 amGEG - DEN
Nonstop2h 19mFrontier
Deal found 4/21$155
This CheapOair deal was found by Cheapflights users on 4/20. 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.
Thu 6/59:50 amDEN - BOI
Nonstop1h 57mFrontier
Sun 6/812:36 pmBOI - DEN
Nonstop1h 58mFrontier
Deal found 4/20$167
This Expedia deal was found by Cheapflights users on 4/21. 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.
Sat 5/172:58 pmDEN - BOI
1 stop6h 18mMultiple Airlines
Tue 5/202:27 pmBOI - DEN
Nonstop1h 59mMultiple Airlines
Deal found 4/21$172
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/137:00 amDEN - BOI
1 stop6h 47mAlaska Airlines
Tue 5/204:35 pmBOI - DEN
1 stop5h 03mAlaska Airlines
Deal found 4/22$199
This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/71:40 pmDEN - IDA
Nonstop1h 45mUnited Airlines
Sun 5/117:00 amIDA - DEN
Nonstop1h 57mUnited Airlines
Deal found 4/22$199
This Southwest deal was found by Cheapflights users on 4/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/248:45 pmDEN - BOI
Nonstop1h 55mSouthwest
Mon 5/265:05 amBOI - DEN
Nonstop1h 55mSouthwest
Deal found 4/21$200
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/56:45 pmDEN - GEG
1 stop6h 20mDelta
Tue 6/101:00 pmGEG - DEN
1 stop5h 53mDelta
Deal found 4/21$207
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/245:30 amDEN - BOI
1 stop6h 24mDelta
Sun 5/255:40 pmBOI - DEN
1 stop4h 50mDelta
Deal found 4/22$209
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:25 pmDEN - IDA
1 stop4h 26mDelta
Mon 6/96:52 pmIDA - DEN
1 stop3h 43mDelta
Deal found 4/22$209
This Hawaiian Airlines deal was found by Cheapflights users on 4/21. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/248:00 amDEN - BOI
1 stop7h 04mHawaiian Airlines
Tue 7/225:43 pmBOI - DEN
1 stop6h 16mHawaiian Airlines
Deal found 4/21$210
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/237:05 amDEN - WYS
1 stop3h 35mDelta
Tue 5/273:15 pmWYS - DEN
1 stop4h 15mDelta
Deal found 4/22$210

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 April 22, 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

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Sun 6/1

3:24 pm-5:06 pm

Nonstop1h 42m

Idaho Falls Fanning Field

Thu 6/5

5:52 pm-7:40 pm

Nonstop1h 48m

$95

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 7/17

9:42 am-11:03 am

Nonstop2h 21m

Spokane

Tue 7/29

11:48 am-3:07 pm

Nonstop2h 19m

$155

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 6/5

9:50 am-11:47 am

Nonstop1h 57m

Boise Air Term. Gowen Fld

Sun 6/8

12:36 pm-2:34 pm

Nonstop1h 58m

$167

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 5/17

2:58 pm-9:16 pm

1 stop6h 18m

Boise Air Term. Gowen Fld

Tue 5/20

2:27 pm-4:26 pm

Nonstop1h 59m

$172

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Tue 5/13

7:00 am-1:47 pm

1 stop6h 47m

Boise Air Term. Gowen Fld

Tue 5/20

4:35 pm-9:38 pm

1 stop5h 03m

$199

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 5/7

1:40 pm-3:25 pm

Nonstop1h 45m

Idaho Falls Fanning Field

Sun 5/11

7:00 am-8:57 am

Nonstop1h 57m

$199

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 5/24

8:45 pm-10:40 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

Mon 5/26

5:05 am-7:00 am

Nonstop1h 55m

$200

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 6/5

6:45 pm-12:05 am

1 stop6h 20m

Spokane

Tue 6/10

1:00 pm-7:53 pm

1 stop5h 53m

$207

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 5/24

5:30 am-11:54 am

1 stop6h 24m

Boise Air Term. Gowen Fld

Sun 5/25

5:40 pm-10:30 pm

1 stop4h 50m

$209

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 6/6

6:25 pm-10:51 pm

1 stop4h 26m

Idaho Falls Fanning Field

Sun 6/8

6:00 am-9:23 am

1 stop3h 23m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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 $419). 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 April 22, 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 April 22, 2025.

The most flights from USCO to USID are scheduled on a Monday (16 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 April 22, 2025.
To help decide which airline to fly from Colorado to Idaho, see what other customers have to say about Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,906 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,906 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,392 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,683 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $56. Hawaiian Airlines flights start at $94 while deals on United Airlines start at $95 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 $419). 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 7 airlines flying from Colorado to Idaho

Discover the top 7 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$18Average$84FlexibilityNo cancel feeOn-time88%
FrontierCheapest$58Average$130FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$400FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$168Average$318FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$179Average$414FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$381FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$298Average$414FlexibilityNo cancel feeOn-time71%

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