BUF - DEN

$63 Find Cheap Flights from Buffalo 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 Buffalo to Denver departing on 2/6. 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 Buffalo to Denver.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Denver.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$170
Typical prices: $230-$417
Frontier
Sat 11/15Wed 11/19
BUF - DEN • 1 stop
Cheapest non-stop
$331
Typical prices: $395-$644
United Airlines
Wed 2/25Wed 3/4
BUF - DEN • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
Frontier's Economy Bundle includes a carry-on and seat.
Southwest offers two free checked bags for luggage.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Denver
Watch video
Watch video
Watch video
Watch video
Top airlines
Frontier
Cheapest • from $170 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 18% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Buffalo to Denver (BUF-DEN)

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

Sat, Nov 15 - Wed, Nov 19
Frontier Logo
7:12 pm - 8:15 amBUF-DEN
15h 03m1 stop
Frontier Logo
12:59 am - 1:06 pmDEN-BUF
10h 07m1 stop
$170Frontier
Find Deal
Thu, Nov 13 - Sun, Nov 16
Frontier Logo
8:54 pm - 8:43 amBUF-DEN
13h 49m1 stop
Frontier Logo
12:16 am - 11:44 amDEN-BUF
9h 28m1 stop
$176Frontier
Find Deal
Thu, Nov 13 - Sun, Nov 16
Frontier Logo
8:54 pm - 8:43 amBUF-DEN
13h 49m1 stop
Frontier Logo
9:15 am - 11:44 amDEN-BUF
24h 29m1 stop
$182Frontier
Find Deal
Fri, Nov 14 - Sun, Nov 16
Frontier Logo
12:29 pm - 7:26 pmBUF-DEN
8h 57m1 stop
Frontier Logo
12:59 am - 1:37 pmDEN-BUF
10h 38m1 stop
$183Frontier
Find Deal
Fri, Nov 14 - Sat, Nov 15
Frontier Logo
2:42 pm - 9:28 pmBUF-DEN
8h 46m1 stop
Frontier Logo
12:59 am - 1:47 pmDEN-BUF
10h 48m1 stop
$194Frontier
Find Deal
Sat, Nov 15 - Sun, Nov 16
Frontier Logo
7:12 pm - 8:15 amBUF-DEN
15h 03m1 stop
Frontier Logo
12:59 am - 1:37 pmDEN-BUF
10h 38m1 stop
$196Frontier
Find Deal
Sat, Dec 6 - Sat, Dec 13
JetBlue Logo
6:29 pm - 11:05 amBUF-DEN
18h 36m1 stop
JetBlue Logo
11:28 pm - 9:20 amDEN-BUF
7h 52m1 stop
$201JetBlue
Find Deal
Wed, Dec 10 - Sun, Dec 14
JetBlue Logo
6:05 am - 12:35 pmBUF-DEN
8h 30m1 stop
JetBlue Logo
11:28 pm - 9:20 amDEN-BUF
7h 52m1 stop
$227JetBlue
Find Deal
Tue, Jan 13 - Thu, Jan 15
JetBlue Logo
2:45 pm - 10:25 pmBUF-DEN
9h 40m1 stop
JetBlue Logo
11:20 pm - 9:04 amDEN-BUF
7h 44m1 stop
$229JetBlue
Find Deal
Sat, Dec 20 - Sat, Jan 17
Multiple Airlines Logo
8:14 pm - 9:49 pmBUF-DEN
27h 35m2 stops
Multiple Airlines Logo
12:59 am - 12:42 pmDEN-BUF
9h 43m1 stop
$271Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Buffalo to Denver flights

Get data-powered insights and trends into flights from Buffalo 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 Buffalo 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.

How much is a round-trip flight from Buffalo to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Buffalo to Denver departing in November.

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

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

For Buffalo to Denver, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Denver back to Buffalo, the best deals are generally found on Friday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo 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 Buffalo to Denver is August, where tickets cost $270 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $407 and $400 respectively.

Can I save money by flying with a layover from Buffalo to Denver?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $277 on average.

How far in advance should I book a flight from Buffalo 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 Buffalo 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 Buffalo to Denver, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Buffalo 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
Frontier

Frontier's Economy Bundle includes a carry-on bag and seat selection, offering budget-friendly travel.


Frontier's Premium seats offer up to seven inches more legroom, enhancing comfort for longer flights.

Read more about Frontierby Stefanie Waldek
Southwest

Southwest offers free snacks and drinks; download their app for in-flight entertainment.


Southwest's Rapid Rewards offers unlimited rewards seats and no blackout dates, ideal for frequent flyers.

Read more about Southwestby Blane Bachelor
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier

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

Good to know

Low seasonJanuary
Cheapest flight$63
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Buffalo to Denver

When to book flights from Buffalo to Denver

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

  • Where can I relax after arriving in Denver?

    Denver airport features several lounges where you can relax and unwind upon arrival. Some of the lounges are owned by different airlines, while others are owned by DEN airport. For the airline-owned lounges, you need to be a member of the airline or have special access to the lounge. You can enjoy a relaxation moment by visiting any spas available at the airport.

  • Can mothers nurse children at DEN?

    DEN airport features nursing rooms where mothers can nurse children comfortably. The nursing rooms are strategically located at the post-security center. The rooms are available on a 24/7 basis. The comfortable seats mitigate any strains while nursing your baby, not forgetting the wheelchair accessibility of the nursing rooms.

  • Are there complimentary services at BUF?

    Yes, there are several complimentary services at Buffalo airport which include locksmith services, jump-starting vehicle services, driving directions, and flat tire assistance, among others. The complimentary services are offered by different providers.

  • Can I charge my electric vehicle at BUF?

    Yes, BUF airport features different charging stations. There are three charging stations strategically located on Level 1. The electric vehicle charging spots are based on availability. It is advisable to check whether your electric vehicle is compatible with the chargers available. To access the charging spots, your car should be parked.

  • What is the cheapest flight from Buffalo to Denver?

    In the last 3 days, the lowest price for a flight from Buffalo to Denver was $63 for a one-way ticket and $170 for a round-trip.

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

    No

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

    Buffalo and Denver are both served by 1 main airport. You will leave Buffalo from Buffalo and will be arriving at Denver Intl.

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

    American Airlines, JetBlue, Delta, and WestJet offer inflight Wi-Fi service on the Buffalo to Denver flight route.

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

    The Boeing 737-800 is the aircraft model that flies most regularly on the Buffalo to Denver flight route.

  • Which airline alliances offer flights from Buffalo to Denver?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Buffalo to Denver are Southwest and Delta. With an average price for the route of $423 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 $275 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Buffalo 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 Buffalo to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Buffalo 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 Buffalo 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 Buffalo with another airline. Booking your flights between Buffalo 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 Buffalo 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 Buffalo 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 Buffalo to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $131 or less one-way and $264 or less round-trip.
  • The wide array of parking lots at Buffalo Niagara International Airport (BUF) gives you the safety assurance of your parked vehicle while catching your flight to Denver. The parking lots are close to the terminal, which will ease your navigation in and out of the airport. There are different sign colors in the parking lots to distinguish the different types of parking. There are green signs representing preferred lots, red signs for hourly and daily lots, orange signs for long-term lots, and blue signs for economy parking lots.
  • Safety is paramount at BUF; hence anyone entering the premises must undergo thorough security checks. The checks are done to ensure nobody enters the airport premises with an explosive device or a weapon. For a smooth process, it is advisable to cooperate with the security personnel. If possible, arrive 2 or 3h before your flight.
  • At BUF airport, you can stream your favorite movies, hold video conferencing, or browse while waiting for your flight due to the free Wi-Fi connectivity available at the airport. Getting online is seamless as you only need to select the BUF free Wi-Fi network, launch your browser, and sign up for a Wi-Fi account to enjoy unlimited Internet access before catching your flight.
  • If your device’s battery runs low, there are charging poles in gates 4, 5, 7, 9, 10, 16, 18, 23, and 25. The lounge seating area features iPad charging arms. The BUF charging spots are available on a first-come, first-served basis.
  • Denver International Airport (DEN) authorities prohibit smoking on the premises. However, there are designated smoking spots located at the Jeppesen terminal. Smoking after clearing with the security and proceeding to your gate is prohibited.

Prefer to fly direct from Buffalo to Denver?

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

Direct departures

Buffalo to Denver Intl

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Direct returns

Denver Intl to Buffalo

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Buffalo to Denver

 
See real verified KAYAK customer reviews for airlines flying from Buffalo 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 Buffalo 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
SouthwestOverall score based on 4241 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.5Entertainment
7.0Food
Airline reviews

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.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

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.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

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.

The flight was great. The gate location was way to far away!!!

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

I believe that a four-hour trip should have a meal. Delta had none.

Was charged for my luggage despite having been on one ticket from an international flight. Too tired to argue after 15 hours on flight. Was charged for rechecking it at JFK airport. Not sure why those off Kenya Airways were required to do that.

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

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

At first, we were on the runway for about an hour, literally. The Captain did explain that the Control Tower just had a change shift (sounds like an unrealistic excuse) and then that we had to change a runway. A regular economy seat is made for 12 yo twiggy. I understand Delta wants to push for an upgrade, but after sitting in a Comfort seat and in First class. I would say First class is not worthy of my money. The landing was delayed because of the weather in NYC, I don't hold that against Delta, of course. The Captain did alert us to that upon takeoff in Vegas and again as we reached NY.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

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 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.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

We were delayed for a “couple of maintenance issues.” They were resolved rather quickly but a computer glitch caused someone in the airport to have to bring a physical copy of the paperwork so we could leave. I don’t know where they had to drive from to get to our plane but it took forever & we were 1 1/2 hrs late in leaving. The flight itself was fine.

They only offered water for Group 6. Awful announcements from the Crew. Couldn't understand a single word. Barely came by for the trash afterwards. Man, I love water for a premium flight. Wow. Water in a cup.

Because the plane was 90 degrees F, they would not let us board. I wish they had, because it meant we were delayed. It's Texas, of course it's hot. We would have survived.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

Our bags took a long time to get unloaded once we landed.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

Waited on the runway for takeoff for 2.5 hours. Air traffic rerouted us. The plane didn't have enough fuel, so had to go back to the gate. Had to wait for a new pilot. Should have landed at 5:22. Didn't land until 9:10. Trash flight.

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

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 Buffalo to Denver

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.