BOI - DEN

$24 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 2/13. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$107
Overall average: $305
Frontier
Thu 12/18Thu 12/25
BOI - DEN • Non-stop
Cheapest one-way
$24
Typical prices: $225-$320
Frontier
Fri 2/13
BOI - DEN • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
United's Economy Plus offers extra legroom on this route.
Southwest provides two free checked bags up to 50 pounds.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Denver
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Top airlines
Alaska Airlines
Cheapest • from $176 (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 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 31% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Denver!
Flight Deals
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Flight 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

Thu, Dec 18 - Thu, Dec 25
Frontier Logo
12:38 pm - 2:39 pmBOI-DEN
2h 01mnonstop
Frontier Logo
9:36 am - 11:43 amDEN-BOI
2h 07mnonstop
$107Frontier
Find Deal
Sat, Dec 20 - Thu, Dec 25
Frontier Logo
12:54 pm - 2:55 pmBOI-DEN
2h 01mnonstop
Frontier Logo
9:36 am - 11:43 amDEN-BOI
2h 07mnonstop
$117Frontier
Find Deal
Fri, Jan 23 - Mon, Jan 26
Multiple Airlines Logo
5:40 am - 10:53 amBOI-DEN
5h 13m1 stop
Multiple Airlines Logo
9:10 am - 11:12 amDEN-BOI
2h 02mnonstop
$121Multiple Airlines
Find Deal
Mon, Jan 5 - Fri, Jan 9
Multiple Airlines Logo
9:46 pm - 3:58 amBOI-DEN
6h 12m1 stop
Multiple Airlines Logo
9:10 am - 11:17 amDEN-BOI
2h 07mnonstop
$126Multiple Airlines
Find Deal
Fri, Jan 9 - Mon, Jan 12
Multiple Airlines Logo
7:45 am - 6:41 pmBOI-DEN
10h 56m1 stop
Multiple Airlines Logo
9:10 am - 11:17 amDEN-BOI
2h 07mnonstop
$127Multiple Airlines
Find Deal
Tue, Jan 6 - Sun, Jan 11
Multiple Airlines Logo
5:43 am - 10:35 amBOI-DEN
4h 52m1 stop
Multiple Airlines Logo
9:10 am - 11:17 amDEN-BOI
2h 07mnonstop
$129Multiple Airlines
Find Deal
Fri, Jan 9 - Mon, Jan 12
Multiple Airlines Logo
9:02 am - 4:13 pmBOI-DEN
7h 11m1 stop
Multiple Airlines Logo
9:10 am - 11:17 amDEN-BOI
2h 07mnonstop
$131Multiple Airlines
Find Deal
Thu, Dec 18 - Sat, Dec 27
Frontier Logo
12:38 pm - 2:39 pmBOI-DEN
2h 01mnonstop
Frontier Logo
9:52 am - 11:59 amDEN-BOI
2h 07mnonstop
$132Frontier
Find Deal
Thu, Dec 18 - Sun, Dec 21
Frontier Logo
12:38 pm - 2:39 pmBOI-DEN
2h 01mnonstop
Frontier Logo
9:36 am - 11:43 amDEN-BOI
2h 07mnonstop
$133Frontier
Find Deal
Sun, Dec 7 - Wed, Dec 10
Multiple Airlines Logo
12:44 pm - 2:45 pmBOI-DEN
2h 01mnonstop
Multiple Airlines Logo
6:45 am - 12:45 pmDEN-BOI
6h 00m1 stop
$138Multiple Airlines
Find Deal
Booking Insights

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 Thursday 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 October, where tickets cost $187 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $335 and $305 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 4 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

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


Southwest's Rapid Rewards program offers unlimited rewards seats and no blackout dates.

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.

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Good to know

Low seasonFebruary
Cheapest flight$24
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 3% 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 $24 for a one-way ticket and $107 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?

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

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

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

  • Which airline alliances offer flights from Boise to Denver?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Boise and Denver, with oneworld being the most commonly used for this route.

  • 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 Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Denver are Southwest and Alaska Airlines. With an average price for the route of $282 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 $428 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 $168 or less one-way and $316 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?

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

Southwest, United Airlines, Frontier

Southwest, United Airlines, +1 more

Tuesday

Southwest, United Airlines

Southwest, United Airlines

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

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Sunday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

See more direct flights

Direct returns

Denver Intl to Boise Air Term. Gowen Fld

Monday

Southwest, United Airlines, Frontier

Southwest, United Airlines, +1 more

Tuesday

Southwest, United Airlines

Southwest, United Airlines

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

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Sunday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

See more direct flights

Reviews of the 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 11324 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.0Entertainment
7.1Food
Airline reviews

I love the flight ✈️ Hawaiian Airlines. All stuffs are fantastic members ♡ sweet hearts and families warm welcome 🙏 I have milage of Hawaiian Airlines members so get points .also I booked kayak agent got cheap price ! I satisfied flight with Hawaiian Airlines ♡ thank you

10.0 Excellentmira, Nov 2025HNL - LAX
Read more Alaska Airlines reviews

I love the flight ✈️ Hawaiian Airlines. All stuffs are fantastic members ♡ sweet hearts and families warm welcome 🙏 I have milage of Hawaiian Airlines members so get points .also I booked kayak agent got cheap price ! I satisfied flight with Hawaiian Airlines ♡ thank you

I purchased a 1st class ticket and unfortunately the main flight attendant was not the best and seemed more interested in her phone than the passengers at times. Then the plane didn’t get restocked and the only snacks for this flight were pretzels. However I would like to say that the rest of the flight crew and ground crew at the airport we’re great, especially the people that wheeled me around the airport some and then the one getting me to the plane and the automated wheelchair that wheeled me through the airport.

The small ej plane didn’t have any entertainment aside from the stuff on the Alaska website that has to be accessed from your own device. But everything else was just great.

Last-minute flight delay in originating flight caused me to miss connection in Seattle by 10 minutes....leading to a 7-hour wait. Communication was poor. Boarding: your staff really need to do a better job of making sure that passengers board with their assigned group. I was in group C, and most of us were waiting but people just kept walking into the line, with the result that all the bin space was taken. You should check boarding group with each passenger and if they are trying to cut in early, tell them to wait.

Flight from PSP delayed ~2hs and missed connection. Terrible service providing acommodations & food (no rides - just the hotel van every 30 min, which you have to call). 12 dollars in food for a 9 hour delay. 30+ minutes to get everything sorted out.

Good, but because I fly internationally I found the food and service lousy compared to European standards. You should include a regular small mean (and not a lousy sandwich) and ear phones. People who travel from Europe are not aware of limited services.

Fine. But given how empty the flight was, I do not understand why my dog, in its carrier, could not be placed on the seat next to me (which was empty) rather than on the floor under seat. This seemed like overkill on the rule following by the flight staff.

Typical domestic flight. No entertainment. You have to use your own devices and provided entertainment didn’t work. Pretzels and water of flight over 4 hours is unacceptable. Meals should be provided on long flights. But it’s about the money and not customer service. You should just issue the bag of pretzels at the gate and water bottle in seat and just do away with flight attendants because they do nothing on domestic flights

Very good. Easy check in, attentive flight attendant, and on time departure/landing.

Good. Flight was good. Crew was good. Wish they offered coffee refills. Wish I didn’t have to pay for headphones. Otherwise good for a commercial flight.

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

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.

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

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

My tickets got canceled on me by your site and I didn't have a flight. Then you kept sending me emails on the status of q flight I didn't have tickets for.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

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

Information on your arrival and departure airports