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$44+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$148
(Kiwi.com)

One-way from

$44
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$331

Good round-trip deal

$227 or less

Good one-way deal

$138 or less
Provider with most accurate pricing for Denver Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Boise Air Term. Gowen Fld flights.
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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. 14% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Frontier deal was found by Cheapflights users on 2/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:48 amDEN - GEG
Nonstop2h 21mFrontier
Sun 8/1711:54 amGEG - DEN
Nonstop2h 21mFrontier
Deal found 2/20$153
This Frontier deal was found by Cheapflights users on 2/19. 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 5/159:50 amDEN - BOI
Nonstop1h 57mFrontier
Sun 5/1812:36 pmBOI - DEN
Nonstop1h 58mFrontier
Deal found 2/19$163
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 6/1811:20 amDEN - WYS
Nonstop1h 52mUnited Airlines
Wed 6/251:48 pmWYS - DEN
Nonstop1h 45mUnited Airlines
Deal found 2/19$190
This Hawaiian Airlines deal was found by Cheapflights users on 2/18. 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.
Tue 4/226:37 pmDEN - BOI
1 stop5h 22mHawaiian Airlines
Wed 4/236:03 amBOI - DEN
1 stop5h 18mHawaiian Airlines
Deal found 2/18$196
This Southwest deal was found by Cheapflights users on 2/19. 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.
Mon 4/78:30 amDEN - BOI
Nonstop2h 00mSouthwest
Mon 4/145:05 amBOI - DEN
Nonstop1h 55mSouthwest
Deal found 2/19$197
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 4/18:55 pmDEN - BOI
Nonstop2h 08mUnited Airlines
Tue 4/85:25 pmBOI - DEN
Nonstop1h 59mUnited Airlines
Deal found 2/19$198
This Expedia deal was found by Cheapflights users on 2/19. 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.
Tue 6/37:05 pmDEN - BOI
1 stop4h 54mMultiple Airlines
Tue 6/1012:36 pmBOI - DEN
Nonstop1h 58mMultiple Airlines
Deal found 2/19$202
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 4/42:53 pmDEN - BOI
1 stop9h 06mAlaska Airlines
Mon 4/76:00 amBOI - DEN
1 stop7h 53mAlaska Airlines
Deal found 2/19$206
This Delta deal was found by Cheapflights users on 2/19. 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 3/195:45 amDEN - BOI
1 stop4h 30mDelta
Thu 3/205:59 pmBOI - DEN
1 stop4h 32mDelta
Deal found 2/19$217
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 4/197:00 amDEN - GEG
1 stop4h 51mAlaska Airlines
Wed 4/237:24 pmGEG - DEN
1 stop24h 51mAlaska Airlines
Deal found 2/20$275
This Delta deal was found by Cheapflights users on 2/19. 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 3/192:20 pmDEN - GEG
1 stop7h 45mDelta
Wed 3/265:15 amGEG - DEN
1 stop7h 14mDelta
Deal found 2/19$283
This United Airlines deal was found by Cheapflights users on 2/20. 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 3/227:30 pmDEN - JAC
Nonstop1h 34mUnited Airlines
Sat 3/296:03 pmJAC - DEN
Nonstop1h 37mUnited Airlines
Deal found 2/20$290

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 February 20, 2025.

Fly from

Denver

Fly to

Idaho

Route

Depart

Return

Price

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Thu 8/14

9:48 am-11:09 am

Nonstop2h 21m

Spokane

Sun 8/17

11:54 am-3:15 pm

Nonstop2h 21m

$153

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 5/15

9:50 am-11:47 am

Nonstop1h 57m

Boise Air Term. Gowen Fld

Sun 5/18

12:36 pm-2:34 pm

Nonstop1h 58m

$163

DenverWest Yellowstone

DEN - WYS

DENWYS

Denver Intl

Wed 6/18

11:20 am-1:12 pm

Nonstop1h 52m

West Yellowstone

Wed 6/25

1:48 pm-3:33 pm

Nonstop1h 45m

$190

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Tue 4/22

6:37 pm-11:59 pm

1 stop5h 22m

Boise Air Term. Gowen Fld

Wed 4/23

6:03 am-11:21 am

1 stop5h 18m

$196

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Mon 4/7

8:30 am-10:30 am

Nonstop2h 00m

Boise Air Term. Gowen Fld

Mon 4/14

5:05 am-7:00 am

Nonstop1h 55m

$197

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Tue 4/1

8:55 pm-11:03 pm

Nonstop2h 08m

Boise Air Term. Gowen Fld

Tue 4/8

5:25 pm-7:24 pm

Nonstop1h 59m

$198

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Fri 4/4

2:53 pm-11:59 pm

1 stop9h 06m

Boise Air Term. Gowen Fld

Mon 4/7

6:00 am-1:53 pm

1 stop7h 53m

$206

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 3/19

5:45 am-10:15 am

1 stop4h 30m

Boise Air Term. Gowen Fld

Thu 3/20

5:59 pm-10:31 pm

1 stop4h 32m

$217

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Sat 4/19

7:00 am-10:51 am

1 stop4h 51m

Spokane

Wed 4/23

7:24 pm-9:15 pm

1 stop24h 51m

$275

DenverSpokane

DEN - GEG

DENGEG

Denver Intl

Wed 3/19

2:20 pm-9:05 pm

1 stop7h 45m

Spokane

Wed 3/26

5:15 am-1:29 pm

1 stop7h 14m

$283

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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.

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 February 20, 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 February 20, 2025.

The most flights from DEN to USID are scheduled on a Monday (15 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (9 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 February 20, 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
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 Allegiant Air, with whom users have recently found tickets for as low as $44. However, be on the lookout for offers from Frontier and United 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 Air Canada (79%), United Airlines (77%) or Copa Airlines (75%) 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 $232 for a flight from Denver to Idaho. The cheapest flight overall is $94 while the most popular route, (Denver Intl - Spokane) is currently priced at $281.

  • 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.

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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 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$169Average$417FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$357FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$182Average$318FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$197Average$288FlexibilityNo cancel feeOn-time63%
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