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Idaho

$69+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(CheapOair)

One-way from

$69
(Frontier)

Popular in

December

Cheapest in

July

Average price

$297

Good round-trip deal

$237 or less

Good one-way deal

$138 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 ($56 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 March 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 March 31, 2025.

This CheapOair deal was found by Cheapflights users on 3/30. 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 5/229:42 amDEN - GEG
Nonstop2h 22mFrontier
Sun 5/2511:49 amGEG - DEN
Nonstop2h 18mFrontier
Deal found 3/30$179
This Southwest deal was found by Cheapflights users on 3/30. 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.
Fri 5/309:40 pmDEN - BOI
Nonstop1h 55mSouthwest
Tue 6/34:20 pmBOI - DEN
Nonstop1h 55mSouthwest
Deal found 3/30$197
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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.
Thu 5/297:05 pmDEN - BOI
1 stop4h 54mAlaska Airlines
Tue 6/38:34 pmBOI - DEN
1 stop14h 06mAlaska Airlines
Deal found 3/30$203
This Delta deal was found by Cheapflights users on 3/30. 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 7/246:30 pmDEN - GEG
1 stop6h 03mDelta
Tue 7/291:00 pmGEG - DEN
1 stop7h 41mDelta
Deal found 3/30$207
This Hawaiian Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 5/17:00 amDEN - BOI
1 stop6h 47mHawaiian Airlines
Mon 5/54:20 pmBOI - DEN
1 stop7h 39mHawaiian Airlines
Deal found 3/31$210
This United deal was found by Cheapflights users on 3/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/238:00 amDEN - WYS
Nonstop1h 51mUnited Airlines
Tue 5/2710:30 amWYS - DEN
Nonstop1h 43mUnited Airlines
Deal found 3/30$210
This United Airlines deal was found by Cheapflights users on 3/29. 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 4/307:45 amDEN - BOI
Nonstop2h 04mUnited Airlines
Tue 5/65:00 amBOI - DEN
Nonstop2h 05mUnited Airlines
Deal found 3/29$211
This Expedia deal was found by Cheapflights users on 3/30. 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.
Fri 5/307:05 pmDEN - BOI
1 stop4h 54mMultiple Airlines
Tue 6/312:36 pmBOI - DEN
Nonstop1h 58mMultiple Airlines
Deal found 3/30$212
This Delta deal was found by Cheapflights users on 3/30. 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 6/125:30 amDEN - BOI
1 stop4h 00mDelta
Tue 6/173:43 pmBOI - DEN
1 stop8h 06mDelta
Deal found 3/30$214
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 7/246:00 amDEN - GEG
1 stop7h 28mAlaska Airlines
Tue 7/296:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Deal found 3/31$216
This Delta deal was found by Cheapflights users on 3/30. 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 6/145:30 amDEN - IDA
1 stop5h 09mDelta
Sat 6/216:00 amIDA - DEN
1 stop6h 01mDelta
Deal found 3/30$229
This CheapOair deal was found by Cheapflights users on 3/30. 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 5/229:54 amDEN - BOI
Nonstop1h 57mFrontier
Tue 5/2712:36 pmBOI - DEN
Nonstop1h 59mFrontier
Deal found 3/30$238

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 March 31, 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

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 5/22

9:42 am-11:04 am

Nonstop2h 22m

Spokane

Sun 5/25

11:49 am-3:07 pm

Nonstop2h 18m

$179

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Fri 5/30

9:40 pm-11:35 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

Tue 6/3

4:20 pm-6:15 pm

Nonstop1h 55m

$197

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 5/29

7:05 pm-11:59 pm

1 stop4h 54m

Boise Air Term. Gowen Fld

Tue 6/3

8:34 pm-10:40 am

1 stop14h 06m

$203

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 7/24

6:30 pm-11:33 pm

1 stop6h 03m

Spokane

Tue 7/29

1:00 pm-9:41 pm

1 stop7h 41m

$207

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 5/1

7:00 am-1:47 pm

1 stop6h 47m

Boise Air Term. Gowen Fld

Mon 5/5

4:20 pm-11:59 pm

1 stop7h 39m

$210

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

Fri 5/23

8:00 am-9:51 am

Nonstop1h 51m

West Yellowstone

Tue 5/27

10:30 am-12:13 pm

Nonstop1h 43m

$210

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 4/30

7:45 am-9:49 am

Nonstop2h 04m

Boise Air Term. Gowen Fld

Tue 5/6

5:00 am-7:05 am

Nonstop2h 05m

$211

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Fri 5/30

7:05 pm-11:59 pm

1 stop4h 54m

Boise Air Term. Gowen Fld

Tue 6/3

12:36 pm-2:34 pm

Nonstop1h 58m

$212

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 6/12

5:30 am-9:30 am

1 stop4h 00m

Boise Air Term. Gowen Fld

Tue 6/17

3:43 pm-11:49 pm

1 stop8h 06m

$214

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 7/24

6:00 am-12:28 pm

1 stop7h 28m

Spokane

Tue 7/29

6:07 pm-11:59 pm

1 stop4h 52m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 March 31, 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 March 31, 2025.

The most flights from USCO to USID are scheduled on a Monday (16 on average). You will have fewer flight options on Tuesday, 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 March 31, 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
9,818 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $69. Hawaiian Airlines flights start at $88 while deals on United Airlines start at $89 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

Browse thousands of different options on Cheapflights for your next trip

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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 5 airlines flying from Colorado to Idaho

Discover the top 5 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$169Average$393FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$392FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$182Average$407FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$197Average$389FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$298Average$423FlexibilityNo cancel feeOn-time71%
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