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Idaho

$50+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
may. 6 — may. 131
mar. 5/6
mar. 5/13
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 mayo 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$89
(FlightHub)

One-way from

$50
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$303

Good round-trip deal

$156 or less

Good one-way deal

$108 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 May 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 mayo 1, 2025.

This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/153:23 pmDEN - IDA
Nonstop1h 44mAllegiant Air
dom. 6/295:49 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Deal found 4/30$89
This Frontier deal was found by Cheapflights users on 4/30. 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.
jue. 5/299:42 amDEN - GEG
Nonstop2h 22mFrontier
jue. 6/511:48 amGEG - DEN
Nonstop2h 21mFrontier
Deal found 4/30$157
This CheapOair deal was found by Cheapflights users on 4/30. 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.
jue. 5/1511:40 amDEN - BOI
Nonstop1h 57mFrontier
dom. 5/182:27 pmBOI - DEN
Nonstop1h 59mFrontier
Deal found 4/30$158
This Trip.com deal was found by Cheapflights users on 4/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/285:49 pmDEN - BOI
1 stop5h 56mMultiple Airlines
dom. 6/112:36 pmBOI - DEN
Nonstop1h 58mMultiple Airlines
Deal found 4/30$162
This Expedia deal was found by Cheapflights users on 4/30. 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.
mar. 6/176:00 amDEN - GEG
1 stop7h 28mMultiple Airlines
mar. 6/2411:48 amGEG - DEN
Nonstop2h 21mMultiple Airlines
Deal found 4/30$172
This United Airlines deal was found by Cheapflights users on 4/30. 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.
mar. 5/274:02 pmDEN - BOI
Nonstop1h 59mUnited Airlines
mar. 6/35:43 pmBOI - DEN
Nonstop1h 57mUnited Airlines
Deal found 4/30$189
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/285:49 pmDEN - BOI
1 stop5h 56mHawaiian Airlines
mié. 6/45:39 pmBOI - DEN
1 stop6h 26mHawaiian Airlines
Deal found 4/29$198
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
mié. 5/285:49 pmDEN - BOI
1 stop5h 56mAlaska Airlines
mié. 6/45:39 pmBOI - DEN
1 stop6h 26mAlaska Airlines
Deal found 4/30$199
This Southwest deal was found by Cheapflights users on 4/30. 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.
sáb. 5/242:15 pmDEN - BOI
Nonstop1h 55mSouthwest
lun. 5/265:05 amBOI - DEN
Nonstop1h 55mSouthwest
Deal found 4/30$200
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/237:05 amDEN - WYS
1 stop3h 35mDelta
mar. 5/273:15 pmWYS - DEN
1 stop4h 15mDelta
Deal found 4/29$202
This Delta deal was found by Cheapflights users on 4/30. 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.
sáb. 5/246:25 pmDEN - BOI
1 stop4h 24mDelta
dom. 5/255:40 pmBOI - DEN
1 stop4h 50mDelta
Deal found 4/30$209
This Delta deal was found by Cheapflights users on 4/30. 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.
vie. 6/136:23 pmDEN - IDA
1 stop4h 32mDelta
dom. 6/156:00 amIDA - DEN
1 stop5h 58mDelta
Deal found 4/30$209

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 mayo 1, 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

dom. 6/15

3:23 pm-5:07 pm

Nonstop1h 44m

Idaho Falls Fanning Field

dom. 6/29

5:49 pm-7:37 pm

Nonstop1h 48m

$89

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

jue. 5/29

9:42 am-11:04 am

Nonstop2h 22m

Spokane

jue. 6/5

11:48 am-3:09 pm

Nonstop2h 21m

$157

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 5/15

11:40 am-1:37 pm

Nonstop1h 57m

Boise Air Term. Gowen Fld

dom. 5/18

2:27 pm-4:26 pm

Nonstop1h 59m

$158

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mar. 5/27

9:54 am-11:51 am

Nonstop1h 57m

Boise Air Term. Gowen Fld

mar. 6/3

5:39 pm-12:05 am

1 stop6h 26m

$165

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 6/17

6:00 am-12:28 pm

1 stop7h 28m

Spokane

mar. 6/24

11:48 am-3:09 pm

Nonstop2h 21m

$172

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mar. 5/27

11:33 am-1:32 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

mié. 5/28

5:43 pm-7:40 pm

Nonstop1h 57m

$189

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mié. 5/28

5:49 pm-11:45 pm

1 stop5h 56m

Boise Air Term. Gowen Fld

mié. 6/4

5:39 pm-12:05 am

1 stop6h 26m

$198

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mié. 5/28

5:49 pm-11:45 pm

1 stop5h 56m

Boise Air Term. Gowen Fld

mar. 6/3

5:39 pm-12:05 am

1 stop6h 26m

$199

DenverBoise

DEN - BOI

DENBOI

Denver Intl

sáb. 5/24

7:55 am-9:50 am

Nonstop1h 55m

Boise Air Term. Gowen Fld

lun. 5/26

5:05 am-7:00 am

Nonstop1h 55m

$200

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

vie. 5/23

7:05 am-10:40 am

1 stop3h 35m

West Yellowstone

mar. 5/27

3:15 pm-7:30 pm

1 stop4h 15m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $406). 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 mayo 1, 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.

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 mayo 1, 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
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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 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 Allegiant Air, which is currently one of the cheapest options available, starting at $50. Frontier flights start at $66 while deals on Delta start at $86 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 $406). 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 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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$36Average$84FlexibilityNo cancel feeOn-time88%
FrontierCheapest$58Average$138FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$401FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$168Average$318FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$179Average$414FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$382FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$298Average$414FlexibilityNo cancel feeOn-time71%

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