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$46+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$84
(Booking.com)

One-way from

$46
(Booking.com)

Popular in

November

Cheapest in

May

Average price

$300

Good round-trip deal

$332 or less

Good one-way deal

$180 or less
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. 6% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/35:49 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Thu 7/243:20 pmDEN - IDA
Nonstop1h 44mAllegiant Air
Deal found 6/11$84
This Frontier deal was found by Cheapflights users on 6/12. 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 7/1711:58 amGEG - DEN
Nonstop2h 19mFrontier
Sun 7/209:42 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 6/12$139
This Frontier deal was found by Cheapflights users on 6/12. 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 8/2812:27 pmBOI - DEN
Nonstop2h 00mFrontier
Sun 8/319:36 amDEN - BOI
Nonstop1h 56mFrontier
Deal found 6/12$149
This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 7/305:10 pmGEG - DEN
1 stop4h 01mDelta
Tue 8/55:30 amDEN - GEG
1 stop4h 23mDelta
Deal found 6/12$177
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/237:00 amJAC - DEN
Nonstop1h 38mUnited Airlines
Sat 8/24:25 pmDEN - JAC
Nonstop1h 30mUnited Airlines
Deal found 6/11$189
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/156:03 pmIDA - DEN
Nonstop1h 42mUnited Airlines
Mon 8/189:05 pmDEN - IDA
Nonstop1h 46mUnited Airlines
Deal found 6/10$189
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/226:52 pmJAC - DEN
1 stop3h 56mDelta
Sat 8/236:25 pmDEN - JAC
1 stop3h 04mDelta
Deal found 6/10$209
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/137:00 amSUN - DEN
Nonstop2h 00mUnited Airlines
Sun 9/1411:31 amDEN - SUN
Nonstop2h 01mUnited Airlines
Deal found 6/11$209
This Delta deal was found by Cheapflights users on 6/12. 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 8/16:00 amIDA - DEN
1 stop3h 24mDelta
Sat 8/97:10 amDEN - IDA
1 stop3h 24mDelta
Deal found 6/12$209
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:35 amBOI - DEN
1 stop5h 35mAlaska Airlines
Mon 10/67:02 pmDEN - BOI
1 stop4h 55mAlaska Airlines
Deal found 6/11$210
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/54:05 pmBOI - DEN
Nonstop1h 55mSouthwest
Thu 8/78:15 amDEN - BOI
Nonstop1h 55mSouthwest
Deal found 6/11$211
This Orbitz deal was found by Cheapflights users on 6/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1011:58 amGEG - DEN
Nonstop2h 19mMultiple Airlines
Tue 7/1511:40 amDEN - GEG
1 stop7h 07mMultiple Airlines
Deal found 6/10$212

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 June 12, 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

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 7/3

5:49 pm-7:37 pm

Nonstop1h 48m

Denver Intl

Thu 7/24

3:20 pm-5:04 pm

Nonstop1h 44m

$84

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 7/17

11:58 am-3:17 pm

Nonstop2h 19m

Denver Intl

Sun 7/20

9:42 am-11:03 am

Nonstop2h 21m

$139

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 8/28

12:27 pm-2:27 pm

Nonstop2h 00m

Denver Intl

Sun 8/31

9:36 am-11:32 am

Nonstop1h 56m

$149

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 7/30

5:10 pm-10:11 pm

1 stop4h 01m

Denver Intl

Tue 8/5

5:30 am-8:53 am

1 stop4h 23m

$177

JacksonDenver

JAC - DEN

JACDEN

Jackson Hole

Wed 7/23

7:00 am-8:38 am

Nonstop1h 38m

Denver Intl

Sat 8/2

4:25 pm-5:55 pm

Nonstop1h 30m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 8/15

6:03 pm-7:45 pm

Nonstop1h 42m

Denver Intl

Mon 8/18

9:05 pm-10:51 pm

Nonstop1h 46m

$189

JacksonDenver

JAC - DEN

JACDEN

Jackson Hole

Fri 8/22

6:52 pm-10:48 pm

1 stop3h 56m

Denver Intl

Sat 8/23

6:25 pm-9:29 pm

1 stop3h 04m

$209

HaileyDenver

SUN - DEN

SUNDEN

Hailey Sun Valley-Friedman

Sat 9/13

7:00 am-9:00 am

Nonstop2h 00m

Denver Intl

Sun 9/14

11:31 am-1:32 pm

Nonstop2h 01m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 8/1

6:00 am-9:24 am

1 stop3h 24m

Denver Intl

Sat 8/9

12:50 pm-6:11 pm

1 stop5h 21m

$209

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 9/9

4:34 pm-9:47 pm

1 stop5h 13m

Denver Intl

Mon 9/15

6:17 pm-11:59 pm

1 stop5h 42m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 June 12, 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 June 12, 2025.

The most flights from USID to USCO are scheduled on a Monday (17 on average). You will have fewer flight options on Saturday, 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 June 12, 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
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 98 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 Allegiant Air ($46), Frontier ($79), and Delta ($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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$54Average$90FlexibilityNo cancel feeOn-time88%
FrontierCheapest$58Average$141FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$400FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$191Average$387FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$205Average$319FlexibilityNo cancel feeOn-time63%

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