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$99+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
juin 17 — juin 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Denver Intl are usually found in May or February, booked 64 days in advance, depart on a Thursday or Wednesday and return on a Sunday

Cheap 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 juin 12, 2025.

Round-trip from

$149
(Frontier)

One-way from

$99
(Frontier)

Popular in

November

Cheapest in

May

Average price

$300

Good round-trip deal

$332 or less

Good one-way deal

$180 or less
From Boise Air Term. Gowen Fld to Denver Intl
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One-way flight from Boise Air Term. Gowen Fld 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 Boise Air Term. Gowen Fld to Denver Intl.
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Price to beat on a one-way flight from Boise Air Term. Gowen Fld to Denver Intl.
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Find 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 juin 12, 2025.

This Frontier deal was found by Cheapflights users on 6/12. 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.
jeu. 8/2812:27 pmBOI - DEN
Nonstop2h 00mFrontier
dim. 8/319:36 amDEN - BOI
Nonstop1h 56mFrontier
Deal found 6/12$149
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/306:35 amBOI - DEN
1 stop5h 35mAlaska Airlines
lun. 10/67:02 pmDEN - BOI
1 stop4h 55mAlaska Airlines
Deal found 6/11$210
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/54:05 pmBOI - DEN
Nonstop1h 55mSouthwest
jeu. 8/78:15 amDEN - BOI
Nonstop1h 55mSouthwest
Deal found 6/11$211
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/92:32 pmBOI - DEN
Nonstop1h 57mUnited Airlines
lun. 8/117:35 pmDEN - BOI
Nonstop1h 59mUnited Airlines
Deal found 6/10$221
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/276:00 amBOI - DEN
1 stop3h 14mDelta
mar. 9/26:25 pmDEN - BOI
1 stop3h 17mDelta
Deal found 6/11$231
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 9/61:53 pmBOI - DEN
2 stops9h 12mAmerican Airlines
sam. 9/133:07 pmDEN - BOI
1 stop4h 55mAmerican Airlines
Deal found 6/11$256

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 juin 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

jeu. 8/28

12:27 pm-2:27 pm

Nonstop2h 00m

Denver Intl

dim. 8/31

9:36 am-11:32 am

Nonstop1h 56m

$149

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

mar. 9/9

4:34 pm-9:47 pm

1 stop5h 13m

Denver Intl

lun. 9/15

6:17 pm-11:59 pm

1 stop5h 42m

$210

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

mar. 8/5

4:05 pm-6:00 pm

Nonstop1h 55m

Denver Intl

jeu. 8/7

8:15 am-10:10 am

Nonstop1h 55m

$211

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

mer. 9/10

6:35 am-12:10 pm

1 stop5h 35m

Denver Intl

sam. 9/13

11:40 am-4:50 pm

1 stop5h 10m

$217

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

sam. 8/9

2:32 pm-4:29 pm

Nonstop1h 57m

Denver Intl

lun. 8/11

7:35 pm-9:34 pm

Nonstop1h 59m

$221

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

mer. 8/27

6:00 am-9:14 am

1 stop3h 14m

Denver Intl

mer. 9/3

12:46 pm-4:57 pm

1 stop4h 11m

$231

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

sam. 9/6

1:53 pm-11:05 pm

2 stops9h 12m

Denver Intl

sam. 9/13

3:07 pm-8:02 pm

1 stop4h 55m

$256

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

ven. 8/29

12:27 pm-2:27 pm

Nonstop2h 00m

$99

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

mar. 8/26

6:35 am-12:10 pm

1 stop5h 35m

$105

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

mar. 8/26

5:00 am-7:05 am

Nonstop2h 05m

$106

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 15 results
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The best insider tips for Boise to Denver flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Boise to Denver trip
Airlines
United Airlines

United's Economy Plus offers extra legroom seats towards the front of the economy cabin.


United's MileagePlus allows pooling miles for family or friends, enhancing travel flexibility.

Read more about United Airlinesby Harriet Baskas
Southwest

Enjoy free snacks and non-alcoholic beverages, plus Wi-Fi for a fee on Southwest flights.


Southwest offers two free checked bags, including oversized items like skis or golf clubs.

Read more about Southwestby Marisa Garcia
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Marisa Garcia

Marisa Garcia

Expert on Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more

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 June 9, 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 64 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, October is the cheapest month in which you can book a flight from Boise to Denver (average of $197). Flying from Boise 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 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 juin 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Boise to Denver in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Boise to Denver. Price data was last updated on June 8, 2025.

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

Weekly flight availability from Boise to Denver

Explore weekly flight availability from Boise 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 juin 12, 2025.

The most flights from BOI to DEN are scheduled on a Monday (17 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 juin 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Boise to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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 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 98 times in the past calendar month.

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

    Currently priced at $149, 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 Alaska Airlines and Southwest - these airlines can fly you to your destination from $210 and $211, respectively. These flights start at 50% 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 $99. However, be on the lookout for offers from Hawaiian Airlines and Alaska Airlines, 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: SkyWest Airlines (92%), United Airlines (76%), Air Canada( 75%).

  • What are the cheapest flights from Boise to Denver?

    Looking for the cheapest flight from Boise to Denver? While on average our users pay $1,121, our data indicates the cheapest price to be $117. The most popular route (Boise Air Term. Gowen Fld - Denver Intl), is priced around $211.

  • 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, October is the cheapest month in which you can book a flight from Boise to Denver (average of $197). Flying from Boise 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 Boise?

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

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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 juin 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$141FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$261FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$191Average$387FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$198Average$314FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$205Average$285FlexibilityNo cancel feeOn-time63%

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