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$64+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$87
(Agoda.com)

One-way from

$64
(Trip.com)

Popular in

November

Cheapest in

February

Average price

$278

Good round-trip deal

$347 or less

Good one-way deal

$196 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Denver Intl flights.
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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. 4% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Agoda.com deal was found by Cheapflights users on 4/30. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/255:51 pmIDA - DEN
Nonstop1h 48mAllegiant Air
Thu 5/293:24 pmDEN - IDA
Nonstop1h 42mAllegiant Air
Deal found 4/30$87
This Frontier deal was found by Cheapflights users on 4/30. 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 6/2211:58 amGEG - DEN
Nonstop2h 21mFrontier
Sun 6/299:42 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 4/30$138
This Frontier deal was found by Cheapflights users on 4/30. 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 5/182:27 pmBOI - DEN
Nonstop1h 59mFrontier
Sun 5/259:54 amDEN - BOI
Nonstop1h 57mFrontier
Deal found 4/30$147
This Expedia deal was found by Cheapflights users on 4/29. 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 5/2711:49 amGEG - DEN
Nonstop2h 18mMultiple Airlines
Tue 6/36:00 amDEN - GEG
1 stop5h 02mMultiple Airlines
Deal found 4/29$172
This Expedia deal was found by Cheapflights users on 5/1. 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 5/2712:36 pmBOI - DEN
Nonstop1h 59mMultiple Airlines
Wed 6/46:00 amDEN - BOI
1 stop8h 05mMultiple Airlines
Deal found 5/1$175
This Southwest deal was found by Cheapflights users on 5/1. 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.
Tue 5/274:20 pmBOI - DEN
Nonstop1h 55mSouthwest
Wed 6/41:55 pmDEN - BOI
Nonstop2h 00mSouthwest
Deal found 5/1$189
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/215:00 amIDA - DEN
Nonstop1h 59mUnited Airlines
Mon 5/268:00 amDEN - IDA
Nonstop1h 44mUnited Airlines
Deal found 4/30$189
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 5/285:39 pmBOI - DEN
1 stop6h 26mHawaiian Airlines
Wed 6/46:00 amDEN - BOI
1 stop8h 05mHawaiian Airlines
Deal found 4/30$198
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 5/265:10 amBOI - DEN
Nonstop2h 05mUnited Airlines
Tue 6/37:45 amDEN - BOI
Nonstop2h 01mUnited Airlines
Deal found 4/30$200
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/276:00 amGEG - DEN
1 stop5h 00mAlaska Airlines
Tue 6/36:00 amDEN - GEG
1 stop5h 02mAlaska Airlines
Deal found 4/29$206
This Delta deal was found by Cheapflights users on 4/30. 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 7/15:30 amBOI - DEN
1 stop6h 28mDelta
Sat 7/56:23 pmDEN - BOI
1 stop4h 50mDelta
Deal found 4/30$209
This Delta deal was found by Cheapflights users on 4/30. 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.
Mon 6/306:00 amIDA - DEN
1 stop3h 23mDelta
Fri 7/46:23 pmDEN - IDA
1 stop4h 32mDelta
Deal found 4/30$209

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 May 1, 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

Sun 5/25

5:51 pm-7:39 pm

Nonstop1h 48m

Denver Intl

Thu 5/29

3:24 pm-5:06 pm

Nonstop1h 42m

$87

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Sun 6/22

11:58 am-3:19 pm

Nonstop2h 21m

Denver Intl

Sun 6/29

9:42 am-11:03 am

Nonstop2h 21m

$138

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Sun 5/18

2:27 pm-4:26 pm

Nonstop1h 59m

Denver Intl

Sun 5/25

9:54 am-11:51 am

Nonstop1h 57m

$147

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Tue 5/27

11:49 am-3:07 pm

Nonstop2h 18m

Denver Intl

Tue 6/3

6:00 am-10:02 am

1 stop5h 02m

$172

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 5/27

12:36 pm-2:35 pm

Nonstop1h 59m

Denver Intl

Wed 6/4

6:00 am-2:05 pm

1 stop8h 05m

$175

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 5/27

5:10 am-7:15 am

Nonstop2h 05m

Denver Intl

Tue 6/3

7:45 am-9:46 am

Nonstop2h 01m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 5/21

5:00 am-6:59 am

Nonstop1h 59m

Denver Intl

Mon 5/26

8:00 am-9:44 am

Nonstop1h 44m

$189

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Wed 5/28

5:39 pm-12:05 am

1 stop6h 26m

Denver Intl

Wed 6/4

6:00 am-2:05 pm

1 stop8h 05m

$198

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Wed 5/28

5:25 pm-10:20 pm

1 stop4h 55m

Denver Intl

Wed 6/4

1:55 pm-3:55 pm

Nonstop2h 00m

$199

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Tue 5/27

6:00 am-12:00 pm

1 stop5h 00m

Denver Intl

Tue 6/3

6:00 am-10:02 am

1 stop5h 02m

$206

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 58 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 May 1, 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 May 1, 2025.

The most flights from USID to DEN are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Denver by month

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

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

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

If weather is an important factor for your trip to Denver, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 May 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Idaho to Denver. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.9

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.9

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
4,293 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.9

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.9

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.9

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 86 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 Frontier ($64), Alaska Airlines ($94), and United Airlines ($95).

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

    While some choose either Spokane - Denver Intl or Jackson Hole - 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: Lufthansa (86%), SkyWest Airlines (86%), Air Canada (85%).

  • What are the cheapest flights from Idaho to Denver?

    The cheapest flight price from Idaho to Denver is $107. On average you can expect to pay $903. The most popular route, (Boise Air Term. Gowen Fld - Denver Intl), can usually be booked for $169.

  • 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
Silverthorne
Brighton
Golden
Thornton
Greeley
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Limon

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Alternative routes for Idaho to Denver

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$54Average$121FlexibilityNo cancel feeOn-time88%
FrontierCheapest$58Average$149FlexibilityNo cancel feeOn-time62%
DeltaCheapest$183Average$428FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$335FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$191Average$387FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$212Average$285FlexibilityNo cancel feeOn-time63%

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