Idaho

$55+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
ene. 26 — feb. 21
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Cheap flight deals from Colorado to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.

Round-trip from

$197
(Southwest)

One-way from

$99
(United Airlines)

Good round-trip deal

$277 or less

Good one-way deal

$158 or less
From Colorado to Idaho
One-way flight from Colorado to Idaho
Price to beat on a round-trip flight from Colorado to Idaho.
Price to beat on a one-way flight from Colorado to Idaho.

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 enero 21, 2025.

This Southwest deal was found by Cheapflights users on 1/21. 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.
jue. 4/109:35 pmDEN - BOI
Nonstop1h 55mSouthwest
jue. 4/175:05 amBOI - DEN
Nonstop1h 55mSouthwest
Deal found 1/21$197
This Delta deal was found by Cheapflights users on 1/21. 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.
jue. 2/135:40 amDEN - BOI
1 stop4h 10mDelta
lun. 2/175:59 pmBOI - DEN
1 stop4h 36mDelta
Deal found 1/21$217
This Southwest deal was found by Cheapflights users on 1/21. 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.
mar. 3/184:20 pmCOS - BOI
1 stop7h 10mSouthwest
mar. 3/256:35 amBOI - COS
1 stop7h 05mSouthwest
Deal found 1/21$217
This Delta deal was found by Cheapflights users on 1/20. 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.
mar. 2/45:40 amDEN - LWS
1 stop7h 17mDelta
sáb. 2/812:38 pmLWS - DEN
1 stop5h 43mDelta
Deal found 1/20$238
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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.
sáb. 3/17:00 amDEN - BOI
1 stop6h 51mAlaska Airlines
lun. 3/32:46 pmBOI - DEN
1 stop9h 03mAlaska Airlines
Deal found 1/20$246
This Delta deal was found by Cheapflights users on 1/20. 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. 5/247:10 amDEN - WYS
1 stop3h 27mDelta
mar. 5/273:28 pmWYS - DEN
1 stop3h 42mDelta
Deal found 1/20$249
This United Airlines deal was found by Cheapflights users on 1/20. 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.
jue. 2/273:45 pmDEN - BOI
Nonstop2h 05mUnited Airlines
dom. 3/25:30 pmBOI - DEN
Nonstop2h 00mUnited Airlines
Deal found 1/20$257
This Delta deal was found by Cheapflights users on 1/20. 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.
mié. 2/197:50 pmDEN - GEG
1 stop5h 13mDelta
mié. 2/266:15 amGEG - DEN
1 stop5h 11mDelta
Deal found 1/20$263
This Delta deal was found by Cheapflights users on 1/21. 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. 2/285:40 amDEN - IDA
1 stop6h 50mDelta
dom. 3/26:00 amIDA - DEN
1 stop5h 33mDelta
Deal found 1/21$279
This United Airlines deal was found by Cheapflights users on 1/20. 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. 3/1810:55 amCOS - BOI
1 stop7h 10mUnited Airlines
mar. 3/255:25 pmBOI - COS
1 stop4h 35mUnited Airlines
Deal found 1/20$287
This United deal was found by Cheapflights users on 1/21. 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.
mié. 3/128:05 amDEN - JAC
Nonstop1h 43mUnited Airlines
sáb. 3/157:00 amJAC - DEN
Nonstop1h 52mUnited Airlines
Deal found 1/21$289
This United Airlines deal was found by Cheapflights users on 1/20. 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.
sáb. 5/247:45 amDEN - WYS
Nonstop1h 52mUnited Airlines
mar. 5/271:48 pmWYS - DEN
Nonstop1h 45mUnited Airlines
Deal found 1/20$290

Find flights from Colorado to Idaho within your budget

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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 4/10

9:35 pm-11:30 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

jue. 4/17

5:05 am-7:00 am

Nonstop1h 55m

$197

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 2/13

5:40 am-9:50 am

1 stop4h 10m

Boise Air Term. Gowen Fld

mar. 2/18

11:25 am-3:20 pm

1 stop3h 55m

$217

Colorado SpringsBoise

COS - BOI

COSBOI

Colorado Springs

mar. 3/18

4:20 pm-11:30 pm

1 stop7h 10m

Boise Air Term. Gowen Fld

mar. 3/25

6:35 am-1:40 pm

1 stop7h 05m

$217

DenverLewiston

DEN - LWS

DENLWS

Denver Intl

mar. 2/4

5:40 am-11:57 am

1 stop7h 17m

Lewiston Nez Perce Rgnl

sáb. 2/8

12:38 pm-7:21 pm

1 stop5h 43m

$238

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

sáb. 5/24

7:10 am-10:37 am

1 stop3h 27m

West Yellowstone

mar. 5/27

3:28 pm-7:10 pm

1 stop3h 42m

$249

DenverBoise

DEN - BOI

DENBOI

Denver Intl

sáb. 2/8

7:00 am-1:45 pm

1 stop6h 45m

Boise Air Term. Gowen Fld

mar. 2/11

2:40 pm-10:36 pm

1 stop7h 56m

$253

DenverBoise

DEN - BOI

DENBOI

Denver Intl

sáb. 2/22

3:45 pm-5:50 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

mar. 2/25

5:30 pm-7:30 pm

Nonstop2h 00m

$262

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mié. 2/19

7:50 pm-12:03 am

1 stop5h 13m

Spokane

mié. 2/26

3:25 pm-12:17 am

1 stop7h 52m

$263

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

jue. 2/20

6:05 pm-10:44 pm

1 stop4h 39m

Idaho Falls Fanning Field

jue. 2/27

6:58 pm-10:35 pm

1 stop3h 37m

$279

Colorado SpringsBoise

COS - BOI

COSBOI

Colorado Springs

mar. 3/18

10:55 am-6:05 pm

1 stop7h 10m

Boise Air Term. Gowen Fld

mar. 3/25

5:25 pm-10:00 pm

1 stop4h 35m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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.

Travel insights for flights from Colorado to Idaho

Get recent, data-driven insights about flights from Colorado to Idaho including ideal travel times, pricing trends, and more.

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 $436). 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 enero 21, 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 enero 21, 2025.

The most flights from USCO to USID are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 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 enero 21, 2025.
To help decide which airline to fly from Colorado to Idaho, see what other customers have to say about Southwest, Delta and Alaska Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,662 reviews
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,706 reviews
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,521 reviews
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
8,985 reviews
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.2
Good
10,000 reviews
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $99. Delta flights start at $109 while deals on Southwest start at $114 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 $436). 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 Colorado to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$156Average$430FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$413FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$182Average$235FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$223Average$376FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$298Average$428FlexibilityNo cancel feeOn-time71%
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