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$32+ Cheap flights from Boise to Denver (BOI - 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Find cheap flights from Boise to Denver 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”

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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Denver Intl are usually found in October or August, booked 53 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Boise to Denver

Cheapest flights from Boise to Denver
Explore the most affordable flight options available from Boise to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Thu 12/2512:38 pmBOI - DEN
Nonstop2h 01mFrontier
Thu 1/19:36 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/11$188
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Sun 12/2812:38 pmBOI - DEN
Nonstop2h 01mFrontier
Thu 1/19:36 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/11$221
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Sat 12/2012:54 pmBOI - DEN
Nonstop2h 01mFrontier
Thu 12/259:36 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/9$241
This Frontier deal was found by Cheapflights users on 12/11. 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 12/2112:38 pmBOI - DEN
Nonstop2h 01mFrontier
Sun 1/49:36 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/11$243
This Frontier deal was found by Cheapflights users on 12/10. 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.
Sat 12/2012:54 pmBOI - DEN
Nonstop2h 01mFrontier
Sat 12/279:52 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/10$255
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Thu 12/1812:38 pmBOI - DEN
Nonstop2h 01mFrontier
Sat 12/209:52 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/10$256
This Frontier deal was found by Cheapflights users on 12/9. 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 12/2112:38 pmBOI - DEN
Nonstop2h 01mFrontier
Thu 12/259:36 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/9$259
This Expedia deal was found by Cheapflights users on 12/10. 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.
Thu 12/253:45 pmBOI - DEN
1 stop8h 14mMultiple Airlines
Thu 1/19:36 amDEN - BOI
Nonstop2h 07mMultiple Airlines
Deal found 12/10$265
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Fri 12/1910:41 pmBOI - DEN
1 stop10h 23mMultiple Airlines
Thu 12/259:36 amDEN - BOI
Nonstop2h 07mMultiple Airlines
Deal found 12/9$267
This Frontier deal was found by Cheapflights users on 12/11. 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 12/2112:38 pmBOI - DEN
Nonstop2h 01mFrontier
Sat 12/279:52 amDEN - BOI
Nonstop2h 07mFrontier
Deal found 12/11$270
This Alaska Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 12/251:22 pmBOI - DEN
1 stop4h 53mAlaska Airlines
Tue 1/68:00 amDEN - BOI
1 stop7h 22mAlaska Airlines
Deal found 12/10$280

Find flight deals from Boise to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$121
(Expedia)

One-way from

$32
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$303

Good round-trip deal

$311 or less

Good one-way deal

$160 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Denver Intl flights.
Search Deals
From Boise Air Term. Gowen Fld to Denver Intl
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Denver Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Boise Air Term. Gowen Fld to Denver Intl.
Search Deals
Price to beat on a one-way flight from Boise Air Term. Gowen Fld to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 December 12, 2025.
Use the filters below to find and compare flights from Boise to Denver that are best for you.

Fly from

Boise

Fly to

Denver

Route

Depart

Return

Price

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/9

3:43 pm-11:35 pm

1 stop7h 52m

Denver Intl

Sun 1/11

9:10 am-11:17 am

Nonstop2h 07m

$141

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 1/6

11:58 am-9:28 pm

2 stops9h 30m

Denver Intl

Mon 1/12

9:10 am-11:17 am

Nonstop2h 07m

$151

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 2/12

12:28 pm-2:28 pm

Nonstop2h 00m

Denver Intl

Sun 2/15

11:38 am-5:06 pm

1 stop5h 28m

$178

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Wed 1/7

5:15 pm-11:25 pm

1 stop6h 10m

Denver Intl

Sat 1/10

12:30 pm-8:12 pm

1 stop7h 42m

$185

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 2/26

4:55 pm-11:25 pm

1 stop6h 30m

Denver Intl

Mon 3/2

6:40 am-1:11 pm

1 stop6h 31m

$185

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/23

5:15 pm-11:25 pm

1 stop6h 10m

Denver Intl

Mon 1/26

12:30 pm-8:12 pm

1 stop7h 42m

$185

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 1/9

10:39 am-5:34 pm

1 stop6h 55m

Denver Intl

Mon 1/12

6:29 am-1:00 pm

1 stop6h 31m

$185

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 1/6

6:10 am-8:20 am

Nonstop2h 10m

Denver Intl

Mon 1/12

7:46 pm-9:52 pm

Nonstop2h 06m

$202

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Tue 1/6

11:20 am-1:10 pm

Nonstop1h 50m

Denver Intl

Fri 1/9

8:35 am-10:40 am

Nonstop2h 05m

$202

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 2/6

2:37 pm-4:36 pm

Nonstop1h 59m

Denver Intl

Tue 2/10

11:30 am-1:35 pm

Nonstop2h 05m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 23 results
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Compare providers for flights from Boise to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boise-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Denver

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

How far ahead should I book a flight from Boise to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Denver. Price data was last updated on December 5, 2025.

The price you pay for your flight from Boise to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Boise to Denver (average of $58). Flying from Boise to Denver in April is currently the most expensive (average of $197). 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 BOI to DEN?

Find hourly flight availability from Boise 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Boise to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the morning.

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 December 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Boise to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,432 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,253 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Frontier
5.8
Fair
3,084 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from Boise to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Boise to Denver?

    You will need to book a flight from Boise Air Term. Gowen Fld to Denver Intl if you want to fly from Boise to Denver. At least 5 different airlines have flights from Air Term. Gowen Fld (BOI) to Denver Intl (DEN) on a regular basis. There are 14 flights to Denver from the Boise airport per day. If you manage to book one that is nonstop, then you can expect the flight time from BOI to DEN to be around 1h 50m.

  • How popular is this Boise to Denver flight route?

    Flights from Boise Air Term. Gowen Fld to Denver Intl have been viewed 99 times in the past calendar month.

  • How long is the flight from Boise to Denver?

    Airlines like Delta fly from Boise to Denver in about 6h 10m. The time it takes to get you to your destination can typically vary by up to . The distance between Boise and Denver is about 647 mi.

  • What are the cheapest airlines flying from Boise to Denver round-trip?

    Currently priced at $57, Frontier will fly you from Boise to Denver and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Alaska Airlines - these airlines can fly you to your destination from $128 and $154, respectively. These flights start at 78% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $40. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Boise to Denver for a low price.

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

    Before booking your flight to Denver from Boise, check out the most reliable airlines to get you to your destination on time: Frontier (91%), SkyWest Airlines (89%), United Airlines( 89%).

  • What are the cheapest flights from Boise to Denver?

    Looking for the cheapest flight from Boise to Denver? While on average our users pay $1,215, our data indicates the cheapest price to be $72. The most popular route (Boise Air Term. Gowen Fld - Denver Intl), is priced around $121.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Boise to Denver (average of $58). Flying from Boise to Denver in April is currently the most expensive (average of $197). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Boise to Denver

Discover the top 5 airlines that operate flights from Boise 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$148FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$246FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$154Average$428FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$180Average$303FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$192Average$282FlexibilityNo cancel feeOn-time63%

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