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Idaho

$42+ Cheap flights from Denver (DEN) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheap flight deals from Denver to Idaho

Keep the following information in mind while searching for Denver to Idaho flight deals. Data was last updated julio 3, 2025.

Round-trip from

$84
(Mytrip)

One-way from

$42
(Mytrip)

Popular in

December

Cheapest in

May

Average price

$271

Good round-trip deal

$90 or less

Good one-way deal

$90 or less
From Denver Intl to Idaho
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One-way flight from Denver Intl to Idaho
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Highest demand for flights based on searches. 18% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Denver Intl to Idaho.
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Price to beat on a one-way flight from Denver Intl to Idaho.
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Find flight deals from Denver to Idaho

Cheapest flights from Denver to Idaho
Explore the most affordable flight options available from Denver to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

This Gotogate deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/173:20 pmDEN - IDA
Nonstop1h 44mAllegiant Air
jue. 7/245:49 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Deal found 7/3$84
This Priceline deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/59:45 amDEN - GEG
Nonstop2h 21mFrontier
mar. 8/1211:51 amGEG - DEN
Nonstop2h 33mFrontier
Deal found 7/1$108
This Priceline deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/149:50 amDEN - BOI
Nonstop1h 56mFrontier
dom. 8/1712:36 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 6/30$114
This Orbitz deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/79:50 amDEN - BOI
Nonstop1h 56mMultiple Airlines
mié. 8/133:10 pmBOI - DEN
1 stop6h 37mMultiple Airlines
Deal found 7/2$172
This Orbitz deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/259:38 amDEN - GEG
Nonstop2h 20mMultiple Airlines
mar. 9/309:25 amGEG - DEN
1 stop6h 56mMultiple Airlines
Deal found 7/1$172
This Alaska Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/56:00 amDEN - GEG
1 stop7h 29mAlaska Airlines
mar. 8/126:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Deal found 7/1$176
This Trip.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/21:06 pmDEN - BOI
1 stop5h 10mHawaiian Airlines
lun. 10/67:21 amBOI - DEN
1 stop6h 39mHawaiian Airlines
Deal found 7/1$192
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/49:05 pmDEN - IDA
Nonstop1h 43mUnited Airlines
mié. 9/105:56 pmIDA - DEN
Nonstop1h 44mUnited Airlines
Deal found 7/3$194
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/36:17 pmDEN - BOI
1 stop5h 51mAlaska Airlines
mar. 9/164:34 pmBOI - DEN
1 stop5h 13mAlaska Airlines
Deal found 7/2$196
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/29:55 amDEN - BOI
Nonstop2h 00mSouthwest
lun. 10/65:40 pmBOI - DEN
Nonstop1h 50mSouthwest
Deal found 7/1$197
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/257:00 pmDEN - GEG
Nonstop2h 24mUnited Airlines
lun. 9/295:15 amGEG - DEN
Nonstop2h 18mUnited Airlines
Deal found 6/30$197
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/209:10 pmDEN - GEG
Nonstop2h 20mSouthwest
dom. 8/245:45 amGEG - DEN
Nonstop2h 15mSouthwest
Deal found 7/2$207

Cheapflights Fare Finder

Customize your flight search to find flights from Denver to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 3, 2025.
Use the filters below to find and compare flights from Denver to Idaho that are best for you.

Fly from

Denver

Fly to

Idaho

Route

Depart

Return

Price

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

jue. 7/17

3:20 pm-5:04 pm

Nonstop1h 44m

Idaho Falls Fanning Field

jue. 7/24

5:49 pm-7:37 pm

Nonstop1h 48m

$84

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 8/5

9:45 am-11:06 am

Nonstop2h 21m

Spokane

mar. 8/12

11:51 am-3:24 pm

Nonstop2h 33m

$108

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 8/14

9:50 am-11:46 am

Nonstop1h 56m

Boise Air Term. Gowen Fld

dom. 8/17

12:36 pm-2:36 pm

Nonstop2h 00m

$114

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 8/7

9:50 am-11:46 am

Nonstop1h 56m

Boise Air Term. Gowen Fld

mié. 8/13

3:10 pm-9:47 pm

1 stop6h 37m

$172

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

jue. 9/25

9:38 am-10:58 am

Nonstop2h 20m

Spokane

mar. 9/30

9:25 am-5:21 pm

1 stop6h 56m

$172

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 8/5

6:00 am-12:29 pm

1 stop7h 29m

Spokane

mar. 8/12

6:07 pm-11:59 pm

1 stop4h 52m

$176

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

jue. 9/4

9:05 pm-10:48 pm

Nonstop1h 43m

Idaho Falls Fanning Field

mié. 9/10

5:56 pm-7:40 pm

Nonstop1h 44m

$194

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mié. 9/3

6:17 pm-12:08 am

1 stop5h 51m

Boise Air Term. Gowen Fld

mar. 9/16

4:34 pm-9:47 pm

1 stop5h 13m

$196

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 8/7

7:45 am-9:46 am

Nonstop2h 01m

Boise Air Term. Gowen Fld

mié. 8/13

10:45 am-12:45 pm

Nonstop2h 00m

$197

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

jue. 9/25

7:00 pm-8:24 pm

Nonstop2h 24m

Spokane

lun. 9/29

5:15 am-8:33 am

Nonstop2h 18m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 59 results
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Best time to book a flight from Denver to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Idaho

What is the cheapest month to book a flight from Denver to Idaho?

Currently, October is the cheapest month in which you can book a flight from Denver to Idaho (average of $314). Flying from Denver to Idaho in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to ID?

Find hourly flight availability from Denver to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Idaho as you normally would.

Weekly flight availability from Denver to Idaho

Explore weekly flight availability from Denver to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated julio 3, 2025.

The most flights from DEN to USID are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated julio 3, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Denver to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,270 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Denver to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Idaho?

    Located just 18.5 mi from the city center, Denver Intl (DEN) is the airport most travelers will use when flying to Idaho from Denver.

  • How popular is this Denver to Idaho flight route?

    Flights from Denver Intl to Idaho have been viewed 7 times in the past calendar month.

  • What are the cheapest airlines to fly from Denver to Idaho one-way?

    The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $42. However, be on the lookout for offers from Frontier and Hawaiian Airlines, as they are both options that can get you from Denver to Idaho for a low price.

  • What are the most popular routes from Denver to Idaho?

    Most travelers choose Denver Intl - Spokane, Denver Intl - Boise Air Term. Gowen Fld or Denver Intl - Jackson Hole when deciding on the best route from Denver to Idaho.

  • What are the most reliable airlines from Denver to Idaho?

    Consider SkyWest Airlines (78%), United Airlines (77%) or Air Canada (71%) when booking your flight. These represent the most reliable airlines when flying from Denver to Idaho.

  • What are the cheapest flights from Denver to Idaho?

    On average you can expect to pay $208 for a flight from Denver to Idaho. The cheapest flight overall is $79 while the most popular route, (Denver Intl - Spokane) is currently priced at $157.

  • Can I find deals for flights from Denver to Idaho that include hotel bookings?

    Yes. In addition to deals on Denver to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Idaho.

  • Can I find deals for business class flights from Denver to Idaho?

    Yes. Cheapflights offers flight deals from Denver to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Denver to Idaho (average of $314). Flying from Denver to Idaho in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Denver to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Denver to Idaho

Discover the top 6 airlines that operate flights from Denver to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$42Average$89FlexibilityNo cancel feeOn-time88%
FrontierCheapest$69Average$141FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$419FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$168Average$235FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$189Average$363FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$292FlexibilityNo cancel feeOn-time63%

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