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

Allegiant Air, Frontier, and Hawaiian Airlines are the most popular carriers operating from Denver Intl to Idaho

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

As of August 2025, 269 flights take off from Denver and land in Idaho each week. The most common flight departure day for this route is Fri, with 17% of weekly flights taking off on this day.

What airlines fly to Idaho?

United Airlines, Southwest and Frontier are the top three most popular airlines that fly to Idaho from Denver according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 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 Denver to Idaho on average per day?

The number of flights available between Denver and Idaho is 38 per day as of August 2025. The most frequent departure time is 7:00PM, with 42% of daily flights leaving in the evening.

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

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

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

The number of operators available for flights from Denver Intl Airport to Idaho is 6 as of August 2025.

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

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 Denver Intl Airport to Idaho.

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

The travel and health documents you'll need for your trip to Idaho 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 Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$46 Cheap Flights from Denver to Idaho in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Denver to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:24 pm - 5:06 pmDEN-IDA

1h 42mnonstop

5:51 pm - 7:39 pmIDA-DEN

1h 48mnonstop

$84Allegiant Air

Find Deal

Sun, Aug 17 - Thu, Aug 21

9:45 am - 11:06 amDEN-GEG

2h 21mnonstop

11:58 am - 3:31 pmGEG-DEN

2h 33mnonstop

$130Frontier

Find Deal

Tue, Aug 12 - Sun, Aug 17

8:00 am - 3:00 pmDEN-BOI

7h 00m1 stop

4:34 pm - 10:02 pmBOI-DEN

5h 28m1 stop

$198Alaska Airlines

Find Deal

Tue, Sep 2 - Tue, Sep 9

3:00 pm - 11:22 pmDEN-BOI

8h 22m1 stop

5:54 am - 10:35 amBOI-DEN

4h 41m1 stop

$199Alaska Airlines

Find Deal

Wed, Oct 22 - Mon, Oct 27

7:55 am - 9:50 amDEN-BOI

1h 55mnonstop

8:45 am - 3:30 pmBOI-DEN

6h 45m1 stop

$209Southwest

Find Deal

Sat, Aug 23 - Wed, Aug 27

6:25 pm - 9:29 pmDEN-JAC

3h 04m1 stop

7:30 am - 12:00 pmJAC-DEN

4h 30m1 stop

$209Delta

Find Deal

Thu, Sep 11 - Thu, Sep 18

5:45 am - 8:46 amDEN-IDA

3h 01m1 stop

3:00 pm - 7:46 pmIDA-DEN

4h 46m1 stop

$209Delta

Find Deal

Thu, Aug 21 - Tue, Sep 9

1:00 pm - 2:50 pmDEN-BOI

1h 50mnonstop

7:25 am - 2:05 pmBOI-DEN

6h 40m2 stops

$214Southwest

Find Deal

Sat, Aug 23 - Wed, Aug 27

8:20 pm - 10:21 pmDEN-BOI

2h 01mnonstop

5:00 am - 7:05 amBOI-DEN

2h 05mnonstop

$215United Airlines

Find Deal

Fri, Aug 22 - Tue, Aug 26

4:15 pm - 5:42 pmDEN-JAC

1h 27mnonstop

4:20 pm - 5:56 pmJAC-DEN

1h 36mnonstop

$219United Airlines

Find Deal

Thu, Sep 11 - Thu, Sep 18

Frontier flights from Denver to Idaho

Our best Frontier deals on Denver to Idaho flight tickets

Frontier

Aug 12

DEN9:45 amDenver Intl

2h 21m

GEG11:06 amSpokane

Aug 17

GEG11:58 amSpokane

2h 33m

DEN3:31 pmDenver Intl

$130

Find similar

Frontier

Aug 12

DEN9:45 amDenver Intl

2h 21m

GEG11:06 amSpokane

Aug 17

GEG11:58 amSpokane

2h 33m

DEN3:31 pmDenver Intl

$135

Find similar

Frontier

Aug 14

DEN9:42 amDenver Intl

2h 21m

GEG11:03 amSpokane

Aug 17

GEG11:58 amSpokane

2h 33m

DEN3:31 pmDenver Intl

$144

Find similar

Alaska Airlines flights from Denver to Idaho

Our best Alaska Airlines deals on Denver to Idaho flight tickets

Alaska Airlines

Sep 2

DEN8:00 amDenver Intl

7h 00m

1 stop

BOI3:00 pmBoise Air Term. Gowen Fld

Sep 9

BOI4:34 pmBoise Air Term. Gowen Fld

5h 28m

1 stop

DEN10:02 pmDenver Intl

$198

Find similar

Alaska Airlines

Oct 22

DEN3:00 pmDenver Intl

8h 22m

1 stop

BOI11:22 pmBoise Air Term. Gowen Fld

Oct 27

BOI5:54 amBoise Air Term. Gowen Fld

4h 41m

1 stop

DEN10:35 amDenver Intl

$199

Find similar

Alaska Airlines

Sep 2

DEN6:17 pmDenver Intl

5h 51m

1 stop

BOI12:08 amBoise Air Term. Gowen Fld

Sep 16

BOI10:00 amBoise Air Term. Gowen Fld

7h 21m

1 stop

DEN5:21 pmDenver Intl

$207

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Sun 8/17

3:24 pm-5:06 pm

Nonstop1h 42m

Idaho Falls Fanning Field

Thu 8/21

5:51 pm-7:39 pm

Nonstop1h 48m

$84

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Tue 8/12

9:45 am-11:06 am

Nonstop2h 21m

Spokane

Sun 8/17

11:58 am-3:31 pm

Nonstop2h 33m

$130

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Tue 9/2

8:00 am-3:00 pm

1 stop7h 00m

Boise Air Term. Gowen Fld

Tue 9/9

4:34 pm-10:02 pm

1 stop5h 28m

$198

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 10/22

3:00 pm-11:22 pm

1 stop8h 22m

Boise Air Term. Gowen Fld

Mon 10/27

5:54 am-10:35 am

1 stop4h 41m

$199

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 8/23

7:55 am-9:50 am

Nonstop1h 55m

Boise Air Term. Gowen Fld

Wed 8/27

8:45 am-3:30 pm

1 stop6h 45m

$209

DenverJackson

DEN - JAC

DENJAC

Denver Intl

Thu 9/11

6:25 pm-9:29 pm

1 stop3h 04m

Jackson Hole

Thu 9/18

7:30 am-12:00 pm

1 stop4h 30m

$209

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 8/21

5:45 am-8:46 am

1 stop3h 01m

Idaho Falls Fanning Field

Tue 9/9

3:00 pm-7:46 pm

1 stop4h 46m

$209

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 8/23

1:00 pm-2:50 pm

Nonstop1h 50m

Boise Air Term. Gowen Fld

Wed 8/27

7:25 am-2:05 pm

2 stops6h 40m

$214

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Fri 8/22

8:20 pm-10:21 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Tue 8/26

5:00 am-7:05 am

Nonstop2h 05m

$215

DenverJackson

DEN - JAC

DENJAC

Denver Intl

Thu 9/11

4:15 pm-5:42 pm

Nonstop1h 27m

Jackson Hole

Thu 9/18

4:20 pm-5:56 pm

Nonstop1h 36m

$219

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 Denver 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, May is the cheapest month to fly from Denver to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $252. If you don’t want to visit Idaho in May, then you should wait until April to fly from Denver, when ticket prices are also cheap, with an average price of $257.

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

Our data shows that Sunday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $227. On the other hand, Monday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $387.

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 Denver to Idaho in the morning for as low as $275. 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 $329 per ticket.

What is the cheapest Denver Intl to Idaho flight route?

Fly from Denver Intl to Idaho Falls Fanning Field for the best Denver Intl - 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 Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $301 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Denver for as low as $201 on momondo.

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

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

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

Cheap Denver to Idaho flight deals and tips

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

Best Price Found	$46
Fastest flight time	1h 27m
Direct flights	Every day
Airports in Idaho	6 airports

The best one-way flight to Idaho from Denver in the past 72 hours is $46. The best round-trip flight deal from Denver to Idaho found on momondo in the last 72 hours is $84.

The fastest flight from Denver to Idaho takes 1h 27m

Direct flights go from Denver to Idaho every day.

There are 6 airports near Idaho: West Yellowstone (WYS), Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC), Hailey Sun Valley-Friedman (SUN)

Search flight deals

When did momondo last update prices for flights from Denver Intl Airport to Idaho?
Prices for flights from Denver Intl Airport to Idaho are updated daily.
How many operators does momondo search for flights from Denver Intl Airport to Idaho?
The number of operators available for flights from Denver Intl Airport to Idaho is 6 as of August 2025.
How old do you have to be to fly from Denver Intl Airport to Idaho?
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 Denver Intl Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho 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 Idaho. 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 Denver to Idaho?
Based on momondo bookings for flights between Denver and Idaho, the leading plane model is Canadair (Bombardier) Regional Jet 700, making up 16.71% of the total bookings. Other popular models include Boeing 737-900 with 14.65%, Boeing 737-800 with 13.84%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 12.87%.

Best airlines flying from Denver to Idaho

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

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $44	Free Cancellation	Rating 7.2 702 reviews	Search Allegiant Air flights
Frontier	PriceFrom $73	Free Cancellation	Rating 5.8 3,237 reviews	Search Frontier flights
Delta	PriceFrom $98	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
Alaska Airlines	PriceFrom $168	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $199	Free Cancellation	Rating 7.4 8,905 reviews	Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Denver to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Denver to Idaho flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Idaho from Denver. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Idaho, momondo offers a useful price alert feature which will track prices for flights to Idaho from Denver and alert you when they 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 8/7

Thu 8/14

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Idaho

Popular cities in Idaho

Flights to New Yorkfrom $48

Flights to Los Angelesfrom $37

Flights to Miamifrom $58

Flights to Chicagofrom $58

Flights to Orlandofrom $54

Flights to Las Vegasfrom $30

Flights to San Franciscofrom $61

Flights to Washington, D.C.from $48

Flights to Bostonfrom $67

Flights to Atlantafrom $39

Flights to Dallasfrom $55

Flights to Seattlefrom $94

Cheap flights from Denver to Idaho 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 Denver to Idaho departing on 8/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Denver to Idaho

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Frontier flights from Denver to Idaho

Our best Frontier deals on Denver to Idaho flight tickets

Alaska Airlines flights from Denver to Idaho

Our best Alaska Airlines deals on Denver to Idaho flight tickets

momondo Fare Finder

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

See travel insights to Idaho from

How to get the cheapest flight ticket from Denver 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

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 Denver Intl to Idaho flight route?

Fly from Denver Intl to Idaho Falls Fanning Field for the best Denver Intl - Idaho flight prices

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

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

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

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

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

Allegiant Air, Frontier, and Hawaiian Airlines are the most popular carriers operating from Denver Intl to Idaho

What airlines fly to Idaho?

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

The number of flights available between Denver and Idaho is 38 per day as of August 2025. The most frequent departure time is 7:00PM, with 42% of daily flights leaving in the evening.

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

As of August 2025, 269 flights take off from Denver and land in Idaho each week. The most common flight departure day for this route is Fri, with 17% of weekly flights taking off on this day.

Cheap Denver to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

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

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

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

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

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

Best airlines flying from Denver to Idaho

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

Why use momondo?

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

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

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

I’m not ready to book a flight from Denver 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