HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
abr. 2 — abr. 91
mié. 4/2
mié. 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Idaho with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 marzo 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$97
(Cheapflightsfares)

One-way from

$42
(Cheapflightsfares)

Popular in

December

Cheapest in

July

Average price

$296

Good round-trip deal

$231 or less

Good one-way deal

$123 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. 15% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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.
Search Deals

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 marzo 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/193:20 pmDEN - IDA
Nonstop1h 44mAllegiant Air
dom. 6/225:49 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Deal found 3/27$97
This CheapOair deal was found by Cheapflights users on 3/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/279:42 amDEN - GEG
Nonstop2h 22mFrontier
jue. 5/2911:49 amGEG - DEN
Nonstop2h 18mFrontier
Deal found 3/27$170
This United Airlines deal was found by Cheapflights users on 3/25. 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. 5/811:20 amDEN - WYS
Nonstop1h 52mUnited Airlines
dom. 5/111:51 pmWYS - DEN
Nonstop1h 48mUnited Airlines
Deal found 3/25$190
This Southwest deal was found by Cheapflights users on 3/26. 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.
lun. 4/219:35 pmDEN - BOI
Nonstop1h 55mSouthwest
mar. 4/224:20 pmBOI - DEN
Nonstop1h 55mSouthwest
Deal found 3/26$197
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/912:45 pmDEN - GEG
1 stop4h 19mDelta
mar. 7/151:00 pmGEG - DEN
1 stop7h 41mDelta
Deal found 3/27$197
This Hawaiian Airlines deal was found by Cheapflights users on 3/25. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/16:37 pmDEN - BOI
1 stop5h 22mHawaiian Airlines
sáb. 5/36:41 pmBOI - DEN
1 stop5h 18mHawaiian Airlines
Deal found 3/25$206
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
jue. 7/246:00 amDEN - GEG
1 stop7h 28mAlaska Airlines
mar. 7/296:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Deal found 3/27$206
This flugladen.de deal was found by Cheapflights users on 3/26. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/157:05 pmDEN - BOI
1 stop4h 54mMultiple Airlines
dom. 5/182:27 pmBOI - DEN
Nonstop1h 59mMultiple Airlines
Deal found 3/26$209
This CheapOair deal was found by Cheapflights users on 3/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/269:50 amDEN - BOI
Nonstop1h 57mFrontier
mar. 7/112:36 pmBOI - DEN
Nonstop1h 58mFrontier
Deal found 3/27$215
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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. 4/237:00 amDEN - BOI
1 stop6h 47mAlaska Airlines
dom. 4/276:03 amBOI - DEN
1 stop4h 48mAlaska Airlines
Deal found 3/25$216
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/16:30 amDEN - BOI
1 stop6h 50mDelta
jue. 7/33:43 pmBOI - DEN
1 stop8h 06mDelta
Deal found 3/26$217
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/66:00 amDEN - GEG
1 stop7h 45mMultiple Airlines
mar. 6/1011:48 amGEG - DEN
Nonstop2h 21mMultiple Airlines
Deal found 3/27$223

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 marzo 28, 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. 6/19

3:20 pm-5:04 pm

Nonstop1h 44m

Idaho Falls Fanning Field

dom. 6/22

5:49 pm-7:37 pm

Nonstop1h 48m

$97

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 5/27

9:42 am-11:04 am

Nonstop2h 22m

Spokane

jue. 5/29

11:49 am-3:07 pm

Nonstop2h 18m

$170

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

jue. 5/8

11:20 am-1:12 pm

Nonstop1h 52m

West Yellowstone

dom. 5/11

1:51 pm-3:39 pm

Nonstop1h 48m

$190

DenverBoise

DEN - BOI

DENBOI

Denver Intl

lun. 4/21

9:35 pm-11:30 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

mar. 4/22

4:20 pm-6:15 pm

Nonstop1h 55m

$197

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 5/1

6:37 pm-11:59 pm

1 stop5h 22m

Boise Air Term. Gowen Fld

sáb. 5/3

6:41 pm-11:59 pm

1 stop5h 18m

$206

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

mar. 5/27

5:30 am-8:55 am

1 stop4h 25m

Spokane

jue. 5/29

9:16 am-5:50 pm

1 stop7h 34m

$207

DenverBoise

DEN - BOI

DENBOI

Denver Intl

jue. 5/15

7:05 pm-11:59 pm

1 stop4h 54m

Boise Air Term. Gowen Fld

dom. 5/18

2:27 pm-4:26 pm

Nonstop1h 59m

$209

DenverBoise

DEN - BOI

DENBOI

Denver Intl

mié. 4/23

7:00 am-1:47 pm

1 stop6h 47m

Boise Air Term. Gowen Fld

dom. 4/27

6:03 am-10:51 am

1 stop4h 48m

$216

DenverBoise

DEN - BOI

DENBOI

Denver Intl

vie. 5/23

5:30 am-10:06 am

1 stop4h 36m

Boise Air Term. Gowen Fld

mar. 5/27

5:40 pm-10:30 pm

1 stop4h 50m

$217

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

vie. 6/6

6:00 am-12:45 pm

1 stop7h 45m

Spokane

mar. 6/10

11:48 am-3:09 pm

Nonstop2h 21m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 56 results
1
2
3
...
6

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 $421). 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 marzo 28, 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.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 marzo 28, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Denver to Idaho to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 3 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 Alaska 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 (88%), United Airlines (87%) or Air Canada (83%) 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 $251 for a flight from Denver to Idaho. The cheapest flight overall is $69 while the most popular route, (Denver Intl - Boise Air Term. Gowen Fld) is currently priced at $168.

  • 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 $421). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to John F Kennedy Intl flights
Denver to Newark flights
Denver to LaGuardia flights
Denver to Dallas/Fort Worth flights
Denver to Seattle flights
Denver to Sky Harbor Intl flights
Denver to Orlando flights
Denver to Hobby flights
Denver to O'Hare Intl flights
Denver to Reagan-National flights
Denver to San Diego flights
Denver to Dulles Intl flights
Denver to Los Angeles flights
Denver to Miami flights
Denver to Honolulu flights
Denver to San Francisco flights
Denver to Tampa flights
Denver to George Bush Intcntl flights
Denver to Austin flights
Denver to New Orleans flights
Denver to Boston flights
Denver to Atlanta flights
Denver to Baltimore flights
Denver to Nashville flights
Denver to Ontario flights
Denver to Charleston flights
Denver to Philadelphia flights
Denver to Detroit flights
Denver to Raleigh flights
Denver to Portland flights
Denver to Charlotte flights
Denver to Minneapolis flights
Denver to Fort Lauderdale flights
Denver to Kahului flights
Denver to Midway flights
Denver to Anchorage flights
Denver to Salt Lake City flights
Denver to Fort Myers flights
Denver to Grand Rapids flights
Denver to Santa Ana flights
Denver to Cincinnati flights
Denver to Indianapolis flights
Denver to Lihue flights
Denver to Kailua-Kona flights
Denver to Cleveland flights
Denver to Pittsburgh flights
Denver to Sacramento flights
Denver to Milwaukee flights
Denver to St. Louis flights

Top 4 airlines flying from Denver to Idaho

Discover the top 4 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 marzo 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$354FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$182Average$407FlexibilityNo cancel feeOn-time75%
DeltaCheapest$193Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$197Average$289FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.