What airlines fly to Colorado?

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Colorado from Idaho according to our data. United Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 5 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

How long is the flight from Idaho to Colorado?

Flight times from Idaho to Colorado vary, but if you’re flying out of Boise and flying into Denver (one of the most popular routes), then the duration is 1h 45m on average. Another popular route from Idaho to Colorado is flying from Idaho Falls to Denver, which will take roughly 1h 50m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Idaho to Colorado?

United Airlines, Delta, and Southwest are the most popular carriers operating from Idaho to Colorado

How many flights depart from Idaho to Colorado on average per day?

The number of flights available between Idaho and Colorado is 39 per day as of June 2026. The most frequent departure time is 2:00PM, with 49% of daily flights leaving in the afternoon.

How many flights depart from Idaho to Colorado on average per week?

273 flights are operational weekly from Idaho to Colorado as of June 2026. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.

When did momondo last update prices for flights from Idaho to Colorado?

Prices for flights from Idaho to Colorado are updated daily.

How many operators does momondo search for flights from Idaho to Colorado?

The number of operators available for flights from Idaho to Colorado is 6 as of June 2026.

How old do you have to be to fly from Idaho to Colorado?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Colorado.

What documentation or ID do you need to fly to Colorado?

The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$76 Cheap Flights from Idaho to Colorado in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:59 pm - 3:00 pm

BOI

DEN

2h 01mnonstop

9:55 am - 12:04 pm

DEN

BOI

2h 09mnonstop

$172Frontier

Tue, Sep 15 - Thu, Sep 17

1:24 pm - 3:30 pm

BOI

DEN

2h 06mnonstop

10:29 am - 12:29 pm

DEN

BOI

2h 00mnonstop

$173Frontier

Tue, Aug 4 - Tue, Aug 11

1:24 pm - 3:30 pm

BOI

DEN

2h 06mnonstop

8:40 am - 2:07 pm

DEN

BOI

5h 27m

1 stop

$190Multiple Airlines

Tue, Aug 4 - Tue, Aug 11

1:24 pm - 3:30 pm

BOI

DEN

2h 06mnonstop

8:40 am - 3:26 pm

DEN

BOI

6h 46m

1 stop

$194Multiple Airlines

Tue, Aug 11 - Wed, Aug 12

4:04 pm - 5:58 pm

IDA

DEN

1h 54mnonstop

1:39 pm - 3:23 pm

DEN

IDA

1h 44mnonstop

$249United Airlines

Sat, Aug 15 - Sat, Aug 22

5:54 pm - 7:45 pm

IDA

DEN

1h 51mnonstop

8:05 am - 9:50 am

DEN

IDA

1h 45mnonstop

$258United Airlines

Fri, Jul 17 - Sun, Jul 19

5:06 pm - 10:42 pm

BOI

COS

5h 36m

1 stop

5:55 pm - 12:04 am

COS

BOI

6h 09m

1 stop

$265Delta

Sat, Oct 31 - Wed, Nov 11

6:00 am - 9:12 am

IDA

DEN

3h 12m

1 stop

5:35 am - 10:50 am

DEN

IDA

5h 15m

1 stop

$269Delta

Thu, Jul 30 - Thu, Aug 6

4:55 pm - 9:50 pm

BOI

COS

4h 55m

1 stop

7:30 am - 2:30 pm

COS

BOI

7h 00m

2 stops

$306Southwest

Thu, Aug 13 - Sat, Aug 15

6:10 am - 11:00 am

BOI

COS

4h 50m

1 stop

7:30 pm - 12:25 am

COS

BOI

4h 55m

1 stop

$318Southwest

Sat, Sep 5 - Sun, Sep 13

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United Airlines flights from Idaho to Colorado

Our best United Airlines deals on Idaho to Colorado flight tickets

United Airlines

Jul 21

BOI6:30 amBoise Air Term. Gowen Fld

1h 59m

DEN8:29 amDenver Intl

Jul 28

DEN8:25 pmDenver Intl

2h 12m

BOI10:37 pmBoise Air Term. Gowen Fld

$245

United Airlines

Aug 15

IDA4:04 pmIdaho Falls Fanning Field

1h 54m

DEN5:58 pmDenver Intl

Aug 22

DEN1:39 pmDenver Intl

1h 44m

IDA3:23 pmIdaho Falls Fanning Field

$249

United Airlines

Jul 17

IDA5:54 pmIdaho Falls Fanning Field

1h 51m

DEN7:45 pmDenver Intl

Jul 19

DEN8:05 amDenver Intl

1h 45m

IDA9:50 amIdaho Falls Fanning Field

$258

Southwest flights from Idaho to Colorado

Our best Southwest deals on Idaho to Colorado flight tickets

Southwest

Jul 21

BOI4:05 pmBoise Air Term. Gowen Fld

2h 00m

DEN6:05 pmDenver Intl

Jul 28

DEN6:25 pmDenver Intl

6h 10m

1 stop

BOI12:35 amBoise Air Term. Gowen Fld

$255

Southwest

Jul 21

BOI4:05 pmBoise Air Term. Gowen Fld

2h 00m

DEN6:05 pmDenver Intl

Jul 28

DEN6:00 amDenver Intl

8h 25m

2 stops

BOI2:25 pmBoise Air Term. Gowen Fld

$260

Southwest

Aug 13

BOI4:55 pmBoise Air Term. Gowen Fld

4h 55m

1 stop

COS9:50 pmColorado Springs

Aug 15

COS7:30 amColorado Springs

7h 00m

2 stops

BOI2:30 pmBoise Air Term. Gowen Fld

$306

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 9/15

12:59 pm-3:00 pm

Nonstop2h 01m

Denver Intl

Thu 9/17

9:55 am-12:04 pm

Nonstop2h 09m

$172

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 8/4

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Tue 8/11

10:29 am-12:29 pm

Nonstop2h 00m

$173

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 8/4

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Tue 8/11

8:40 am-2:07 pm

1 stop5h 27m

$190

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 8/11

1:24 pm-3:30 pm

Nonstop2h 06m

Denver Intl

Wed 8/12

8:40 am-3:26 pm

1 stop6h 46m

$194

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 8/15

4:04 pm-5:58 pm

Nonstop1h 54m

Denver Intl

Sat 8/22

1:39 pm-3:23 pm

Nonstop1h 44m

$249

Quickest round-trip

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 7/17

5:54 pm-7:45 pm

Nonstop1h 51m

Denver Intl

Sun 7/19

8:05 am-9:50 am

Nonstop1h 45m

$258

BoiseColorado Springs

BOI - COS

BOICOS

Boise Air Term. Gowen Fld

Sat 10/31

5:06 pm-10:42 pm

1 stop5h 36m

Colorado Springs

Wed 11/11

5:55 pm-12:04 am

1 stop6h 09m

$265

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 7/30

6:00 am-9:12 am

1 stop3h 12m

Denver Intl

Thu 8/6

5:35 am-10:50 am

1 stop5h 15m

$269

BoiseColorado Springs

BOI - COS

BOICOS

Boise Air Term. Gowen Fld

Thu 8/13

4:55 pm-9:50 pm

1 stop4h 55m

Colorado Springs

Sat 8/15

7:30 am-2:30 pm

2 stops7h 00m

$306

BoiseColorado Springs

BOI - COS

BOICOS

Boise Air Term. Gowen Fld

Sat 9/5

6:10 am-11:00 am

1 stop4h 50m

Colorado Springs

Sun 9/13

7:30 pm-12:25 am

1 stop4h 55m

$318

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Idaho, with most prices found around $26. The month of February is another great option to travel to Colorado, with average flight prices from Idaho averaging around $27.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Idaho to Colorado is on a Thursday when prices can be found for as low as $404. On the other hand, Monday is the most expensive day to depart from Idaho because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $534.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $242. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $480 per ticket.

What is the cheapest Idaho to Colorado flight route?

Fly from Boise Air Term. Gowen Fld to Denver Intl for the best Idaho - Colorado flight prices

How far in advance should I book a flight from Idaho to Colorado?

You are more likely to see cheaper flights to Colorado from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $272 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Idaho for as low as $220 on momondo.

What cabin class options are available on Idaho to Colorado flights?

There are 4 cabin classes available to choose from on Idaho to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Idaho to Colorado flights?

No. A direct flight is the cheapest option for a flight between Idaho to Colorado.

Cheap Idaho to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Colorado

Best Price Found	$198
Fastest flight time	1h 35m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from Idaho in the past 72 hours is $198. The best round-trip flight deal from Idaho to Colorado found on momondo in the last 72 hours is $380.

The fastest flight from Idaho to Colorado takes 1h 35m

Direct flights go from Idaho to Colorado every day.

There are 87 airports in Colorado. From Idaho there are direct flights to Denver Intl (DEN).

Search flight deals

Frequently asked questions about flying from Idaho to Colorado

When did momondo last update prices for flights from Idaho to Colorado?
Prices for flights from Idaho to Colorado are updated daily.
How many operators does momondo search for flights from Idaho to Colorado?
The number of operators available for flights from Idaho to Colorado is 6 as of June 2026.
How old do you have to be to fly from Idaho to Colorado?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Colorado.
What documentation or ID do you need to fly to Colorado?
The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Idaho to Colorado?
Based on momondo bookings for flights between Idaho and Colorado, the leading plane model is Embraer 175 (Enhanced Winglets), making up 18.85% of the total bookings. Other popular models include Boeing 737-800 with 14.59%, Boeing 737-900 with 14.32%, and Boeing 737 MAX 8 with 9.74%.

Best airlines flying from Idaho to Colorado

Compare and see reviews for airlines that fly from Idaho to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $43	Free Cancellation	Rating 7.3 689 reviews	Search Allegiant Air flights
Frontier	PriceFrom $55	Free Cancellation	Rating 5.6 2,855 reviews	Search Frontier flights
Delta	PriceFrom $104	Free Cancellation	Rating 7.8 8,451 reviews	Search Delta flights
United Airlines	PriceFrom $182	Free Cancellation	Rating 7.4 9,896 reviews	Search United Airlines flights
Southwest	PriceFrom $189	Free Cancellation	Rating 7.9 4,246 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Colorado?

It is quick and easy to find Idaho to Colorado flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Colorado that suits you.

Can I find flights from Idaho to Colorado with flexible booking policies on momondo?

Flights from Idaho to Colorado with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Idaho to Colorado?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho to Colorado.

I’m not ready to book a flight from Idaho to Colorado right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Idaho to Colorado flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Popular cities in Colorado

Flights to New Yorkfrom $73

Flights to Los Angelesfrom $60

Flights to Orlandofrom $62

Flights to Miamifrom $78

Flights to Chicagofrom $69

Flights to San Franciscofrom $55

Flights to Las Vegasfrom $56

Flights to Washington, D.C.from $55

Flights to Bostonfrom $61

Flights to Atlantafrom $58

Flights to Fort Lauderdalefrom $59

Flights to Dallasfrom $104

Cheap flights from Idaho to Colorado from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Colorado departing on 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Idaho to Colorado

Our best United Airlines deals on Idaho to Colorado flight tickets

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Our best Southwest deals on Idaho to Colorado flight tickets

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How to get the cheapest flight ticket from Idaho to Colorado

What is the cheapest month to fly to Colorado?

What is the cheapest day to depart on your flight to Colorado?

What is the cheapest time of day to depart on your flight to Colorado?

What is the cheapest Idaho to Colorado flight route?

How far in advance should I book a flight from Idaho to Colorado?

What cabin class options are available on Idaho to Colorado flights?

Can stopping save me money on Idaho to Colorado flights?

What is the cheapest airline that flies from Idaho to Colorado?

What airlines fly to Colorado?

How many flights depart from Idaho to Colorado on average per day?

How many flights depart from Idaho to Colorado on average per week?

How long is the flight from Idaho to Colorado?

Cheap Idaho to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Colorado

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

Frequently asked questions about flying from Idaho to Colorado

Best airlines flying from Idaho to Colorado

Compare and see reviews for airlines that fly from Idaho to Colorado with momondo

Why use momondo?

An easier way to manage your Colorado trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Colorado

Popular cities in Colorado

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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