HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$55+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
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

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$197
(Southwest)

One-way from

$99
(United Airlines)

Good round-trip deal

$277 or less

Good one-way deal

$158 or less
From Denver Intl to Idaho
Search Deals
One-way flight from Denver Intl to Idaho
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 January 21, 2025.

This Southwest deal was found by Cheapflights users on 1/21. 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.
Thu 4/109:35 pmDEN - BOI
Nonstop1h 55mSouthwest
Thu 4/175:05 amBOI - DEN
Nonstop1h 55mSouthwest
Deal found 1/21$197
This Delta deal was found by Cheapflights users on 1/21. 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.
Thu 2/135:40 amDEN - BOI
1 stop4h 10mDelta
Mon 2/175:59 pmBOI - DEN
1 stop4h 36mDelta
Deal found 1/21$217
This Delta deal was found by Cheapflights users on 1/20. 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.
Tue 2/45:40 amDEN - LWS
1 stop7h 17mDelta
Sat 2/812:38 pmLWS - DEN
1 stop5h 43mDelta
Deal found 1/20$238
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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.
Sat 3/17:00 amDEN - BOI
1 stop6h 51mAlaska Airlines
Mon 3/32:46 pmBOI - DEN
1 stop9h 03mAlaska Airlines
Deal found 1/20$246
This Delta deal was found by Cheapflights users on 1/20. 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.
Sat 5/247:10 amDEN - WYS
1 stop3h 27mDelta
Tue 5/273:28 pmWYS - DEN
1 stop3h 42mDelta
Deal found 1/20$249
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 2/273:45 pmDEN - BOI
Nonstop2h 05mUnited Airlines
Sun 3/25:30 pmBOI - DEN
Nonstop2h 00mUnited Airlines
Deal found 1/20$257
This Delta deal was found by Cheapflights users on 1/20. 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.
Wed 2/197:50 pmDEN - GEG
1 stop5h 13mDelta
Wed 2/266:15 amGEG - DEN
1 stop5h 11mDelta
Deal found 1/20$263
This Delta deal was found by Cheapflights users on 1/21. 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.
Fri 2/285:40 amDEN - IDA
1 stop6h 50mDelta
Sun 3/26:00 amIDA - DEN
1 stop5h 33mDelta
Deal found 1/21$279
This United deal was found by Cheapflights users on 1/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/128:05 amDEN - JAC
Nonstop1h 43mUnited Airlines
Sat 3/157:00 amJAC - DEN
Nonstop1h 52mUnited Airlines
Deal found 1/21$289
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Sat 5/247:45 amDEN - WYS
Nonstop1h 52mUnited Airlines
Tue 5/271:48 pmWYS - DEN
Nonstop1h 45mUnited Airlines
Deal found 1/20$290
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 4/157:57 pmDEN - GEG
1 stop5h 02mAlaska Airlines
Tue 4/225:49 pmGEG - DEN
1 stop5h 10mAlaska Airlines
Deal found 1/20$292
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/12:20 pmDEN - IDA
1 stop7h 52mAmerican Airlines
Wed 4/27:47 amIDA - DEN
1 stop7h 41mAmerican Airlines
Deal found 1/21$299

Find flights from Denver to Idaho within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 4/10

9:35 pm-11:30 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

Thu 4/17

5:05 am-7:00 am

Nonstop1h 55m

$197

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 2/13

5:40 am-9:50 am

1 stop4h 10m

Boise Air Term. Gowen Fld

Tue 2/18

11:25 am-3:20 pm

1 stop3h 55m

$217

DenverLewiston

DEN - LWS

DENLWS

Denver Intl

Tue 2/4

5:40 am-11:57 am

1 stop7h 17m

Lewiston Nez Perce Rgnl

Sat 2/8

12:38 pm-7:21 pm

1 stop5h 43m

$238

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

Sat 5/24

7:10 am-10:37 am

1 stop3h 27m

West Yellowstone

Tue 5/27

3:28 pm-7:10 pm

1 stop3h 42m

$249

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 2/8

7:00 am-1:45 pm

1 stop6h 45m

Boise Air Term. Gowen Fld

Tue 2/11

2:40 pm-10:36 pm

1 stop7h 56m

$253

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 2/22

3:45 pm-5:50 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

Tue 2/25

5:30 pm-7:30 pm

Nonstop2h 00m

$262

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Wed 2/19

7:50 pm-12:03 am

1 stop5h 13m

Spokane

Wed 2/26

3:25 pm-12:17 am

1 stop7h 52m

$263

DenverIdaho Falls

DEN - IDA

DENIDA

Denver Intl

Thu 2/20

6:05 pm-10:44 pm

1 stop4h 39m

Idaho Falls Fanning Field

Thu 2/27

6:58 pm-10:35 pm

1 stop3h 37m

$279

DenverJackson

DEN - JAC

DENJAC

Denver Intl

Wed 3/12

8:05 am-9:48 am

Nonstop1h 43m

Jackson Hole

Sat 3/15

7:00 am-8:52 am

Nonstop1h 52m

$289

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

Sat 5/24

7:45 am-9:37 am

Nonstop1h 52m

West Yellowstone

Tue 5/27

1:48 pm-3:33 pm

Nonstop1h 45m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 53 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.

Travel insights for flights from Denver to Idaho

Get recent, data-driven insights about flights from Denver to Idaho including ideal travel times, pricing trends, and more.

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 $436). 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 January 21, 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 January 21, 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 (10 on average).

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 January 21, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and Alaska Airlines 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
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 2 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 United Airlines, with whom users have recently found tickets for as low as $99. However, be on the lookout for offers from Delta and Southwest, 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 Air Canada (83%), United Airlines (79%) or Southwest (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 $320 for a flight from Denver to Idaho. The cheapest flight overall is $128 while the most popular route, (Denver Intl - Spokane) is currently priced at $263.

  • 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 $436). 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 Miami flights
Denver to Orlando flights
Denver to Sky Harbor Intl flights
Denver to John F Kennedy Intl flights
Denver to LaGuardia flights
Denver to Seattle flights
Denver to Dallas/Fort Worth flights
Denver to Honolulu flights
Denver to Newark flights
Denver to Tampa flights
Denver to Los Angeles flights
Denver to O'Hare Intl flights
Denver to New Orleans flights
Denver to San Francisco flights
Denver to San Diego flights
Denver to Hobby flights
Denver to Dulles Intl flights
Denver to Philadelphia flights
Denver to Fort Lauderdale flights
Denver to Baltimore flights
Denver to Boston flights
Denver to Reagan-National flights
Denver to Fort Myers flights
Denver to George Bush Intcntl flights
Denver to Ontario flights
Denver to Atlanta flights
Denver to Austin flights
Denver to Santa Ana flights
Denver to Kahului flights
Denver to Raleigh flights
Denver to Salt Lake City flights
Denver to Nashville flights
Denver to Palm Springs flights
Denver to Midway flights
Denver to Portland flights
Denver to Kailua-Kona flights
Denver to Lihue flights
Denver to Charlotte flights
Denver to Charleston flights
Denver to Anchorage flights
Denver to Detroit flights
Denver to Kansas City flights
Denver to Minneapolis flights
Denver to Savannah flights
Denver to San Jose flights
Denver to Jacksonville flights
Denver to West Palm Beach flights
Denver to Sarasota flights
Denver to San Antonio 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$156Average$430FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$355FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$182Average$235FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$223Average$295FlexibilityNo 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.