DEN - BOI

$70 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 8/28. 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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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

Thu, Aug 14 - Thu, Aug 21
Frontier Logo
9:50 am - 11:46 amDEN-BOI
1h 56mnonstop
Frontier Logo
12:33 pm - 2:48 pmBOI-DEN
2h 15mnonstop
$82Frontier
Find Deal
Thu, Aug 21 - Fri, Aug 29
Frontier Logo
9:36 am - 11:38 amDEN-BOI
2h 02mnonstop
Frontier Logo
12:33 pm - 2:48 pmBOI-DEN
2h 15mnonstop
$106Frontier
Find Deal
Wed, Aug 20 - Wed, Aug 27
United Airlines Logo
7:45 am - 9:42 amDEN-BOI
1h 57mnonstop
United Airlines Logo
5:00 am - 7:05 amBOI-DEN
2h 05mnonstop
$199United Airlines
Find Deal
Fri, Oct 24 - Sat, Oct 25
Alaska Airlines Logo
7:02 pm - 11:57 pmDEN-BOI
4h 55m1 stop
Alaska Airlines Logo
7:13 am - 2:00 pmBOI-DEN
6h 47m1 stop
$207Alaska Airlines
Find Deal
Wed, Aug 20 - Sat, Sep 27
Alaska Airlines Logo
9:23 pm - 9:28 amDEN-BOI
12h 05m1 stop
Alaska Airlines Logo
6:00 am - 10:44 amBOI-DEN
4h 44m1 stop
$208Alaska Airlines
Find Deal
Tue, Aug 19 - Tue, Aug 26
Southwest Logo
9:10 pm - 11:05 pmDEN-BOI
1h 55mnonstop
Southwest Logo
3:45 pm - 10:30 pmBOI-DEN
6h 45m1 stop
$209Southwest
Find Deal
Tue, Aug 26 - Sat, Aug 30
Southwest Logo
8:25 am - 5:20 pmDEN-BOI
8h 55m2 stops
Southwest Logo
5:10 am - 7:00 amBOI-DEN
1h 50mnonstop
$214Southwest
Find Deal
Thu, Aug 21 - Tue, Aug 26
United Airlines Logo
7:45 am - 9:42 amDEN-BOI
1h 57mnonstop
United Airlines Logo
2:42 pm - 4:35 pmBOI-DEN
1h 53mnonstop
$215United Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 16
Delta Logo
6:25 pm - 11:00 pmDEN-BOI
4h 35m1 stop
Delta Logo
6:00 am - 9:18 amBOI-DEN
3h 18m1 stop
$217Delta
Find Deal
Sat, Sep 6 - Tue, Sep 16
Delta Logo
12:00 pm - 6:16 pmDEN-BOI
6h 16m1 stop
Delta Logo
4:20 pm - 9:42 pmBOI-DEN
5h 22m1 stop
$219Delta
Find Deal
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

Enjoy two free checked bags up to 50 pounds each, ideal for family travel.


Use EarlyBird Check-In for a better boarding position, avoiding middle seats.

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 May, where tickets cost $252 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $443 and $368 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 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$70
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 15% 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 $70 for a one-way ticket and $82 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 Delta?

    The two airlines most popular with KAYAK users for flights from Denver to Boise are Southwest and Delta. With an average price for the route of $289 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $249 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 $134 or less one-way and $200 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

Air Canada, Copa Airlines, Lufthansa, +3 more

Air Canada, Copa Airlines, +4 more

Tuesday

Air Canada, Lufthansa, Southwest, +1 more

Air Canada, Lufthansa, +2 more

Wednesday

Air Canada, Copa Airlines, Lufthansa, +3 more

Air Canada, Copa Airlines, +4 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Lufthansa, Southwest, +1 more

Air Canada, Lufthansa, +2 more

Sunday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

See more direct flights

Direct returns

Boise Air Term. Gowen Fld to Denver Intl

Monday

Air Canada, Copa Airlines, Lufthansa, +3 more

Air Canada, Copa Airlines, +4 more

Tuesday

Air Canada, Lufthansa, Southwest, +1 more

Air Canada, Lufthansa, +2 more

Wednesday

Air Canada, Copa Airlines, Lufthansa, +3 more

Air Canada, Copa Airlines, +4 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Lufthansa, Southwest, +1 more

Air Canada, Lufthansa, +2 more

Sunday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 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
7.1Food
7.8Comfort
8.1Boarding
7.1Entertainment
8.5Crew
Airline reviews

Flight attendant was rude when I advised her that the bathroom had no paper towels or tissue paper.

8.0 ExcellentRick, Jul 2025AUS - SAN
Read more Alaska Airlines reviews

Flight attendant was rude when I advised her that the bathroom had no paper towels or tissue paper.

Crew was very friendly. Our bags showed up at the carousel within 20 minutes of arrival.

Flight was delayed and hour due to tire issue. First flight of the day, this issue should have been discovered prior to boarding.

Both legs of the trip were delayed about an hour. Planes were new, liked the WiFi availability and entertainment available. Crew was very good. People were happy and helpful. Liked the pilots - they provided updates throughout the flights. Snacks were underwhelming. Drinks were good! Like the smaller sodas and they actually came through the cabin 2x which was great. In Seattle airport the construction caused much confusion for Alaska. Process of printing own tags, etc was chaotic for people who didn’t check in online prior to arrival which in turn caused issues for those who did. Plus airport gates were too small for the number of people flying.

Plane was delayed getting boarded and then again delayed in take-off order. Alaska Airlines must have very little clout at JFK so they don't get priority treatment. All the delays meant we missed the last flight from Portland to Eugene. Alaska did give us hotel voucher for the night...but sent us to a downtown Portland hotel rather than to a nearby airport motel which made for a longer ride at night and then again in the morning. Just made an already long, late night even longer. Hotel was an old outdated Hilton in a slightly seedy part of town. Alaska gave us Lyft vouchers for getting to the hotel, but the return voucher for getting back to the airport in the morning didn't work.

Departing flight to San Diego was delayed. Return flight from SD to SBP was delayed. Not terrible but not ideal

We did have to wait an hour for the runway to be cleared but other than that it was fine.

My experience was great with Alaska Airlines. They were very helpful when I was checking in. The flight crew was very helpful with our needs.

Crew members were friendly, but I wouldn’t use “entertaining” to describe them. Exact step by step instructions on getting wi-fi on the phone would be helpful.

Ease of reservations, confirmation. Cramped seating, very, very uncomfortable! Claustrophobic.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

WiFi did not work. For as outrageous as these flights cost, when they’re advertised with certain services/ features they should be in working order

Worst experience I had on Southwest. Still better than most, but the seating was barely tolerable.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

It was okay. The plane was delayed from earlier in the day, but they kept updating the departure time, sometimes later, sometimes earlier. That was stressful. Once we finally got on and took off, it was fine. I was supposed to have a connection in Chicago to Los Angeles, and the time for so late I was rebooked to arrive in LA 3 hours late. The departure time to Chicago later became early enough to have taken my original connection and arrive earlier but that wasn't an option.

It was one and half hour late... Not sure if any other experience matters.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

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!

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.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

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

Information on your arrival and departure airports

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