DEN - BOI

$38 Find Cheap Flights from Denver to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Boise departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Boise

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Boise, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Boise, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Denver to Boise (DEN-BOI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Boise that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Boise

Fri, Oct 3 - Sun, Oct 5
Frontier Logo
9:38 am - 11:37 amDEN-BOI
1h 59mnonstop
Frontier Logo
12:22 pm - 2:45 pmBOI-DEN
2h 23mnonstop
$73Frontier
Find Deal
Fri, Oct 3 - Sun, Oct 5
Frontier Logo
9:38 am - 11:37 amDEN-BOI
1h 59mnonstop
Frontier Logo
12:22 pm - 2:45 pmBOI-DEN
2h 23mnonstop
$74Frontier
Find Deal
Tue, Oct 28 - Mon, Nov 3
Alaska Airlines Logo
11:31 am - 5:11 pmDEN-BOI
5h 40m1 stop
Alaska Airlines Logo
6:05 pm - 11:59 pmBOI-DEN
5h 54m1 stop
$130Alaska Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
United Airlines Logo
11:34 am - 1:33 pmDEN-BOI
1h 59mnonstop
United Airlines Logo
5:39 pm - 7:40 pmBOI-DEN
2h 01mnonstop
$133United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
Delta Logo
5:45 am - 10:48 amDEN-BOI
5h 03m1 stop
Delta Logo
5:55 pm - 10:25 pmBOI-DEN
4h 30m1 stop
$137Delta
Find Deal
Wed, Oct 8 - Sat, Oct 11
Southwest Logo
8:50 am - 10:45 amDEN-BOI
1h 55mnonstop
Southwest Logo
2:50 pm - 4:40 pmBOI-DEN
1h 50mnonstop
$141Southwest
Find Deal
Tue, Oct 28 - Mon, Nov 3
Southwest Logo
9:25 pm - 11:20 pmDEN-BOI
1h 55mnonstop
Southwest Logo
3:45 pm - 8:40 pmBOI-DEN
4h 55m1 stop
$143Southwest
Find Deal
Fri, Nov 14 - Sun, Nov 16
Alaska Airlines Logo
6:46 pm - 11:59 pmDEN-BOI
5h 13m1 stop
Alaska Airlines Logo
6:05 pm - 11:59 pmBOI-DEN
5h 54m1 stop
$148Alaska Airlines
Find Deal
Fri, Oct 24 - Tue, Oct 28
Delta Logo
5:30 am - 10:17 amDEN-BOI
4h 47m1 stop
Delta Logo
4:00 pm - 11:49 pmBOI-DEN
7h 49m1 stop
$153Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
11:34 am - 1:33 pmDEN-BOI
1h 59mnonstop
United Airlines Logo
5:39 pm - 7:40 pmBOI-DEN
2h 01mnonstop
$187United Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
Southwest offers two free checked bags for families.
United's Economy Plus provides extra legroom benefits.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $73 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 50% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 23% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$73
Overall average: $302
Frontier
Fri 10/3Sun 10/5
DEN - BOI • Non-stop
Cheapest one-way
$38
Typical prices: $138-282
Frontier
Fri 10/24
DEN - BOI • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boise!
Expert advice

Expert advice for your flight from Denver to Boise

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

Consider Economy Plus for up to six inches more legroom than standard economy seats.


Purchase Priority Boarding to ensure overhead bin space for your carry-on.

Southwest

Southwest offers free snacks and soft drinks, with Wi-Fi available for streaming entertainment.


Southwest's Rapid Rewards program features unlimited rewards seats and points that don’t expire.

Read more about Southwestby Blane Bachelor
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Booking Insights

KAYAK's insights & trends for Denver to Boise flights

Get data-powered insights and trends into flights from Denver to Boise to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to Boise?

The average price of all round-trip flights from Denver to Boise clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Denver to Boise, look for departures on Sundays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Boise, Thursday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Boise, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Boise is July, where tickets cost $230 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $437 and $391 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Boise, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Boise, you should book around 4 weeks before departure, which saves you about 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$38
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Denver to Boise

When to book flights from Denver to Boise

Are your dates flexible? Find out the best times to travel from Denver to Boise based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Boise

  • How can I fly from DEN to BOI?

    United Airlines and Southwest are two airlines that operate non-stop flights from DEN to BOI. Delta, Spirit Airlines, American Airlines, Alaska Airlines, and Frontier are examples of some of the airlines that operate flights from DEN to BOI with one stop in between. Layover cities include Seattle (SEA), Salt Lake City (SLC), San Francisco (SFO), Los Angeles (LAX), and Phoenix (PHX).

  • Does BOI have facilities for nursing mothers?

    Yes. Pre-security, BOI has a Mamava lactation pod for nursing mothers. This 4X8 freestanding unit is private, clean, and lockable. It has two benches, a shelf, a mirror, a coat hook, and an outlet. Beyond security, BOI also has a lactation room. This sanitized, private location has a changing station, a chair, and a sink.

  • How do I get from BOI into downtown Boise?

    Buses run from BOI into downtown Boise to the intersection of West River Street and South Capitol Boulevard. Bus 3 can get you there in about 10min and bus 4 can get you there in about 20min. The Boise Taxi Company frequents the Arrivals lanes at BOI and often takes fares into Boise on a trip that lasts about 8min.

  • Does DEN have an animal therapy program?

    Yes. In fact, the DEN CATS (Canine Airport Therapy Squad) has about 80 dogs and one cat teamed with trained handlers. These teams roam the airport offering solace and comfort to passengers who might be feeling anxious, stressed, bereaved, or confused. These animals are recognizable in their plaid vests of bright purple that say, “Pet me.”

  • What is the cheapest flight from Denver to Boise?

    In the last 3 days, the lowest price for a flight from Denver to Boise was $38 for a one-way ticket and $73 for a round-trip.

  • Do I need a passport to fly between Denver and Boise?

    A passport is not required to fly from Denver to Boise.

  • Which airports will I be using when flying from Denver to Boise?

    Denver and Boise are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at Boise Air Term. Gowen Fld.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Boise?

    American Airlines, Alaska Airlines, and JetBlue offer inflight Wi-Fi service on the Denver to Boise flight route.

  • Which aircraft models fly most regularly from Denver to Boise?

    The Boeing 737-900 is the aircraft model that flies most regularly on the Denver to Boise flight route.

  • Which airline alliances offer flights from Denver to Boise?

    Star Alliance is the only airline alliance operating flights between Denver and Boise.

  • On which days can I fly direct from Denver to Boise?

    There are nonstop flights from Denver to Boise on a daily basis.

  • Which is the best airline for flights from Denver to Boise, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Boise are Southwest and Alaska Airlines. With an average price for the route of $287 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $235 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Denver to Boise?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Boise.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Boise?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Boise?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boise with an airline and back to Denver with another airline. Booking your flights between Denver and BOI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Boise?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boise from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Boise

  • Looking for a cheap flight? 25% of our users found flights on this route for $131 or less one-way and $133 or less round-trip.
  • Denver International Airport (DEN) serves as a hub for United Airlines and Frontier Airlines. It also serves as a focus city for Southwest Airlines. Boise Airport - Boise Air Terminal - Gowen Field (BOI) is not a hub for any airlines, but it is a focus city for Alaska Airlines.
  • As you're traveling through BOI, you can appreciate the work of Idaho artists at the Art Source Gallery. The gallery is located on the second floor of Concourse B.
  • If you are traveling with a service animal or pet who needs to go to the bathroom as soon as you land at BOI, you can take advantage of either of the two animal relief stations at the airport. One of them is located Landside, outside the baggage claim, on the first floor, to the west. The other animal relief area is Airside.
  • If you want to stay near the DEN the night before your flight to BOI, consider staying at the Westin Hotel at Denver International Airport. This hotel is on airport grounds and connected to the airport. Aside from its convenient proximity to the airport, this hotel has a pool and a restaurant.
  • In Terminal A, DEN features a USO lounge that welcomes active duty, reserve, guard, or dependents with a US military ID card. Open from 7 am to 7 pm, this USO offers coffee and tea, snacks, beverages, charging stations, Wi-Fi, TV, comfy seating, a sleeping area, and flight boards.

Prefer to fly direct from Denver to Boise?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to Boise Air Term. Gowen Fld.
Find which airlines fly direct from Denver Intl Airport to Boise Air Term. Gowen Fld Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Boise Air Term. Gowen Fld

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines, Frontier

Southwest, United Airlines, +1 more

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Friday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

See more direct flights

Direct returns

Boise Air Term. Gowen Fld to Denver Intl

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines, Frontier

Southwest, United Airlines, +1 more

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Friday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

See more direct flights

Reviews of the top 5 airlines serving from Denver to Boise

 
See real verified KAYAK customer reviews for airlines flying from Denver to Boise. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Boise? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
8.1Boarding
7.8Comfort
7.1Food
8.5Crew
7.0Entertainment
Airline reviews

My flight was delayed 2 hours which led me to lose my connection. As a consequence, I had to spend hours changing flights and hotel reservations to arrange my arrival to Vancouver.

2.0 MediocreAnonymous, Sep 2025BWI - SEA
Read more Alaska Airlines reviews

My flight was delayed 2 hours which led me to lose my connection. As a consequence, I had to spend hours changing flights and hotel reservations to arrange my arrival to Vancouver.

No Free Wifi and the flight was a tad late.

The plane was clean. They got us to the destination. It was very difficult to hear the announcements at the gate. The person was speaking way too quickly, and the sound system did not carry to all parts of the seating area at the gate. The flight left more than an hour late, which left many of the passengers missing connections.

Awesome. Great flight. Super nice people and I like the extra space

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

Flight was delayed as it always is with Alaska airlines. Particularly to smaller airports. No AC on the plane so it was miserably hot.

Website could be better with faster access to specific flight information and boarding pass once reservation is made. Not a fan of no seat selection on line. I had to consult gate agent each time to change seats on flights with lots of open seats. This cannot possibly be cost effective for airline. On plus side, Alaska seat legroom seemed larger than American. ns

The flights left both airports on schedule. The flight from Idaho Falls to Seattle was a typical commuter trip. The flight from Seattle to Maui was not good: It was too long for a flight in a single-aisle plane and too cramped. I kept asking myself if I would ever visit Maui again if airlines continue to run this long flight like a typical short commuter flight. I am not looking forward to the trip home.

The chicken salad was very small, the lettuce was wilted and there was no flavor. The hamburger was excellent.

I appreciated that the staff went out of the way to make sure I was taken care of.

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

Very bad! No good service delayed my second connection flight

Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.

2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

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

Information on your arrival and departure airports

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