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$62+ Cheap flights from Idaho to Colorado

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.
BOI — DEN
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from Idaho to Colorado

Keep the following information in mind while searching for Idaho to Colorado 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
(Frontier)

One-way from

$62
(CheapOair)

Popular in

March

Cheapest in

February

Average price

$347

Good round-trip deal

$351 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Denver Intl flights.
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From Idaho to Colorado
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One-way flight from Idaho to Colorado
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Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 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 Idaho to Colorado.
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Price to beat on a one-way flight from Idaho to Colorado.
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Find flight deals from Idaho to Colorado

Cheapest flights from Idaho to Colorado
Explore the most affordable flight options available from Idaho to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2211:49 amGEG - DEN
Nonstop2h 18mFrontier
Sun 5/259:42 amDEN - GEG
Nonstop2h 22mFrontier
Deal found 3/30$179
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/264:15 pmIDA - DEN
Nonstop1h 42mUnited Airlines
Tue 4/297:46 amDEN - IDA
Nonstop1h 46mUnited Airlines
Deal found 3/31$189
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.
Tue 6/2412:36 pmBOI - DEN
Nonstop1h 58mMultiple Airlines
Sat 6/286:00 amDEN - BOI
1 stop6h 20mMultiple Airlines
Deal found 3/30$192
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:30 amBOI - DEN
Nonstop1h 57mUnited Airlines
Wed 6/47:45 amDEN - BOI
Nonstop2h 01mUnited Airlines
Deal found 3/30$194
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.
Mon 5/265:05 amBOI - DEN
Nonstop1h 55mSouthwest
Tue 5/279:35 pmDEN - BOI
Nonstop1h 55mSouthwest
Deal found 3/30$197
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.
Mon 6/98:34 pmBOI - DEN
1 stop14h 06mAlaska Airlines
Tue 6/107:05 pmDEN - BOI
1 stop4h 54mAlaska Airlines
Deal found 3/31$203
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 6/65:06 amGEG - DEN
1 stop4h 34mMultiple Airlines
Sun 6/89:42 amDEN - GEG
Nonstop2h 21mMultiple Airlines
Deal found 3/30$203
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.
Tue 7/296:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Wed 8/66:00 amDEN - GEG
1 stop7h 28mAlaska Airlines
Deal found 3/30$206
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 5/293:39 pmBOI - DEN
1 stop8h 15mDelta
Wed 6/45:30 amDEN - BOI
1 stop4h 36mDelta
Deal found 3/30$214
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 7/241:00 pmGEG - DEN
1 stop7h 41mDelta
Tue 8/1212:20 pmDEN - GEG
1 stop5h 39mDelta
Deal found 3/30$227
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/263:30 pmIDA - DEN
1 stop4h 24mDelta
Tue 4/296:05 pmDEN - IDA
1 stop4h 51mDelta
Deal found 3/31$229
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/254:20 pmBOI - DEN
1 stop7h 39mHawaiian Airlines
Mon 4/286:37 pmDEN - BOI
1 stop5h 22mHawaiian Airlines
Deal found 3/30$231

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho to Colorado 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 Idaho to Colorado that are best for you.

Fly from

Idaho

Fly to

Colorado

Route

Depart

Return

Price

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 5/22

11:49 am-3:07 pm

Nonstop2h 18m

Denver Intl

Sun 5/25

9:42 am-11:04 am

Nonstop2h 22m

$179

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 4/26

4:15 pm-5:57 pm

Nonstop1h 42m

Denver Intl

Tue 4/29

7:46 am-9:32 am

Nonstop1h 46m

$189

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 6/24

12:36 pm-2:34 pm

Nonstop1h 58m

Denver Intl

Sat 6/28

6:00 am-12:20 pm

1 stop6h 20m

$192

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 5/29

6:30 am-8:27 am

Nonstop1h 57m

Denver Intl

Wed 6/4

7:45 am-9:46 am

Nonstop2h 01m

$194

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 5/26

5:05 am-7:00 am

Nonstop1h 55m

Denver Intl

Tue 5/27

9:35 pm-11:30 pm

Nonstop1h 55m

$197

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 6/9

8:34 pm-10:40 am

1 stop14h 06m

Denver Intl

Tue 6/10

7:05 pm-11:59 pm

1 stop4h 54m

$203

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Fri 6/6

5:06 am-10:40 am

1 stop4h 34m

Denver Intl

Sun 6/8

9:42 am-11:03 am

Nonstop2h 21m

$203

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 5/29

3:39 pm-11:54 pm

1 stop8h 15m

Denver Intl

Wed 6/4

5:30 am-10:06 am

1 stop4h 36m

$214

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 4/26

3:30 pm-7:54 pm

1 stop4h 24m

Denver Intl

Tue 4/29

6:05 pm-10:56 pm

1 stop4h 51m

$229

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 4/25

4:20 pm-11:59 pm

1 stop7h 39m

Denver Intl

Mon 4/28

6:37 pm-11:59 pm

1 stop5h 22m

$231

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 Idaho to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Idaho 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 Idaho to Colorado

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

Currently, October is the cheapest month in which you can book a flight from Idaho to Colorado (average of $197). Flying from Idaho to Colorado in March is currently the most expensive (average of $278). 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 ID to CO?

Find hourly flight availability from Idaho to Colorado. 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 Idaho to Colorado as you normally would.

Weekly flight availability from Idaho to Colorado

Explore weekly flight availability from Idaho to Colorado. 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 USID to USCO 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 Colorado by month

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

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

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

If weather is an important factor for your trip to Colorado, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated March 31, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Idaho to Colorado to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

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

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

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

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

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

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

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

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

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

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

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 Idaho to Colorado. 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 Idaho to Colorado flight route?

    Flights from Idaho to Colorado have been viewed 91 times in the past calendar month.

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

    The cheapest airlines for a one-way flight from Idaho to Colorado are Frontier ($62), Allegiant Air ($68), and United Airlines ($89).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to Colorado 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 Idaho to Colorado?

    Currently, October is the cheapest month in which you can book a flight from Idaho to Colorado (average of $197). Flying from Idaho to Colorado in March is currently the most expensive (average of $278). 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 Idaho to Colorado

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

Discover the top 6 airlines that operate flights from Idaho to Colorado. 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
FrontierCheapest$58Average$138FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$179Average$448FlexibilityNo cancel feeOn-time69%
DeltaCheapest$183Average$413FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$191Average$387FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$215Average$312FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$298Average$426FlexibilityNo cancel feeOn-time71%
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