BOI - DEN

$99 Find Cheap Flights from Boise to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Denver departing on 8/7. 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 Denver

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

Cheap Flights from Boise to Denver (BOI-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Denver 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 Boise to Denver

Fri, Aug 22 - Sun, Aug 24
Frontier Logo
12:27 pm - 2:27 pmBOI-DEN
2h 00mnonstop
Frontier Logo
9:36 am - 11:32 amDEN-BOI
1h 56mnonstop
$149Frontier
Find Deal
Thu, Aug 7 - Sun, Aug 10
Frontier Logo
12:36 pm - 2:36 pmBOI-DEN
2h 00mnonstop
Frontier Logo
9:50 am - 11:46 amDEN-BOI
1h 56mnonstop
$159Frontier
Find Deal
Tue, Sep 30 - Mon, Oct 6
Alaska Airlines Logo
6:35 am - 12:10 pmBOI-DEN
5h 35m1 stop
Alaska Airlines Logo
7:02 pm - 11:57 pmDEN-BOI
4h 55m1 stop
$210Alaska Airlines
Find Deal
Tue, Aug 5 - Thu, Aug 7
Southwest Logo
4:05 pm - 6:00 pmBOI-DEN
1h 55mnonstop
Southwest Logo
8:15 am - 10:10 amDEN-BOI
1h 55mnonstop
$211Southwest
Find Deal
Sat, Oct 4 - Mon, Oct 6
Alaska Airlines Logo
6:30 am - 11:55 amBOI-DEN
5h 25m1 stop
Alaska Airlines Logo
7:02 pm - 11:57 pmDEN-BOI
4h 55m1 stop
$217Alaska Airlines
Find Deal
Sat, Aug 9 - Mon, Aug 11
United Airlines Logo
2:32 pm - 4:29 pmBOI-DEN
1h 57mnonstop
United Airlines Logo
7:35 pm - 9:34 pmDEN-BOI
1h 59mnonstop
$221United Airlines
Find Deal
Tue, Jul 22 - Tue, Aug 5
United Airlines Logo
2:32 pm - 4:29 pmBOI-DEN
1h 57mnonstop
United Airlines Logo
4:08 pm - 6:07 pmDEN-BOI
1h 59mnonstop
$222United Airlines
Find Deal
Sun, Aug 10 - Mon, Aug 11
Southwest Logo
5:25 am - 7:15 amBOI-DEN
1h 50mnonstop
Southwest Logo
10:10 pm - 12:05 amDEN-BOI
1h 55mnonstop
$230Southwest
Find Deal
Wed, Aug 27 - Tue, Sep 2
Delta Logo
6:00 am - 9:14 amBOI-DEN
3h 14m1 stop
Delta Logo
6:25 pm - 9:42 pmDEN-BOI
3h 17m1 stop
$231Delta
Find Deal
Sat, Aug 9 - Mon, Aug 11
Delta Logo
5:40 am - 9:24 amBOI-DEN
3h 44m1 stop
Delta Logo
5:45 am - 9:45 amDEN-BOI
4h 00m1 stop
$241Delta
Find Deal
Expert advice

Expert advice for your flight from Boise to Denver

 
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

United's Economy Plus offers up to 6 inches more legroom than standard economy seats.


Purchase Priority Boarding to secure Zone 2 and avoid gate-checking your carry-on.

Southwest

Southwest allows two free checked bags up to 50 pounds each, including bulky items.


Set an alarm to check in 24 hours before for a better boarding position.

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
Useful Info

KAYAK's insights & trends for Boise to Denver flights

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

Find cheap flights to Denver
Find cheap flights to Denver

Planning a trip from Boise to Denver? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

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

If your flying dates are flexible, you should consider flying to Denver on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Boise to Denver. For your return ticket, we recommend flying on a Sunday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Denver, 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 Boise to Denver is May, where tickets cost $254 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $348 and $342 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Denver, 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 Boise to Denver, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonFebruary
High seasonJune
Cheapest flight$99
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Boise to Denver

When to book flights from Boise to Denver

Are your dates flexible? Find out the best times to travel from Boise to Denver 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 Boise to Denver

  • What transportation means are available from DEN to the Denver city center?

    Airport rail takes about 37 minutes. You'll find them adjacent to Westin Denver International Airport at level 1. Rental cars are at Island 4, Terminal level 5, for passengers who desire a convenient and private means of transport. You will find taxis at Island 1 outside doors 507 and 510, taking approximately 25 minutes to the city center. You can also board the bus at the transit center at level 1 on the South end of Jeppesen terminal.

  • Which airline gives special assistance to passengers with disability for flights from Boise to Denver?

    Alaska Airlines requires passengers with disability to inform them of the services they need before the flight. You should arrive at the airport at least 2 hours before departure. There are wheelchairs and wheelchair escorts at the airport to assist customers. Passengers who are hard of hearing should identify themselves at the gate and on board to ensure they do not miss important flight information. The visually impaired passengers receive assistance to and from the gates to connect flights and on and off the aircraft. Alaska Airlines doesn't allow more than two service dogs. They require you to make service animal travel requests at least five days before departure.

  • Which airlines are pet-friendly from Boise to Denver?

    Pet lovers traveling from Boise to Denver using Spirit Airlines can travel with small cats, dogs, or household birds. The weight of the pet and the carrier should not exceed 40 lbs. Passengers can carry a maximum of one pet carrier and two pets. Pets do not travel as checked baggage with Spirit Airlines. You will be charged extra for any pet carrier exceeding 18x14x9 inches.

  • Which airline is family-friendly from Boise to Denver?

    Families traveling with kids from Boise to Denver using United Airlines should purchase a ticket and seat for children older than two. Infants can sit on the adult's lap or have their seat if they have an FAA-approved car seat. Ranger Rick's travels kit with crayons and a toy helps distract and engage children through the flight. Breastfeeding mothers will receive ice to store formula and breast milk for free.

  • What is the cheapest flight from Boise to Denver?

    In the last 3 days, the lowest price for a flight from Boise to Denver was $99 for a one-way ticket and $149 for a round-trip.

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

    No

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

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

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

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Boise to Denver flight route.

  • Which airline alliances offer flights from Boise to Denver?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Boise to Denver are Southwest and Delta. With an average price for the route of $285 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 $261 and an overall rating of 8.0.

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

    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 Boise to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Boise 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 Boise to Denver?

    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 Denver with an airline and back to Boise with another airline. Booking your flights between Boise and DEN 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 Boise to Denver?

    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 Denver from Boise 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 Boise to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $180 or less one-way and $332 or less round-trip.
  • Boise Airport (BOI) has three main terminals. The Main Terminal is for private planes and general aviation. Concourses B and C are for commercial flights. United, American, Delta, Allegiant, and Spirit Airlines flights depart from Concourse B, while Concourse C serves Alaska Airlines.
  • Denver International Airport (DEN) is one of the major airports in the US. It serves Colorado, Aurora, Front Range Urban Corridor, and metropolitan Denver. Aurora is about 12 miles from DEN. Denver and Colorado Springs are about 18 and 71 miles from DEN, respectively.
  • Minors traveling unaccompanied require a reservation with Southwest Airlines’ minor unaccompanied program. You will be required to give details of the child's name, your relationship to the child, their address, and paperwork to prove their age. It applies to children between five and 11 years old.
  • United Airlines passengers can bring two items into the cabin at no charge. The items include one personal effect and carry-on bag with a maximum dimension of 9 × 10 × 17 inches and 9 × 14 × 22 inches, respectively. The weight limit should be about 22 lb.
  • Passengers flying with United Airlines can fly with United Polaris, Business, Premium Plus, and Economy Plus. Upgrading to United Polaris gives you access to luxurious amenities like a cozy bed, a hot meal, and silk pajamas. Business class passengers get two bag carry-on allowance and a hot meal. Economy Plus has spacious seats with extra legroom.

Prefer to fly direct from Boise to Denver?

Find which airlines fly direct from Boise Air Term. Gowen Fld Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

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, Lufthansa, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Lufthansa, +2 more

Air Canada, Copa Airlines, +3 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights

Direct returns

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, Lufthansa, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Lufthansa, +2 more

Air Canada, Copa Airlines, +3 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights
See more direct flights

Top 5 airlines serving from Boise to Denver

 
See real verified KAYAK customer reviews for airlines flying from Boise to Denver. 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 Boise to Denver? 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
7.1Entertainment
8.5Crew
7.8Comfort
8.1Boarding
7.1Food
Airline reviews

Thank you still providing bags for vomit. My son had a migraine and needed a bag to vomit in and it was right there behind the seat in front of us. Thank you!

8.0 ExcellentAnonymous, Jun 2025LAX - PDX
Read more Alaska Airlines reviews

Thank you still providing bags for vomit. My son had a migraine and needed a bag to vomit in and it was right there behind the seat in front of us. Thank you!

Flight was delayed 5 hours. Missed connecting flight. Very little apology or attempt to make anything better. Got a $150 credit for next flight. There won’t be another flight. First time on Alaska - last time. Keep your credit. Should have done something more

Horrible! No blanket or pillow available! We had bulkhead seats but the seats were worn out and no cushion old. No meal or even a sandwich for our 5 hour flight just a little bag of pretzels. Crabby attendant female with long brown hair. We will not book Alaska Airlines again

It sucks, flight delays at FAT caused us to miss a day at lodge and overnight in Seattle. Flight delays coming home also. Never again

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

On time, smooth take off and landing, efficient boarding. Gate staff excellent, stewardess grumpy, but civil enough.

No WiFi available. It was too late to order food also. Guy next to me was huge (not fat) so had his shoulder & thigh next to me the whole way. Plane was delayed leaving PDX due to 8 other planes waiting. Not my best Alaska airlines flight.

Very pleasant and the flight felt like it went by quick

We waited over an hour for our luggage to arrive at the carousel in Seattle.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Stuck in Phoenix for two days, not even a hotel voucher offered.

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

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

Information on your arrival and departure airports

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