What airlines fly to Denver?

United Airlines, Southwest and Frontier are the top three most popular airlines that fly to Denver from Idaho according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

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

239 flights are operational weekly from Idaho to Denver as of December 2025. The most popular departure day for this route is Sat, with 17% of flights per week taking off on this day.

What is the cheapest airline that flies from Idaho to Denver Intl?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Idaho to Denver Intl

How long does it take to fly to Denver?

Flight times vary depending on what airport in Idaho you fly out of and what airport in Denver you fly into. For example, flying from Boise to Denver takes 1h 45m on average. On the other hand, flying from Idaho Falls to Denver takes 1h 47m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

The number of flights available between Idaho and Denver is 34 per day as of December 2025. The most frequent departure time is 2:00PM, with 45% of daily flights leaving in the afternoon.

When did momondo last update prices for flights from Idaho to Denver Intl Airport?

Prices for flights from Idaho to Denver Intl Airport are updated daily.

How many operators does momondo search for flights from Idaho to Denver Intl Airport?

There are 6 operators available for flights from Idaho to Denver Intl Airport as of December 2025.

How old do you have to be to fly from Idaho to Denver Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:07 pm - 2:07 pm

BOI

DEN

2h 00mnonstop

9:54 am - 9:20 am

DEN

BOI

23h 26m1 stop

$138Multiple Airlines

Fri, Jan 23 - Sun, Jan 25

3:43 pm - 11:35 pm

BOI

DEN

7h 52m1 stop

9:10 am - 11:12 am

DEN

BOI

2h 02mnonstop

$141Multiple Airlines

Fri, Jan 23 - Mon, Jan 26

5:55 pm - 11:35 pm

BOI

DEN

5h 40m1 stop

9:41 am - 11:51 am

DEN

BOI

2h 10mnonstop

$144Multiple Airlines

Mon, Feb 9 - Thu, Feb 12

12:07 pm - 2:08 pm

BOI

DEN

2h 01mnonstop

9:10 am - 11:17 am

DEN

BOI

2h 07mnonstop

$147Frontier

Fri, Jan 9 - Sun, Jan 11

12:07 pm - 2:08 pm

BOI

DEN

2h 01mnonstop

9:10 am - 11:17 am

DEN

BOI

2h 07mnonstop

$148Frontier

Fri, Jan 9 - Sun, Jan 11

2:40 pm - 4:31 pm

IDA

DEN

1h 51mnonstop

8:00 am - 9:48 am

DEN

IDA

1h 48mnonstop

$189United Airlines

Fri, Jan 23 - Sun, Feb 15

5:57 pm - 7:40 pm

IDA

DEN

1h 43mnonstop

11:50 am - 1:31 pm

DEN

IDA

1h 41mnonstop

$202United Airlines

Fri, May 22 - Sun, May 24

1:41 pm - 10:27 pm

SUN

DEN

8h 46m2 stops

6:40 am - 1:01 pm

DEN

SUN

6h 21m1 stop

$230Delta

Fri, Feb 20 - Sun, Feb 22

2:07 pm - 8:53 pm

IDA

DEN

6h 46m1 stop

6:00 am - 1:37 pm

DEN

IDA

7h 37m1 stop

$239American Airlines

Fri, Jan 9 - Tue, Jan 13

7:25 am - 12:00 pm

SUN

DEN

4h 35m1 stop

6:40 am - 1:01 pm

DEN

SUN

6h 21m1 stop

$327Delta

Fri, Feb 20 - Sun, Feb 22

United Airlines flights from Idaho to Denver

Our best United Airlines deals on Idaho to Denver flight tickets

United Airlines

Jan 25

BOI5:16 pmBoise Air Term. Gowen Fld

2h 14m

DEN7:30 pmDenver Intl

Feb 1

DEN7:45 amDenver Intl

2h 21m

BOI10:06 amBoise Air Term. Gowen Fld

$177

Find similar

United Airlines

Jan 23

IDA2:40 pmIdaho Falls Fanning Field

1h 51m

DEN4:31 pmDenver Intl

Feb 15

DEN8:00 amDenver Intl

1h 48m

IDA9:48 amIdaho Falls Fanning Field

$189

Find similar

United Airlines

Jan 23

BOI6:10 amBoise Air Term. Gowen Fld

2h 10m

DEN8:20 amDenver Intl

Jan 25

DEN7:45 amDenver Intl

2h 21m

BOI10:06 amBoise Air Term. Gowen Fld

$197

Find similar

Delta flights from Idaho to Denver

Our best Delta deals on Idaho to Denver flight tickets

Delta

Jan 13

GEG11:25 amSpokane

5h 09m

1 stop

DEN5:34 pmDenver Intl

Jan 20

DEN6:50 pmDenver Intl

6h 09m

1 stop

GEG11:59 pmSpokane

$165

Find similar

Delta

Jan 13

GEG7:20 amSpokane

6h 55m

2 stops

DEN3:15 pmDenver Intl

Jan 20

DEN6:50 pmDenver Intl

6h 09m

1 stop

GEG11:59 pmSpokane

$170

Find similar

Delta

Jan 22

BOI5:40 amBoise Air Term. Gowen Fld

6h 47m

1 stop

DEN12:27 pmDenver Intl

Jan 24

DEN1:30 pmDenver Intl

8h 28m

1 stop

BOI9:58 pmBoise Air Term. Gowen Fld

$205

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/23

12:07 pm-2:07 pm

Nonstop2h 00m

Denver Intl

Sun 1/25

9:54 am-9:20 am

1 stop23h 26m

$138

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/23

3:43 pm-11:35 pm

1 stop7h 52m

Denver Intl

Mon 1/26

9:10 am-11:12 am

Nonstop2h 02m

$141

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 2/9

5:55 pm-11:35 pm

1 stop5h 40m

Denver Intl

Thu 2/12

9:41 am-11:51 am

Nonstop2h 10m

$144

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/9

12:07 pm-2:08 pm

Nonstop2h 01m

Denver Intl

Sun 1/11

9:10 am-11:17 am

Nonstop2h 07m

$147

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/9

12:07 pm-2:08 pm

Nonstop2h 01m

Denver Intl

Sun 1/11

9:10 am-11:17 am

Nonstop2h 07m

$148

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 1/23

2:40 pm-4:31 pm

Nonstop1h 51m

Denver Intl

Sun 2/15

8:00 am-9:48 am

Nonstop1h 48m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 5/22

5:57 pm-7:40 pm

Nonstop1h 43m

Denver Intl

Sun 5/24

11:50 am-1:31 pm

Nonstop1h 41m

$202

HaileyDenver

SUN - DEN

SUNDEN

Hailey Sun Valley-Friedman

Fri 2/20

1:41 pm-10:27 pm

2 stops8h 46m

Denver Intl

Sun 2/22

6:40 am-1:01 pm

1 stop6h 21m

$230

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 1/9

2:07 pm-8:53 pm

1 stop6h 46m

Denver Intl

Tue 1/13

6:00 am-1:37 pm

1 stop7h 37m

$239

HaileyDenver

SUN - DEN

SUNDEN

Hailey Sun Valley-Friedman

Fri 2/20

7:25 am-12:00 pm

1 stop4h 35m

Denver Intl

Sun 2/22

6:40 am-1:01 pm

1 stop6h 21m

$327

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 Denver

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 Denver?

The cheapest month to fly to Denver from Idaho is in October. Flight prices, which tend to average around $187, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in October, then you should wait until August to fly from Idaho, when ticket prices are also cheap, with an average price of $221.

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

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $415. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $523.

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

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $242. Flights in the morning are often more expensive with an average ticket price of $472.

What is the cheapest Idaho to Denver Intl flight route?

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

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

You are more likely to see cheaper flights to Denver from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $269 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Idaho for as low as $174 on momondo.

What cabin class options are available on Idaho to Denver Intl flights?

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

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

Cheap Idaho to Denver flight deals and tips

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

Best Price Found	$124
Fastest flight time	1h 32m
Direct flights	Every day
Airports in Denver	1 airport

The best one-way flight to Denver from Idaho in the past 72 hours is $124. The best round-trip flight deal from Idaho to Denver found on momondo in the last 72 hours is $323.

The fastest flight from Idaho to Denver takes 1h 32m

Direct flights go from Idaho to Denver every day.

There is 1 airport in Denver. From Idaho there are direct flights to Denver Intl (DEN).

Search flight deals

When did momondo last update prices for flights from Idaho to Denver Intl Airport?
Prices for flights from Idaho to Denver Intl Airport are updated daily.
How many operators does momondo search for flights from Idaho to Denver Intl Airport?
There are 6 operators available for flights from Idaho to Denver Intl Airport as of December 2025.
How old do you have to be to fly from Idaho to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Idaho to Denver?
momondo data reveals that the most frequently booked plane model on the route from Idaho to Denver is Embraer 175 (Enhanced Winglets), representing 17.30% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 700 at 15.25%, Boeing 737-900 at 13.07%, and Boeing 737-700 Passenger/BBJ1 (winglets) at 8.76%.

Best airlines flying from Idaho to Denver

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

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $54	Free Cancellation	Rating 7.2 703 reviews	Search Allegiant Air flights
Frontier	PriceFrom $58	Free Cancellation	Rating 5.8 3,070 reviews	Search Frontier flights
Delta	PriceFrom $136	Free Cancellation	Rating 7.9 8,021 reviews	Search Delta flights
Alaska Airlines	PriceFrom $154	Free Cancellation	Rating 8.0 11,547 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $176	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Southwest	PriceFrom $191	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights

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Cripple Creek

Manitou Springs

Longmont

Boulder

Greeley

Lakewood

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Westminster

Winter Park

Copper Mountain

Frisco

Silverthorne

Centennial

Grand Lake

Why use momondo?

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

It is quick and easy to find Idaho to Denver 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 Denver that suits you.

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

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

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

Once all potential Idaho to Denver 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 Idaho to Denver right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Idaho to Denver now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Denver and let you know when they change.

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Cheap flights from Idaho to Denver 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 Idaho to Denver departing on 1/23. 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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Find the cheapest flights from Idaho to Denver

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United Airlines flights from Idaho to Denver

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How to get the cheapest flight ticket from Idaho to Denver

What is the cheapest month to fly to Denver?

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

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $415. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $523.

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

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $242. Flights in the morning are often more expensive with an average ticket price of $472.

What is the cheapest Idaho to Denver Intl flight route?

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

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

What cabin class options are available on Idaho to Denver Intl flights?

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

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

What is the cheapest airline that flies from Idaho to Denver Intl?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Idaho to Denver Intl

What airlines fly to Denver?

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

The number of flights available between Idaho and Denver is 34 per day as of December 2025. The most frequent departure time is 2:00PM, with 45% of daily flights leaving in the afternoon.

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

239 flights are operational weekly from Idaho to Denver as of December 2025. The most popular departure day for this route is Sat, with 17% of flights per week taking off on this day.

How long does it take to fly to Denver?

Cheap Idaho to Denver flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

When did momondo last update prices for flights from Idaho to Denver Intl Airport?

How many operators does momondo search for flights from Idaho to Denver Intl Airport?

How old do you have to be to fly from Idaho to Denver Intl Airport?

What documentation or ID do you need to fly to Denver Intl Airport?

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

Best airlines flying from Idaho to Denver

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

Traveling to a place near Denver?

Why use momondo?

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

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

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

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

An easier way to manage your Denver 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 the United States

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