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Idaho

$28+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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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 October 14, 2025.

This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:00 amDEN - GEG
1 stop9h 40mFrontier
Thu 12/1112:23 pmGEG - DEN
Nonstop2h 42mFrontier
Deal found 10/12$108
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:00 amDEN - GEG
1 stop9h 40mFrontier
Sun 12/1412:23 pmGEG - DEN
Nonstop2h 42mFrontier
Deal found 10/12$115
This Mytrip deal was found by Cheapflights users on 10/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/69:48 amDEN - GEG
Nonstop2h 20mFrontier
Sun 11/912:03 pmGEG - DEN
Nonstop2h 16mFrontier
Deal found 10/13$119
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:48 amDEN - GEG
Nonstop2h 20mFrontier
Sun 11/1612:03 pmGEG - DEN
Nonstop2h 16mFrontier
Deal found 10/12$121
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/79:57 amDEN - GEG
Nonstop2h 31mFrontier
Sun 12/1412:23 pmGEG - DEN
Nonstop2h 42mFrontier
Deal found 10/12$122
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:48 amDEN - GEG
Nonstop2h 20mFrontier
Sun 11/212:03 pmGEG - DEN
Nonstop2h 16mFrontier
Deal found 10/12$123
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/79:57 amDEN - GEG
Nonstop2h 31mFrontier
Thu 12/114:35 pmGEG - DEN
1 stop6h 30mFrontier
Deal found 10/12$126
This Trip.com deal was found by Cheapflights users on 10/13. 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.
Thu 11/133:37 pmDEN - BOI
1 stop8h 17mMultiple Airlines
Sun 11/1612:28 pmBOI - DEN
Nonstop2h 00mMultiple Airlines
Deal found 10/13$138
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:53 amDEN - BOI
Nonstop1h 55mMultiple Airlines
Tue 11/115:54 amBOI - DEN
1 stop4h 41mMultiple Airlines
Deal found 10/12$140
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:53 amDEN - BOI
Nonstop1h 55mFrontier
Sun 11/1612:28 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 10/12$144
This Orbitz deal was found by Cheapflights users on 10/12. 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.
Wed 12/36:45 amDEN - BOI
1 stop8h 41mMultiple Airlines
Fri 12/512:59 pmBOI - DEN
Nonstop2h 01mMultiple Airlines
Deal found 10/12$148
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:48 amDEN - GEG
Nonstop2h 20mFrontier
Sun 10/2611:53 amGEG - DEN
Nonstop2h 26mFrontier
Deal found 10/12$148

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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$108
(Frontier)

One-way from

$28
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$271

Good round-trip deal

$167 or less

Good one-way deal

$125 or less
Provider with most accurate pricing for Denver Intl-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Boise Air Term. Gowen Fld flights.
Search Deals
From Denver Intl to Idaho
Search Deals
One-way flight from Denver Intl to Idaho
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Denver Intl to Idaho.
Search Deals
Price to beat on a one-way flight from Denver Intl to Idaho.
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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 October 14, 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

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Sat 12/6

12:25 pm-6:56 pm

1 stop7h 31m

Spokane

Sun 12/7

5:05 am-11:32 am

1 stop5h 27m

$165

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Mon 11/10

12:02 pm-9:01 pm

2 stops9h 59m

Spokane

Mon 11/17

1:10 pm-6:55 pm

1 stop4h 45m

$170

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 11/6

11:59 am-9:05 pm

2 stops10h 06m

Spokane

Thu 11/27

1:10 pm-9:46 pm

1 stop7h 36m

$170

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sun 11/16

7:55 am-10:00 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Sun 11/16

5:40 pm-7:30 pm

Nonstop1h 50m

$177

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 1/15

12:20 pm-8:13 pm

1 stop7h 53m

Boise Air Term. Gowen Fld

Sun 1/18

6:00 pm-11:22 pm

1 stop5h 22m

$185

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sun 11/16

7:55 am-10:00 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Wed 11/19

2:40 pm-4:30 pm

Nonstop1h 50m

$187

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Mon 2/23

7:45 am-9:28 am

Nonstop1h 43m

Idaho Falls Fanning Field

Tue 3/3

2:35 pm-4:24 pm

Nonstop1h 49m

$189

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Sun 11/9

9:48 am-11:08 am

Nonstop2h 20m

Spokane

Sun 11/16

9:16 pm-6:28 pm

2 stops20h 12m

$192

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 11/13

6:46 pm-11:59 pm

1 stop5h 13m

Boise Air Term. Gowen Fld

Sun 11/16

6:28 am-11:59 pm

1 stop17h 31m

$196

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Wed 12/10

6:45 am-12:39 pm

1 stop6h 54m

Spokane

Tue 12/16

9:00 am-6:03 pm

1 stop8h 03m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 60 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, May is the cheapest month in which you can book a flight from Denver to Idaho (average of $37). Flying from Denver to Idaho in December is currently the most expensive (average of $241). 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 October 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Denver to Idaho in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Denver to Idaho?

Use this chart to determine the cheapest time to fly round-trip from Denver to Idaho. Price data was last updated on October 12, 2025.

Travelers seeking maximum savings on their Denver to Idaho flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 14, 2025.

The most flights from DEN to USID are scheduled on a Monday (15 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 October 14, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines 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.
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,972 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,975 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Allegiant Air
7.2
Good
693 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,136 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 9 times in the past calendar month.

  • How long is the flight from Denver to Idaho?

    For as low as $189, Delta can have you in Idaho from Denver in 1h 43m. The distance from Denver to Idaho is about 457 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $88. However, be on the lookout for offers from Delta and American 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 - Boise Air Term. Gowen Fld, Denver Intl - Spokane 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 (78%) or Air Canada (78%) 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 $213 for a flight from Denver to Idaho. The cheapest flight overall is $66 while the most popular route, (Denver Intl - Boise Air Term. Gowen Fld) is currently priced at $133.

  • 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, May is the cheapest month in which you can book a flight from Denver to Idaho (average of $37). Flying from Denver to Idaho in December is currently the most expensive (average of $241). 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 5 airlines flying from Denver to Idaho

Discover the top 5 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$44Average$88FlexibilityNo cancel feeOn-time88%
FrontierCheapest$62Average$136FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$425FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$194Average$366FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$289FlexibilityNo cancel feeOn-time63%

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