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$52+ Cheap flights from Idaho to Denver (DEN)

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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
1 adult, Economy
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Cheap flight deals from Idaho to Denver

Keep the following information in mind while searching for Idaho to Denver flight deals. Data was last updated June 26, 2025.

Round-trip from

$84
(Booking.com)

One-way from

$52
(Kiwi.com)

Popular in

November

Cheapest in

May

Average price

$303

Good round-trip deal

$342 or less

Good one-way deal

$181 or less
From Idaho to Denver Intl
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One-way flight from Idaho to Denver Intl
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Highest demand for flights based on searches. 6% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Idaho to Denver Intl.
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Price to beat on a one-way flight from Idaho to Denver Intl.
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Find flight deals from Idaho to Denver

Cheapest flights from Idaho to Denver
Explore the most affordable flight options available from Idaho to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

This Booking.com deal was found by Cheapflights users on 6/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:51 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Thu 8/213:24 pmDEN - IDA
Nonstop1h 42mAllegiant Air
Deal found 6/26$84
This Priceline deal was found by Cheapflights users on 6/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1011:58 amGEG - DEN
Nonstop2h 19mFrontier
Thu 7/179:42 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 6/26$116
This Frontier deal was found by Cheapflights users on 6/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1112:25 pmBOI - DEN
Nonstop1h 56mFrontier
Sun 9/149:48 amDEN - BOI
Nonstop1h 52mFrontier
Deal found 6/26$118
This Orbitz deal was found by Cheapflights users on 6/26. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:00 amBOI - DEN
1 stop4h 40mMultiple Airlines
Fri 10/39:48 amDEN - BOI
Nonstop1h 52mMultiple Airlines
Deal found 6/26$179
This Orbitz deal was found by Cheapflights users on 6/24. 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.
Tue 7/2211:51 amGEG - DEN
Nonstop2h 19mMultiple Airlines
Tue 7/296:00 amDEN - GEG
1 stop7h 29mMultiple Airlines
Deal found 6/24$193
This Kiwi.com deal was found by Cheapflights users on 6/24. 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.
Tue 9/3011:22 amBOI - DEN
1 stop5h 59mHawaiian Airlines
Tue 10/76:20 pmDEN - BOI
1 stop5h 36mHawaiian Airlines
Deal found 6/24$196
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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.
Tue 8/56:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Tue 8/198:00 amDEN - GEG
1 stop5h 29mAlaska Airlines
Deal found 6/25$196
This Delta deal was found by Cheapflights users on 6/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:10 pmGEG - DEN
1 stop4h 01mDelta
Tue 8/196:50 amDEN - GEG
1 stop4h 44mDelta
Deal found 6/25$197
This Delta deal was found by Cheapflights users on 6/23. 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 9/1811:30 amJAC - DEN
1 stop3h 39mDelta
Sat 9/205:30 amDEN - JAC
1 stop5h 19mDelta
Deal found 6/23$209
This Delta deal was found by Cheapflights users on 6/26. 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.
Fri 8/156:52 pmIDA - DEN
1 stop3h 56mDelta
Wed 8/205:45 amDEN - IDA
1 stop4h 54mDelta
Deal found 6/26$209
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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.
Sun 9/286:35 amBOI - DEN
1 stop5h 35mAlaska Airlines
Mon 9/299:23 pmDEN - BOI
1 stop12h 05mAlaska Airlines
Deal found 6/25$217
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Tue 8/55:42 pmBOI - DEN
Nonstop1h 57mUnited Airlines
Thu 8/74:08 pmDEN - BOI
Nonstop1h 59mUnited Airlines
Deal found 6/25$221

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho to Denver 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 June 26, 2025.
Use the filters below to find and compare flights from Idaho to Denver that are best for you.

Fly from

Idaho

Fly to

Denver

Route

Depart

Return

Price

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 8/14

5:51 pm-7:39 pm

Nonstop1h 48m

Denver Intl

Thu 8/21

3:24 pm-5:06 pm

Nonstop1h 42m

$84

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 7/10

11:58 am-3:17 pm

Nonstop2h 19m

Denver Intl

Thu 7/17

9:42 am-11:03 am

Nonstop2h 21m

$116

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 9/11

12:25 pm-2:21 pm

Nonstop1h 56m

Denver Intl

Sun 9/14

9:48 am-11:40 am

Nonstop1h 52m

$118

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 7/24

5:43 pm-11:59 pm

1 stop6h 16m

Denver Intl

Sun 7/27

9:50 am-11:46 am

Nonstop1h 56m

$188

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Tue 7/22

11:51 am-3:10 pm

Nonstop2h 19m

Denver Intl

Tue 7/29

6:00 am-12:29 pm

1 stop7h 29m

$193

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Tue 8/5

6:07 pm-11:59 pm

1 stop4h 52m

Denver Intl

Tue 8/19

8:00 am-12:29 pm

1 stop5h 29m

$196

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 8/6

5:10 pm-10:11 pm

1 stop4h 01m

Denver Intl

Tue 8/19

6:50 am-10:34 am

1 stop4h 44m

$197

JacksonDenver

JAC - DEN

JACDEN

Jackson Hole

Thu 9/18

11:30 am-3:09 pm

1 stop3h 39m

Denver Intl

Sat 9/20

5:30 am-10:49 am

1 stop5h 19m

$209

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 8/15

6:52 pm-10:48 pm

1 stop3h 56m

Denver Intl

Wed 8/20

5:45 am-10:39 am

1 stop4h 54m

$209

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 9/8

6:35 am-12:10 pm

1 stop5h 35m

Denver Intl

Mon 9/15

11:40 am-4:50 pm

1 stop5h 10m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Idaho 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 Idaho to Denver

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

Currently, October is the cheapest month in which you can book a flight from Idaho to Denver (average of $197). Flying from Idaho to Denver in March is currently the most expensive (average of $278). 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 ID to DEN?

Find hourly flight availability from Idaho to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 26, 2025.

When flying from Idaho to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Idaho to Denver

Explore weekly flight availability from Idaho to Denver. 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 June 26, 2025.

The most flights from USID to DEN are scheduled on a Thursday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated June 26, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Idaho to Denver to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

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

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

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
4,276 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

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
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

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
2,522 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

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
8,838 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

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 Idaho to Denver. 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 into for flights to Denver from Idaho?

    Most people fly into Denver Intl (DEN) if they book a flight to Denver from Idaho. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How popular is this Idaho to Denver flight route?

    This flight path from Idaho to Denver Intl was viewed by 97 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    The cheapest airlines for a one-way flight from Idaho to Denver are Allegiant Air ($52), Frontier ($59), and Hawaiian Airlines ($88).

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

    While some choose either Spokane - Denver Intl or Idaho Falls Fanning Field - Denver Intl, Boise Air Term. Gowen Fld - Denver Intl is the most popular route from Idaho to Denver.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Idaho to Denver on time: SkyWest Airlines (90%), United Airlines (78%), Air Canada (70%).

  • What are the cheapest flights from Idaho to Denver?

    The cheapest flight price from Idaho to Denver is $121. On average you can expect to pay $814. The most popular route, (Boise Air Term. Gowen Fld - Denver Intl), can usually be booked for $183.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to Denver 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 Idaho to Denver?

    Currently, October is the cheapest month in which you can book a flight from Idaho to Denver (average of $197). Flying from Idaho to Denver in March is currently the most expensive (average of $278). 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

Traveling to a place near Idaho?

Book flights to Idaho if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Broomfield
Grand Lake
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Greeley

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Alternative routes for Idaho to Denver

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

Discover the top 6 airlines that operate flights from Idaho to Denver. 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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$54Average$90FlexibilityNo cancel feeOn-time88%
FrontierCheapest$58Average$153FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$328FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$191Average$261FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$207Average$285FlexibilityNo cancel feeOn-time63%

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