What airlines fly to Idaho?

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Idaho from Colorado according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Colorado and Idaho is 269 per week as of December 2025. The most frequent departure day is Sun, with 16% of weekly flights leaving on this day.

How long is the flight from Colorado to Idaho?

Flight times from Colorado to Idaho vary, but if you’re flying out of Denver and flying into Boise (one of the most popular routes), then the duration is 1h 58m on average. Another popular route from Colorado to Idaho is flying from Colorado Springs to Boise, which will take roughly 4h 08m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

As of December 2025, 38 flights take off from Colorado and land in Idaho each day. The most common flight departure time for this route is 11:00AM, with 41% of daily flights taking off at noon.

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

Prices for flights from Colorado to Idaho are updated daily.

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

As of December 2025, there are 6 operators available to choose from for flights from Colorado to Idaho.

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

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 Colorado to Idaho.

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

The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$32 Cheap Flights from Colorado to Idaho in 2025/26

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Find the cheapest flights from Colorado to Idaho

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:23 am - 1:25 pm

DEN

BOI

2h 02mnonstop

2:01 pm - 4:01 pm

BOI

DEN

2h 00mnonstop

$73Frontier

Thu, Jan 15 - Sun, Jan 18

9:01 am - 11:11 am

DEN

BOI

2h 10mnonstop

11:56 am - 1:56 pm

BOI

DEN

2h 00mnonstop

$91Frontier

Sun, Feb 15 - Fri, Feb 20

11:23 am - 1:25 pm

DEN

BOI

2h 02mnonstop

2:01 pm - 4:01 pm

BOI

DEN

2h 00mnonstop

$94Frontier

Thu, Jan 15 - Sun, Jan 18

5:09 pm - 11:59 pm

DEN

BOI

6h 50m1 stop

12:07 pm - 2:07 pm

BOI

DEN

2h 00mnonstop

$121Multiple Airlines

Fri, Jan 23 - Mon, Jan 26

7:00 am - 12:51 pm

DEN

BOI

5h 51m1 stop

12:07 pm - 2:07 pm

BOI

DEN

2h 00mnonstop

$129Multiple Airlines

Wed, Jan 28 - Fri, Jan 30

8:00 am - 9:56 am

DEN

IDA

1h 56mnonstop

2:40 pm - 4:31 pm

IDA

DEN

1h 51mnonstop

$189United Airlines

Fri, Jan 16 - Sun, Jan 18

6:40 am - 1:01 pm

DEN

SUN

6h 21m1 stop

3:25 pm - 11:25 pm

SUN

DEN

8h 00m2 stops

$190Delta

Fri, Feb 13 - Tue, Feb 17

12:00 pm - 8:40 am

COS

GEG

21h 40m2 stops

11:25 am - 10:23 pm

GEG

COS

9h 58m2 stops

$196Delta

Sat, Jan 17 - Tue, Jan 27

8:00 am - 9:48 am

DEN

IDA

1h 48mnonstop

5:33 pm - 7:25 pm

IDA

DEN

1h 52mnonstop

$249United Airlines

Wed, Feb 25 - Sat, Feb 28

3:10 pm - 8:50 pm

COS

GEG

6h 40m1 stop

10:50 am - 9:35 pm

GEG

COS

9h 45m2 stops

$322Southwest

Tue, Jan 20 - Tue, Jan 27

Frontier flights from Colorado to Idaho

Our best Frontier deals on Colorado to Idaho flight tickets

Frontier

Jan 15

DEN11:23 amDenver Intl

2h 02m

BOI1:25 pmBoise Air Term. Gowen Fld

Jan 18

BOI2:01 pmBoise Air Term. Gowen Fld

2h 00m

DEN4:01 pmDenver Intl

$73

Find similar

Frontier

Feb 6

DEN9:10 amDenver Intl

2h 02m

BOI11:12 amBoise Air Term. Gowen Fld

Feb 13

BOI11:56 amBoise Air Term. Gowen Fld

2h 00m

DEN1:56 pmDenver Intl

$91

Find similar

Frontier

Jan 15

DEN11:23 amDenver Intl

2h 02m

BOI1:25 pmBoise Air Term. Gowen Fld

Jan 18

BOI2:01 pmBoise Air Term. Gowen Fld

2h 00m

DEN4:01 pmDenver Intl

$94

Find similar

Delta flights from Colorado to Idaho

Our best Delta deals on Colorado to Idaho flight tickets

Delta

Jan 15

DEN12:30 pmDenver Intl

5h 58m

1 stop

BOI6:28 pmBoise Air Term. Gowen Fld

Jan 18

BOI5:15 pmBoise Air Term. Gowen Fld

6h 10m

1 stop

DEN11:25 pmDenver Intl

$165

Find similar

Delta

Feb 26

DEN5:30 amDenver Intl

10h 28m

2 stops

GEG2:58 pmSpokane

Mar 1

GEG3:45 pmSpokane

6h 40m

1 stop

DEN11:25 pmDenver Intl

$170

Find similar

Delta

Jan 22

DEN12:46 pmDenver Intl

11h 06m

2 stops

GEG10:52 pmSpokane

Jan 24

GEG11:25 amSpokane

7h 33m

2 stops

DEN7:58 pmDenver Intl

$176

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 1/15

11:23 am-1:25 pm

Nonstop2h 02m

Boise Air Term. Gowen Fld

Sun 1/18

2:01 pm-4:01 pm

Nonstop2h 00m

$73

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sun 2/15

9:01 am-11:11 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Fri 2/20

11:56 am-1:56 pm

Nonstop2h 00m

$91

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 1/15

11:23 am-1:25 pm

Nonstop2h 02m

Boise Air Term. Gowen Fld

Sun 1/18

2:01 pm-4:01 pm

Nonstop2h 00m

$94

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Fri 1/23

5:09 pm-11:59 pm

1 stop6h 50m

Boise Air Term. Gowen Fld

Mon 1/26

12:07 pm-2:07 pm

Nonstop2h 00m

$121

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 1/28

7:00 am-12:51 pm

1 stop5h 51m

Boise Air Term. Gowen Fld

Fri 1/30

12:07 pm-2:07 pm

Nonstop2h 00m

$129

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Fri 1/16

8:00 am-9:56 am

Nonstop1h 56m

Idaho Falls Fanning Field

Sun 1/18

2:40 pm-4:31 pm

Nonstop1h 51m

$189

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Fri 2/13

6:40 am-1:01 pm

1 stop6h 21m

Hailey Sun Valley-Friedman

Tue 2/17

3:25 pm-11:25 pm

2 stops8h 00m

$190

Colorado SpringsSpokane

COS - GEG

COSGEG

Colorado Springs

Sat 1/17

12:00 pm-8:40 am

2 stops21h 40m

Spokane

Tue 1/27

11:25 am-10:23 pm

2 stops9h 58m

$196

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Wed 2/25

8:00 am-9:48 am

Nonstop1h 48m

Idaho Falls Fanning Field

Sat 2/28

5:33 pm-7:25 pm

Nonstop1h 52m

$249

Colorado SpringsSpokane

COS - GEG

COSGEG

Colorado Springs

Tue 1/20

3:10 pm-8:50 pm

1 stop6h 40m

Spokane

Tue 1/27

10:50 am-9:35 pm

2 stops9h 45m

$322

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Idaho

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 Idaho?

In general, September is the cheapest month to fly from Colorado to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $163. If you don’t want to visit Idaho in September, then you should wait until October to fly from Colorado, when ticket prices are also cheap, with an average price of $210.

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

Our data shows that Thursday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $191. On the other hand, Monday is the most expensive day to depart from Colorado because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $324.

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

According to our data, the cheapest time of day to fly to Idaho is in the morning. momondo users have found flights departing from Colorado to Idaho in the morning for as low as $215. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $315 per ticket.

What is the cheapest Colorado to Idaho flight route?

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

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

You are more likely to see cheaper flights to Idaho from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $251 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Colorado for as low as $164 on momondo.

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

There are 4 cabin classes available to choose from on Colorado to Idaho 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 Colorado to Idaho flights?

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

Cheap Colorado to Idaho flight deals and tips

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

Best Price Found	$121
Fastest flight time	1h 31m
Direct flights	Every day
Airports in Idaho	27 airports

The best one-way flight to Idaho from Colorado in the past 72 hours is $121. The best round-trip flight deal from Colorado to Idaho found on momondo in the last 72 hours is $145.

The fastest flight from Colorado to Idaho takes 1h 31m

Direct flights go from Colorado to Idaho every day.

There are 27 airports in Idaho. From Colorado there are direct flights to Idaho Falls Fanning Field (IDA), Jackson Hole (JAC), Boise Air Term. Gowen Fld (BOI).

Search flight deals

When did momondo last update prices for flights from Colorado to Idaho?
Prices for flights from Colorado to Idaho are updated daily.
How many operators does momondo search for flights from Colorado to Idaho?
As of December 2025, there are 6 operators available to choose from for flights from Colorado to Idaho.
How old do you have to be to fly from Colorado to Idaho?
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 Colorado to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho 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 Idaho. 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 Colorado to Idaho?
momondo data reveals that the most frequently booked plane model on the route from Colorado to Idaho is Embraer 175 (Enhanced Winglets), representing 15.64% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 700 at 15.64%, Boeing 737-900 at 14.40%, and Boeing 737-700 Passenger/BBJ1 (winglets) at 10.61%.

Best airlines flying from Colorado to Idaho

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

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $44	Free Cancellation	Rating 7.2 701 reviews	Search Allegiant Air flights
Frontier	PriceFrom $59	Free Cancellation	Rating 5.8 3,077 reviews	Search Frontier flights
Delta	PriceFrom $98	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
United Airlines	PriceFrom $177	Free Cancellation	Rating 7.4 9,102 reviews	Search United Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Colorado to Idaho. momondo saves you time and could save you money on your trip.

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

All flight searches from Colorado to Idaho on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Colorado to Idaho flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Colorado to Idaho 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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Find better results for your trip to Idaho

Popular cities in Idaho

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Flights to Orlandofrom $29

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Flights to Las Vegasfrom $39

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Flights to Bostonfrom $50

Flights to Atlantafrom $46

Flights to Dallasfrom $51

Flights to Seattlefrom $62

Cheap flights from Colorado to Idaho from $32

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Idaho departing on 1/18. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Colorado to Idaho

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Frontier flights from Colorado to Idaho

Our best Frontier deals on Colorado to Idaho flight tickets

Delta flights from Colorado to Idaho

Our best Delta deals on Colorado to Idaho flight tickets

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See travel insights to Idaho from

How to get the cheapest flight ticket from Colorado to Idaho

What is the cheapest month to fly to Idaho?

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

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

What is the cheapest Colorado to Idaho flight route?

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

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

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

There are 4 cabin classes available to choose from on Colorado to Idaho 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 Colorado to Idaho flights?

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

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

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

What airlines fly to Idaho?

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

As of December 2025, 38 flights take off from Colorado and land in Idaho each day. The most common flight departure time for this route is 11:00AM, with 41% of daily flights taking off at noon.

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

The number of flights available between Colorado and Idaho is 269 per week as of December 2025. The most frequent departure day is Sun, with 16% of weekly flights leaving on this day.

How long is the flight from Colorado to Idaho?

Cheap Colorado to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

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

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

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

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

What is the most popular plane model from Colorado to Idaho?

Best airlines flying from Colorado to Idaho

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

Why use momondo?

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

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

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

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

An easier way to manage your Idaho 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 Idaho

Popular cities in Idaho

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