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$99+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Idaho to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Denver (DEN). 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

$237
(Southwest)

One-way from

$99
(Southwest)

Good round-trip deal

$326 or less

Good one-way deal

$205 or less
From Idaho to Denver Intl
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One-way flight from Idaho to Denver Intl
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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 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.
Mon 4/142:25 pmBOI - DEN
Nonstop1h 55mSouthwest
Thu 4/178:10 amDEN - BOI
Nonstop1h 55mSouthwest
Deal found 1/21$237
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/37:55 pmBOI - DEN
1 stop17h 59mAlaska Airlines
Wed 3/57:00 amDEN - BOI
2 stops13h 29mAlaska Airlines
Deal found 1/21$245
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.
Sat 2/226:00 amBOI - DEN
1 stop5h 37mDelta
Wed 2/266:25 amDEN - BOI
1 stop7h 20mDelta
Deal found 1/21$247
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/45:30 pmBOI - DEN
Nonstop2h 00mUnited Airlines
Tue 3/1111:23 amDEN - BOI
Nonstop2h 05mUnited Airlines
Deal found 1/21$249
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/185:44 pmIDA - DEN
Nonstop1h 51mUnited Airlines
Tue 2/257:51 amDEN - IDA
Nonstop1h 49mUnited Airlines
Deal found 1/21$259
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.
Wed 3/511:25 amGEG - DEN
1 stop6h 32mDelta
Wed 3/197:50 pmDEN - GEG
1 stop5h 15mDelta
Deal found 1/21$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.
Tue 2/256:58 pmIDA - DEN
2 stops29h 19mDelta
Fri 3/76:05 pmDEN - IDA
1 stop4h 39mDelta
Deal found 1/21$276
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/134:20 pmJAC - DEN
Nonstop1h 48mUnited Airlines
Sun 2/167:20 pmDEN - JAC
Nonstop1h 34mUnited Airlines
Deal found 1/21$289
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/95:48 pmGEG - DEN
1 stop5h 10mAlaska Airlines
Wed 4/237:55 pmDEN - GEG
1 stop5h 04mAlaska Airlines
Deal found 1/21$292
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/258:00 amIDA - DEN
1 stop13h 20mAlaska Airlines
Thu 3/67:55 pmDEN - IDA
1 stop26h 41mAlaska Airlines
Deal found 1/21$292
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 1/3112:38 pmLWS - DEN
1 stop5h 43mDelta
Sun 2/25:40 amDEN - LWS
1 stop7h 18mDelta
Deal found 1/21$298
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 2/137:05 amJAC - DEN
1 stop6h 02mDelta
Sun 2/166:50 amDEN - JAC
1 stop8h 29mDelta
Deal found 1/21$309

Find flights from Idaho to Denver within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 4/14

2:25 pm-4:20 pm

Nonstop1h 55m

Denver Intl

Thu 4/17

8:10 am-10:05 am

Nonstop1h 55m

$237

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 3/3

7:55 pm-1:54 pm

1 stop17h 59m

Denver Intl

Wed 3/5

7:00 am-8:29 pm

2 stops13h 29m

$245

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Sat 2/22

6:00 am-11:37 am

1 stop5h 37m

Denver Intl

Wed 2/26

6:25 am-1:45 pm

1 stop7h 20m

$247

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 3/4

5:30 pm-7:30 pm

Nonstop2h 00m

Denver Intl

Tue 3/11

11:23 am-1:28 pm

Nonstop2h 05m

$249

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 2/18

5:44 pm-7:35 pm

Nonstop1h 51m

Denver Intl

Tue 2/25

7:51 am-9:40 am

Nonstop1h 49m

$259

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 3/5

11:25 am-6:57 pm

1 stop6h 32m

Denver Intl

Wed 3/19

7:50 pm-12:05 am

1 stop5h 15m

$263

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 2/25

6:58 pm-12:17 am

2 stops29h 19m

Denver Intl

Fri 3/7

6:05 pm-10:44 pm

1 stop4h 39m

$276

JacksonDenver

JAC - DEN

JACDEN

Jackson Hole

Sat 3/8

6:03 pm-7:40 pm

Nonstop1h 37m

Denver Intl

Tue 3/18

7:30 pm-9:04 pm

Nonstop1h 34m

$289

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 4/9

5:48 pm-11:58 pm

1 stop5h 10m

Denver Intl

Thu 4/24

7:55 pm-11:59 pm

1 stop5h 04m

$292

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Tue 2/25

8:00 am-9:20 pm

1 stop13h 20m

Denver Intl

Thu 3/6

7:55 pm-10:36 pm

1 stop26h 41m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 46 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.

Travel insights for flights from Idaho to Denver

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

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 January 21, 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 January 21, 2025.

The most flights from USID to DEN 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 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 January 21, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and United Airlines from Idaho to Denver. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

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

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

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

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

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

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

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
8,985 reviews
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

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

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

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 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 99 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 Southwest ($99), Delta ($109), and Alaska Airlines ($118).

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

    While some choose either Boise Air Term. Gowen Fld - Denver Intl or Idaho Falls Fanning Field - Denver Intl, Spokane - 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 (89%), Southwest (88%), Copa Airlines (84%).

  • What are the cheapest flights from Idaho to Denver?

    The cheapest flight price from Idaho to Denver is $155. On average you can expect to pay $1,207. The most popular route, (Spokane - Denver Intl), can usually be booked for $263.

  • 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
Keystone
Westminster
Black Hawk
Winter Park
Dillon
Lakewood
Broomfield
Silverthorne
Golden
Brighton
Frisco
Wheat Ridge
Grand Lake
Idaho Springs
Greeley
Central City
Copper Mountain
Longmont
Thornton
Limon

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Alternative routes for Idaho to Denver

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Top 4 airlines flying from Idaho to Denver

Discover the top 4 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$171Average$394FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$339FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$191Average$284FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$233Average$285FlexibilityNo cancel feeOn-time63%
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