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 64% 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?

153 flights are operational weekly from Idaho to Denver as of September 2025. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

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

The number of flights available between Idaho and Denver is 21 per day as of September 2025. The most frequent departure time is 2:00PM, with 48% of daily flights leaving in the afternoon.

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

Frontier, Alaska Airlines, 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 Idaho Falls to Denver takes 1h 44m on average. On the other hand, flying from Boise to Denver takes 1h 50m 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.

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 September 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.

$46 Cheap Flights from Idaho to Denver in 2025/26

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Find the cheapest flights from Idaho to Denver

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:28 pm - 2:28 pmBOI-DEN

2h 00mnonstop

9:48 am - 11:43 amDEN-BOI

1h 55mnonstop

$99Frontier

Find Deal

Thu, Oct 23 - Sun, Oct 26

12:03 pm - 3:19 pmGEG-DEN

2h 16mnonstop

9:48 am - 11:08 amDEN-GEG

2h 20mnonstop

$101Frontier

Find Deal

Thu, Oct 23 - Thu, Oct 30

7:13 am - 2:00 pmBOI-DEN

6h 47m1 stop

9:53 am - 11:48 amDEN-BOI

1h 55mnonstop

$154Multiple Airlines

Find Deal

Fri, Oct 24 - Thu, Oct 30

6:30 am - 11:53 amBOI-DEN

5h 23m1 stop

9:48 am - 11:43 amDEN-BOI

1h 55mnonstop

$164Multiple Airlines

Find Deal

Tue, Oct 14 - Thu, Oct 16

7:13 am - 2:00 pmBOI-DEN

6h 47m1 stop

7:02 pm - 11:57 pmDEN-BOI

4h 55m1 stop

$186Alaska Airlines

Find Deal

Fri, Oct 24 - Fri, Oct 24

5:00 am - 6:56 amIDA-DEN

1h 56mnonstop

8:00 am - 9:48 amDEN-IDA

1h 48mnonstop

$189United Airlines

Find Deal

Tue, Oct 14 - Sun, Oct 19

5:00 am - 6:56 amIDA-DEN

1h 56mnonstop

7:07 pm - 8:52 pmDEN-IDA

1h 45mnonstop

$194United Airlines

Find Deal

Mon, Oct 6 - Wed, Oct 22

6:00 am - 9:29 amBOI-DEN

3h 29m1 stop

5:25 am - 12:20 pmDEN-BOI

6h 55m1 stop

$197Delta

Find Deal

Fri, Oct 31 - Sun, Nov 2

4:57 pm - 11:59 pmBOI-DEN

7h 02m1 stop

8:02 pm - 10:29 amDEN-BOI

14h 27m1 stop

$200Alaska Airlines

Find Deal

Fri, Nov 14 - Mon, Nov 17

6:53 pm - 10:24 pmIDA-DEN

3h 31m1 stop

7:05 am - 12:34 pmDEN-IDA

5h 29m1 stop

$209Delta

Find Deal

Fri, Nov 7 - Sun, Nov 9

Frontier flights from Idaho to Denver

Our best Frontier deals on Idaho to Denver flight tickets

Frontier

Oct 23

BOI12:28 pmBoise Air Term. Gowen Fld

2h 00m

DEN2:28 pmDenver Intl

Oct 26

DEN9:48 amDenver Intl

1h 55m

BOI11:43 amBoise Air Term. Gowen Fld

$99

Find similar

Frontier

Oct 23

GEG12:03 pmSpokane

2h 16m

DEN3:19 pmDenver Intl

Oct 30

DEN9:48 amDenver Intl

2h 20m

GEG11:08 amSpokane

$101

Find similar

Frontier

Oct 23

BOI12:28 pmBoise Air Term. Gowen Fld

2h 00m

DEN2:28 pmDenver Intl

Oct 26

DEN9:48 amDenver Intl

1h 55m

BOI11:43 amBoise Air Term. Gowen Fld

$102

Find similar

Southwest flights from Idaho to Denver

Our best Southwest deals on Idaho to Denver flight tickets

Southwest

Oct 26

BOI10:35 amBoise Air Term. Gowen Fld

1h 50m

DEN12:25 pmDenver Intl

Oct 29

DEN3:20 pmDenver Intl

6h 50m

2 stops

BOI10:10 pmBoise Air Term. Gowen Fld

$202

Find similar

Southwest

Oct 31

BOI2:25 pmBoise Air Term. Gowen Fld

1h 50m

DEN4:15 pmDenver Intl

Nov 3

DEN9:05 pmDenver Intl

2h 05m

BOI11:10 pmBoise Air Term. Gowen Fld

$207

Find similar

Southwest

Nov 15

BOI5:00 amBoise Air Term. Gowen Fld

2h 00m

DEN7:00 amDenver Intl

Nov 16

DEN7:55 amDenver Intl

2h 05m

BOI10:00 amBoise Air Term. Gowen Fld

$214

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 10/23

12:28 pm-2:28 pm

Nonstop2h 00m

Denver Intl

Sun 10/26

9:48 am-11:43 am

Nonstop1h 55m

$99

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 10/23

12:03 pm-3:19 pm

Nonstop2h 16m

Denver Intl

Thu 10/30

9:48 am-11:08 am

Nonstop2h 20m

$101

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 10/24

7:13 am-2:00 pm

1 stop6h 47m

Denver Intl

Thu 10/30

9:53 am-11:48 am

Nonstop1h 55m

$154

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 10/14

6:30 am-11:53 am

1 stop5h 23m

Denver Intl

Thu 10/16

9:48 am-11:43 am

Nonstop1h 55m

$164

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 10/24

7:13 am-2:00 pm

1 stop6h 47m

Denver Intl

Fri 10/24

7:02 pm-11:57 pm

1 stop4h 55m

$186

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 10/14

5:00 am-6:56 am

Nonstop1h 56m

Denver Intl

Sun 10/19

8:00 am-9:48 am

Nonstop1h 48m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Mon 10/6

5:00 am-6:56 am

Nonstop1h 56m

Denver Intl

Wed 10/22

7:07 pm-8:52 pm

Nonstop1h 45m

$194

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 10/31

6:00 am-9:29 am

1 stop3h 29m

Denver Intl

Sun 11/2

5:25 am-12:20 pm

1 stop6h 55m

$197

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 11/14

4:57 pm-11:59 pm

1 stop7h 02m

Denver Intl

Mon 11/17

8:02 pm-10:29 am

1 stop14h 27m

$200

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 11/7

6:53 pm-10:24 pm

1 stop3h 31m

Denver Intl

Sun 11/9

7:05 am-12:34 pm

1 stop5h 29m

$209

Flights are sorted by cheapest round-trip flights first.

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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 August. Flight prices, which tend to average around $229, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in August, then you should wait until May to fly from Idaho, when ticket prices are also cheap, with an average price of $255.

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 $447. 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 Sunday, with ticket prices averaging around $556.

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 afternoon when flights can be purchased for as low as $439. Flights at noon are often more expensive with an average ticket price of $497.

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 $285 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	$163
Fastest flight time	1h 37m
Direct flights	Every day
Airports in Denver	1 airport

The best one-way flight to Denver from Idaho in the past 72 hours is $163. The best round-trip flight deal from Idaho to Denver found on momondo in the last 72 hours is $296.

The fastest flight from Idaho to Denver takes 1h 37m

Direct flights go from Idaho to Denver every day.

There is 1 airport near Denver: 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 September 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 14.66% of all bookings. The subsequent popular models are Boeing 737-900 at 13.27%, Canadair (Bombardier) Regional Jet 700 at 10.81%, and Airbus A319 at 9.77%.

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 7.2 699 reviews	Search Allegiant Air flights
Frontier	PriceFrom $61	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
Delta	PriceFrom $136	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
Alaska Airlines	PriceFrom $154	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $186	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $196	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

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Cripple Creek

Boulder

Manitou Springs

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Lakewood

Greeley

Thornton

Westminster

Winter Park

Copper Mountain

Frisco

Grand Lake

Silverthorne

Central City

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.

An easier way to manage your Denver trip

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Cheap flights from Idaho to Denver from $46

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 10/23. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Idaho to Denver

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Frontier flights from Idaho to Denver

Our best Frontier deals on Idaho to Denver flight tickets

Southwest flights from Idaho to Denver

Our best Southwest deals on Idaho to Denver flight tickets

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Use the filters below to find and compare flights from Idaho to Denver that are best for you.

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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

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 $447. 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 Sunday, with ticket prices averaging around $556.

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 afternoon when flights can be purchased for as low as $439. Flights at noon are often more expensive with an average ticket price of $497.

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?

Frontier, Alaska Airlines, 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 21 per day as of September 2025. The most frequent departure time is 2:00PM, with 48% of daily flights leaving in the afternoon.

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

153 flights are operational weekly from Idaho to Denver as of September 2025. The most popular departure day for this route is Mon, with 25% 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

Airports servicing Colorado