$28+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Feb 28 — Mar 71
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to Colorado
Cheapest flights from Idaho to ColoradoExplore 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 January 29, 2026.
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 January 29, 2026.
This Expedia deal was found by Cheapflights users on 1/26. 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 2/1912:36 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Sun 2/229:01 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/26![Frontier logo]()
$58
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/2612:38 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Sun 3/19:01 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$65
This Frontier deal was found by Cheapflights users on 1/27. 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 2/2711:56 am
BOI
- DEN
Nonstop2h 00m
Frontier
Sun 3/89:10 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/2612:38 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Thu 3/59:41 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$74
This CheapOair deal was found by Cheapflights users on 1/27. 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.
Fri 2/1311:56 am
BOI
- DEN
Nonstop2h 00m
Frontier
Sun 2/159:01 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sun 2/2211:56 am
BOI
- DEN
Nonstop2h 00m
Frontier
Thu 2/269:41 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$86
This Frontier deal was found by Cheapflights users on 1/27. 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 2/1912:36 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Fri 2/279:01 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1912:36 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Sun 3/19:01 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/28![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/1912:36 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Sun 3/229:10 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/26![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 1/27. 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 2/1311:56 am
BOI
- DEN
Nonstop2h 00m
Frontier
Fri 2/209:01 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/27![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1912:36 pm
BOI
- DEN
Nonstop2h 00m
Frontier
Thu 3/59:41 am
DEN
- BOI
Nonstop2h 10m
Frontier
Deal found 1/28![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/1912:22 pm
GEG
- DEN
Nonstop2h 23m
Frontier
Thu 3/59:50 am
DEN
- GEG
Nonstop2h 37m
Frontier
Deal found 1/27![Frontier logo]()
$119
Find flight deals from Idaho to Colorado
Keep the following information in mind while searching for Idaho to Colorado flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $58 (Expedia) |
One-way from | $28 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $279 |
Good round-trip deal | $302 or less |
Good one-way deal | $166 or less |
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 January 29, 2026.
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
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 5/14
11:53 am-1:56 pm
Nonstop2h 03m
Denver Intl
Sun 5/17
9:10 am-11:08 am
Nonstop1h 58m
$150
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Thu 3/5
12:22 pm-3:45 pm
Nonstop2h 23m
Denver Intl
Tue 3/10
7:00 am-11:06 am
1 stop5h 06m
$153
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 2/26
5:20 pm-7:10 pm
Nonstop1h 50m
Denver Intl
Sun 3/1
8:05 am-10:10 am
Nonstop2h 05m
$177
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 2/24
6:28 am-12:14 pm
1 stop5h 46m
Denver Intl
Wed 3/4
7:00 am-2:58 pm
1 stop7h 58m
$177
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Fri 3/27
2:35 pm-4:25 pm
Nonstop1h 50m
Denver Intl
Sun 3/29
11:44 am-1:24 pm
Nonstop1h 40m
$189
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Fri 5/29
6:03 pm-7:56 pm
Nonstop1h 53m
Denver Intl
Mon 6/1
11:45 am-1:24 pm
Nonstop1h 39m
$189
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sun 3/1
5:35 am-9:24 am
1 stop3h 49m
Denver Intl
Thu 3/5
6:40 am-1:11 pm
1 stop6h 31m
$197
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 2/17
5:40 am-10:42 am
1 stop5h 02m
Denver Intl
Wed 2/25
7:00 am-2:58 pm
1 stop7h 58m
$197
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 3/5
5:50 am-12:15 pm
1 stop6h 25m
Denver Intl
Sun 3/8
6:30 am-1:05 pm
1 stop6h 35m
$197
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 3/4
5:40 am-10:42 am
1 stop5h 02m
Denver Intl
Tue 3/10
7:00 am-3:08 pm
1 stop8h 08m
$197
Showing 1-10 of 60 results
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, December is the cheapest month in which you can book a flight from Idaho to Colorado (average of $57). Flying from Idaho to Colorado in April is currently the most expensive (average of $189). 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 January 29, 2026.
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 46% versus a flight in the morning.
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 January 29, 2026.
The most flights from USID to USCO are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).
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 January 29, 2026.
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.
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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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.
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 January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$43 | Average$84 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$54 | Average$126 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$111 | Average$322 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$154 | Average$428 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$160 | Average$371 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$384 | FlexibilityNo cancel fee | On-time63% |