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$66+ Cheap flights from Denver to Boise (DEN - BOI)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Denver Intl to Boise Air Term. Gowen Fld are usually found in February or September, booked 62 days in advance, depart on a Thursday or Sunday and return on a Thursday

Cheap flight deals from Denver to Boise

Cheapest flights from Denver to Boise
Explore the most affordable flight options available from Denver to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/7. 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 9/110:08 am
DEN
-
BOI
Nonstop2h 01m
Frontier
Tue 9/81:04 pm
BOI
-
DEN
Nonstop2h 05m
Frontier
Deal found 5/7$123
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Tue 6/910:29 am
DEN
-
BOI
Nonstop2h 01m
Frontier
Tue 6/161:25 pm
BOI
-
DEN
Nonstop2h 23m
Frontier
Deal found 5/10$133
This Frontier deal was found by Cheapflights users on 5/9. 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.
Tue 6/2310:29 am
DEN
-
BOI
Nonstop2h 01m
Frontier
Tue 6/301:25 pm
BOI
-
DEN
Nonstop2h 23m
Frontier
Deal found 5/9$134
This Frontier deal was found by Cheapflights users on 5/7. 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 8/1310:29 am
DEN
-
BOI
Nonstop2h 00m
Frontier
Tue 8/181:04 pm
BOI
-
DEN
Nonstop2h 05m
Frontier
Deal found 5/7$138
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/710:33 am
DEN
-
BOI
Nonstop2h 05m
Frontier
Tue 6/91:25 pm
BOI
-
DEN
Nonstop2h 23m
Frontier
Deal found 5/8$160
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/410:33 am
DEN
-
BOI
Nonstop2h 05m
Frontier
Sun 6/71:33 pm
BOI
-
DEN
Nonstop2h 16m
Frontier
Deal found 5/7$161
This Trip.com deal was found by Cheapflights users on 5/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2810:25 am
DEN
-
BOI
Nonstop2h 05m
Frontier
Sun 5/311:25 pm
BOI
-
DEN
Nonstop2h 16m
Frontier
Deal found 5/7$163
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 7/2310:29 am
DEN
-
BOI
Nonstop2h 00m
Frontier
Tue 7/281:25 pm
BOI
-
DEN
Nonstop2h 06m
Frontier
Deal found 5/10$179

Find flight deals from Denver to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Boise (BOI). 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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$123
(Kiwi.com)

One-way from

$66
(Kiwi.com)

Popular in

April

Cheapest in

February

Average price

$298

Good round-trip deal

$294 or less

Good one-way deal

$94 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 Boise Air Term. Gowen Fld
Search Deals
One-way flight from Denver Intl to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Boise Air Term. Gowen Fld.
Search Deals
Price to beat on a one-way flight from Denver Intl to Boise Air Term. Gowen Fld.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Boise 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 11, 2026.
Use the filters below to find and compare flights from Denver to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Tue 6/2

4:25 pm-11:20 pm

2 stops6h 55m

Boise Air Term. Gowen Fld

Tue 6/9

2:05 pm-8:15 pm

1 stop6h 10m

$288
Quickest round-trip

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 8/5

3:55 pm-5:56 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Mon 8/10

5:46 pm-7:45 pm

Nonstop1h 59m

$290

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 8/5

9:10 am-4:10 pm

1 stop7h 00m

Boise Air Term. Gowen Fld

Mon 8/10

9:05 am-3:35 pm

2 stops6h 30m

$311

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sun 7/26

8:00 am-10:05 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Fri 7/31

4:25 pm-6:20 pm

Nonstop1h 55m

$317

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Thu 5/28

1:10 pm-6:20 pm

1 stop5h 10m

Boise Air Term. Gowen Fld

Sun 5/31

6:00 am-12:35 pm

2 stops6h 35m

$319

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Sat 6/6

5:30 am-9:32 am

1 stop4h 02m

Boise Air Term. Gowen Fld

Sun 6/7

6:42 pm-10:41 pm

1 stop3h 59m

$320

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 7/22

7:31 am-2:46 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Mon 7/27

6:07 pm-11:44 pm

1 stop5h 37m

$320

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Mon 8/31

6:25 pm-11:56 pm

1 stop5h 31m

Boise Air Term. Gowen Fld

Fri 9/4

5:45 pm-10:31 pm

1 stop4h 46m

$324

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Fri 7/10

8:55 pm-10:55 pm

Nonstop2h 00m

Boise Air Term. Gowen Fld

Sun 7/12

9:00 pm-1:30 am

1 stop4h 30m

$327

DenverBoise

DEN - BOI

DENBOI

Denver Intl

Wed 6/24

8:05 pm-12:25 am

1 stop4h 20m

Boise Air Term. Gowen Fld

Mon 6/29

4:25 pm-6:20 pm

Nonstop1h 55m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 22 resultsSorted by cheapest first
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Compare providers for flights from Denver to Boise

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 Denver to Boise in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Denver-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Boise flights, Cheapflights users trust FlightHub the most. FlightHub 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 Denver-Boise 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 Denver to Boise

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

Cheapflights Insights

Everything you need to know about your flight from Denver to Boise

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

To ensure you get the cheapest price possible for a flight from Denver to Boise, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Denver to Boise (average of $130). Flying from Denver to Boise in April is currently the most expensive (average of $315). 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 BOI?

Find hourly flight availability from Denver to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 11, 2026.

One of the essential ways to save on airfare from Denver to Boise is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 40% on airfare.

What is the cheapest day to fly from Denver to Boise?

Use this chart to determine the cheapest time to fly round-trip from Denver to Boise. Price data was last updated on May 2, 2026.

Travelers seeking maximum savings on their Denver to Boise flight should consider departing on Thursday mornings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Denver to Boise?

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated May 11, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Denver to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,296 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,296 reviews
Southwest
8.0
Very good
4,296 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,452 reviews
Southwest
8.0
Very good
4,296 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,700 reviews
Southwest
8.0
Very good
4,296 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,951 reviews
Southwest
8.0
Very good
4,296 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Denver to Boise. 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 Denver to Boise?

    You will need to book a flight from Denver Intl to Boise Air Term. Gowen Fld if you want to fly from Denver to Boise. At least 4 different airlines have flights from Denver Intl (DEN) to Air Term. Gowen Fld (BOI) on a regular basis. There are 15 flights to Boise from the Denver airport per day. If you manage to book one that is nonstop, then you can expect the flight time from DEN to BOI to be around 1h 50m.

  • How popular is this Denver to Boise flight route?

    Flights from Denver Intl to Boise Air Term. Gowen Fld have been viewed 8 times in the past calendar month.

  • How long is the flight from Denver to Boise?

    For as low as $290, Southwest can have you in Boise from Denver in 2h 01m. The distance between Denver and Boise is about 647 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Denver to Boise is Frontier. Our recent data shows that you can find tickets from as low as $54 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $68 and $161 round-trip. These flights start at 77% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Denver to Boise 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 Southwest and United Airlines, as they are both options that can get you from Denver to Boise for a low price.

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

    The top 3 most reliable airlines when flying from Denver to Boise are Frontier (93%), SkyWest Airlines (89%) and Copa Airlines (86%).

  • What are the cheapest flights from Denver to Boise?

    While on average a flight from Denver to Boise is generally $263, our data shows the cheapest flight currently is $84. When looking at the most popular route, (Denver Intl - Boise Air Term. Gowen Fld), you can expect to pay $208 for that flight.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Denver to Boise (average of $130). Flying from Denver to Boise in April is currently the most expensive (average of $315). 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 Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 4 airlines flying from Denver to Boise

Discover the top 4 airlines that operate flights from Denver to Boise. 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 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$125FlexibilityNo cancel feeOn-time62%
DeltaCheapest$68Average$209FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$161Average$328FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$189Average$305FlexibilityNo cancel feeOn-time63%

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