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$38+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 August or May, booked 64 days in advance, depart on a Thursday or Friday 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 September 11, 2025.

Round-trip from

$103
(Trip.com)

One-way from

$38
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$285

Good round-trip deal

$302 or less

Good one-way deal

$167 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. 4% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
Search Deals
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 September 11, 2025.

This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:33 pmBOI - DEN
Nonstop2h 00mMultiple Airlines
Sat 11/1511:31 amDEN - BOI
1 stop5h 40mMultiple Airlines
Deal found 9/10$103
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/1612:28 pmBOI - DEN
Nonstop2h 00mFrontier
Sun 10/199:48 amDEN - BOI
Nonstop1h 55mFrontier
Deal found 9/10$107
This Frontier deal was found by Cheapflights users on 9/10. 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.
Sun 10/2612:28 pmBOI - DEN
Nonstop2h 00mFrontier
Thu 10/309:53 amDEN - BOI
Nonstop1h 55mFrontier
Deal found 9/10$108
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/212:22 pmBOI - DEN
Nonstop2h 23mFrontier
Thu 10/99:48 amDEN - BOI
Nonstop1h 55mFrontier
Deal found 9/10$116
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 9/302:39 pmBOI - DEN
Nonstop1h 56mUnited Airlines
Wed 10/87:46 amDEN - BOI
Nonstop2h 07mUnited Airlines
Deal found 9/10$117
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:28 amBOI - DEN
1 stop5h 59mMultiple Airlines
Thu 11/69:53 amDEN - BOI
Nonstop1h 55mMultiple Airlines
Deal found 9/9$120
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/912:28 pmBOI - DEN
Nonstop2h 00mFrontier
Sun 10/129:48 amDEN - BOI
Nonstop1h 55mFrontier
Deal found 9/10$125
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Fri 10/39:26 pmBOI - DEN
1 stop13h 14mMultiple Airlines
Thu 10/99:48 amDEN - BOI
Nonstop1h 55mMultiple Airlines
Deal found 9/10$127
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 12/2310:42 amBOI - DEN
Nonstop2h 10mUnited Airlines
Thu 1/87:45 amDEN - BOI
Nonstop2h 21mUnited Airlines
Deal found 9/10$133
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:15 pmBOI - DEN
Nonstop1h 50mSouthwest
Tue 10/289:25 pmDEN - BOI
Nonstop1h 55mSouthwest
Deal found 9/10$136
This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 10/224:46 pmBOI - DEN
1 stop6h 28mDelta
Sat 10/255:30 amDEN - BOI
1 stop4h 47mDelta
Deal found 9/11$137

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 September 11, 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

Sat 10/18

5:25 am-11:28 am

1 stop6h 03m

Denver Intl

Wed 10/22

6:25 am-1:20 pm

1 stop6h 55m

$137

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Sun 11/2

5:28 am-11:27 am

1 stop5h 59m

Denver Intl

Thu 11/6

3:37 pm-10:20 pm

1 stop6h 43m

$148

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Wed 10/15

6:00 am-9:29 am

1 stop3h 29m

Denver Intl

Fri 10/17

5:30 am-10:17 am

1 stop4h 47m

$153

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 11/14

3:54 pm-11:59 pm

1 stop8h 05m

Denver Intl

Sun 11/16

6:05 am-1:09 pm

1 stop7h 04m

$169

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Mon 10/20

4:46 pm-11:14 pm

1 stop6h 28m

Denver Intl

Fri 10/24

5:30 am-10:17 am

1 stop4h 47m

$169

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Sat 10/4

2:05 pm-6:56 pm

1 stop4h 51m

Denver Intl

Tue 10/7

6:23 pm-11:59 pm

1 stop5h 36m

$169

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 10/23

11:41 am-6:56 pm

1 stop7h 15m

Denver Intl

Mon 10/27

6:25 am-1:20 pm

1 stop6h 55m

$169

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 10/31

2:00 pm-6:56 pm

1 stop4h 56m

Denver Intl

Mon 11/3

12:25 pm-8:16 pm

1 stop7h 51m

$169

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Fri 11/7

4:00 pm-11:49 pm

1 stop7h 49m

Denver Intl

Sun 11/9

6:05 am-1:09 pm

1 stop7h 04m

$169

BoiseDenver

BOI - DEN

BOIDEN

Boise Air Term. Gowen Fld

Thu 11/13

5:40 pm-7:30 pm

Nonstop1h 50m

Denver Intl

Sat 11/15

7:45 am-9:50 am

Nonstop2h 05m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 24 results
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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 August 29, 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 September 11, 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 13% on your trip compared to booking a flight at noon.

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 September 7, 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. Friday evenings 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 Boise to Denver?

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 September 11, 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
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 12 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 53m.

  • 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.

  • How long is the flight from Boise to Denver?

    Airlines like Delta and Hawaiian Airlines fly from Boise to Denver in about 5h 59m. The time it takes to get you to your destination can typically vary by up to 04m. The distance between Boise and Denver is about 647 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $64, 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 $136 and $154, respectively. These flights start at 77% 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 Southwest, with whom users have recently found tickets for as low as $59. However, be on the lookout for offers from United 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 (85%), United Airlines (79%), Air Canada( 74%).

  • What are the cheapest flights from Boise to Denver?

    Looking for the cheapest flight from Boise to Denver? While on average our users pay $747, our data indicates the cheapest price to be $79. The most popular route (Boise Air Term. Gowen Fld - Denver Intl), is priced around $107.

  • 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$64Average$137FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$254FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$154Average$407FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$197Average$316FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$281FlexibilityNo cancel feeOn-time63%

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