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$26+ 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 12/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:41 pmBOI - DEN
1 stop10h 23mMultiple Airlines
Sun 12/79:42 amDEN - BOI
Nonstop2h 07mMultiple Airlines
Deal found 10/30$119
This Priceline deal was found by Cheapflights users on 10/28. 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.
Thu 12/412:08 pmGEG - DEN
Nonstop2h 42mFrontier
Sun 12/79:42 amDEN - GEG
Nonstop2h 31mFrontier
Deal found 10/28$122
This Expedia deal was found by Cheapflights users on 10/30. 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.
Thu 12/45:59 pmBOI - DEN
1 stop6h 00mMultiple Airlines
Sun 12/79:42 amDEN - BOI
Nonstop2h 07mMultiple Airlines
Deal found 10/30$126
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:17 pmBOI - DEN
1 stop11h 38mMultiple Airlines
Sun 12/149:42 amDEN - BOI
Nonstop2h 07mMultiple Airlines
Deal found 10/29$137
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:38 pmBOI - DEN
Nonstop2h 01mFrontier
Sat 12/279:52 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 10/29$147
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:41 pmBOI - DEN
2 stops16h 08mMultiple Airlines
Sat 12/209:52 amDEN - BOI
Nonstop2h 07mMultiple Airlines
Deal found 10/29$148
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:02 pmGEG - DEN
Nonstop2h 42mFrontier
Sat 1/39:36 amDEN - GEG
Nonstop2h 31mFrontier
Deal found 10/29$148
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:02 pmGEG - DEN
Nonstop2h 42mFrontier
Tue 12/239:36 amDEN - GEG
Nonstop2h 31mFrontier
Deal found 10/30$152
This Orbitz deal was found by Cheapflights users on 10/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:44 pmBOI - DEN
Nonstop2h 01mMultiple Airlines
Mon 12/156:59 pmDEN - BOI
1 stop17h 43mMultiple Airlines
Deal found 10/29$154
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Fri 11/2112:48 pmBOI - DEN
Nonstop2h 04mFrontier
Mon 11/245:55 pmDEN - BOI
Nonstop2h 04mFrontier
Deal found 10/28$157
This Frontier deal was found by Cheapflights users on 10/30. 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.
Fri 11/2112:48 pmBOI - DEN
Nonstop2h 04mFrontier
Sun 11/239:44 amDEN - BOI
Nonstop2h 04mFrontier
Deal found 10/30$158
This Travelocity deal was found by Cheapflights users on 10/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:01 pmGEG - DEN
1 stop6h 19mMultiple Airlines
Tue 12/93:42 pmDEN - GEG
1 stop6h 46mMultiple Airlines
Deal found 10/28$158

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$119
(Kiwi.com)

One-way from

$26
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$221

Good round-trip deal

$315 or less

Good one-way deal

$167 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Denver Intl flights.
Search Deals
From Idaho to Colorado
Search Deals
One-way flight from Idaho to Colorado
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Idaho to Colorado.
Search Deals
Price to beat on a one-way flight from Idaho to Colorado.
Search Deals

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 October 30, 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

Sun 1/11

5:15 am-11:57 am

1 stop5h 42m

Denver Intl

Thu 1/15

6:29 am-12:37 pm

1 stop7h 08m

$137

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 12/11

7:35 am-3:13 pm

1 stop7h 38m

Denver Intl

Sun 12/14

9:42 am-11:49 am

Nonstop2h 07m

$166

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Tue 2/24

7:00 am-6:33 pm

1 stop10h 33m

Denver Intl

Wed 2/25

7:04 pm-11:37 pm

1 stop5h 33m

$187

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 1/8

12:10 pm-3:25 pm

Nonstop2h 15m

Denver Intl

Mon 1/12

8:20 pm-9:45 pm

Nonstop2h 25m

$197

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 12/11

3:54 pm-12:24 am

1 stop8h 30m

Denver Intl

Sun 12/14

6:22 pm-12:42 am

1 stop6h 20m

$197

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 1/5

9:00 am-6:15 pm

1 stop9h 15m

Denver Intl

Wed 1/7

7:00 am-12:51 pm

1 stop5h 51m

$198

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 11/26

2:45 pm-4:35 pm

Nonstop1h 50m

Denver Intl

Sat 11/29

8:01 am-9:48 am

Nonstop1h 47m

$204

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 12/20

5:00 am-7:03 am

Nonstop2h 03m

Denver Intl

Sun 12/28

8:00 am-9:58 am

Nonstop1h 58m

$204

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sun 12/21

5:00 am-7:03 am

Nonstop2h 03m

Denver Intl

Sun 12/28

8:00 am-9:58 am

Nonstop1h 58m

$204

SpokaneGrand Junction

GEG - GJT

GEGGJT

Spokane

Thu 11/13

5:10 am-12:32 pm

1 stop6h 22m

Grand Junction Regnl

Mon 11/17

7:00 am-12:45 pm

1 stop6h 45m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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, September is the cheapest month in which you can book a flight from Idaho to Colorado (average of $58). Flying from Idaho to Colorado in February is currently the most expensive (average of $204). 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 October 30, 2025.

When flying from Idaho to Colorado, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight in the morning.

What is the cheapest day to fly from Idaho to Colorado?

Use this chart to determine the cheapest time to fly round-trip from Idaho to Colorado. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Idaho to Colorado flight should consider departing on Saturday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Idaho to Colorado have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
8,999 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
694 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
3,123 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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 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 96 times in the past calendar month.

  • How long is the flight from Idaho to Colorado?

    A quick flight from Idaho to Colorado can take about 2h 15m. Delta provides one of the quickest options available for as low as $197. The distance between Idaho and Colorado is about 834 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 United Airlines ($59), Delta ($69), and Alaska Airlines ($88).

  • 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, September is the cheapest month in which you can book a flight from Idaho to Colorado (average of $58). Flying from Idaho to Colorado in February is currently the most expensive (average of $204). 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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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$54Average$88FlexibilityNo cancel feeOn-time88%
FrontierCheapest$59Average$140FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$358FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$154Average$428FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$183Average$388FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$194Average$329FlexibilityNo cancel feeOn-time63%

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