BUF - DEN

C$ 151 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 25/5. 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

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, 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 Buffalo to Denver, as well as popular online travel agencies
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Cheap Flight Deals 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.

Recent round-trip flight deals from Buffalo to Denver

KAYAK's recommended round-trip deals from the most popular airlines that fly from Buffalo to Denver.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
United Airlines Logo
8:33 a.m. - 10:09 a.m.BUF-DEN
3h 36mdirect
United Airlines Logo
5:40 p.m. - 10:56 p.m.DEN-BUF
3h 16mdirect
C$ 300United Airlines
Find Deal
Tue, 23 Sep - Sun, 28 Sep
United Airlines Logo
5:51 p.m. - 11:30 p.m.BUF-DEN
7h 39m1 stop
United Airlines Logo
5:35 p.m. - 10:45 p.m.DEN-BUF
3h 10mdirect
C$ 314United Airlines
Find Deal
Thu, 5 Jun - Sat, 7 Jun
Delta Logo
6:30 a.m. - 9:33 a.m.BUF-DEN
5h 03m1 stop
Delta Logo
12:55 a.m. - 8:22 a.m.DEN-BUF
5h 27m1 stop
C$ 328Delta
Find Deal
Sun, 25 May - Thu, 12 Jun
Southwest Logo
8:20 p.m. - 11:25 p.m.BUF-DEN
5h 05m1 stop
Southwest Logo
6:40 p.m. - 11:45 p.m.DEN-BUF
3h 05mdirect
C$ 341Southwest
Find Deal
Sat, 2 Aug - Sun, 3 Aug
JetBlue Logo
12:44 p.m. - 9:30 p.m.BUF-DEN
10h 46m1 stop
JetBlue Logo
11:25 a.m. - 11:59 p.m.DEN-BUF
10h 34m1 stop
C$ 347JetBlue
Find Deal
Sat, 24 May - Sat, 14 Jun
Southwest Logo
7:20 p.m. - 10:25 p.m.BUF-DEN
5h 05m1 stop
Southwest Logo
7:45 p.m. - 12:50 a.m.DEN-BUF
3h 05mdirect
C$ 355Southwest
Find Deal
Tue, 3 Jun - Tue, 10 Jun
Delta Logo
12:20 p.m. - 5:39 p.m.BUF-DEN
7h 19m1 stop
Delta Logo
12:55 a.m. - 8:22 a.m.DEN-BUF
5h 27m1 stop
C$ 357Delta
Find Deal
Sat, 24 May - Wed, 11 Jun
Frontier Logo
5:24 p.m. - 7:13 p.m.BUF-DEN
3h 49mdirect
Frontier Logo
11:13 a.m. - 4:29 p.m.DEN-BUF
3h 16mdirect
C$ 464Frontier
Find Deal
Fri, 23 May - Mon, 26 May
Frontier Logo
3:51 p.m. - 11:04 p.m.BUF-DEN
9h 13m1 stop
Frontier Logo
12:30 a.m. - 10:48 a.m.DEN-BUF
8h 18m1 stop
C$ 476Frontier
Find Deal
Thu, 8 May - Fri, 9 May
American Airlines Logo
6:10 a.m. - 1:32 p.m.BUF-DEN
9h 22m1 stop
American Airlines Logo
11:59 p.m. - 11:16 a.m.DEN-BUF
9h 17m1 stop
C$ 489American Airlines
Find Deal
Fri, 23 May - Mon, 26 May

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 specific 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 two free checked bags up to 50 pounds each, ideal for travelers with luggage.


Download the Southwest app for free in-flight messaging and entertainment streaming options.

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

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.

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

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 September, where tickets cost C$ 328 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is C$ 575 and C$ 535 respectively.

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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

January

High season

July

Cheapest flight

C$ 151
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly and prices are also 7% 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 C$ 109 for a one-way ticket and C$ 217 for a round-trip.

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

    Buffalo airport is called Buffalo and the only airport in Denver is Denver Intl.

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

    JetBlue, American Airlines, Delta, United Airlines, 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?

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

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

    There are direct 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 C$ 554 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 C$ 369 and an overall rating of 8.0.

  • 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.

  • 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.

See more FAQs

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 C$ 262 or less one-way and C$ 383 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.
See more tips

Prefer to fly direct from Buffalo to Denver?

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

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines,Frontier

Southwest,United Airlines, +1 more

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more nonstop flights

Direct returns

Denver Intl to Buffalo

Monday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines,Frontier

Southwest,United Airlines, +1 more

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more nonstop flights
See more nonstop flights

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 4287 reviews
8.0Comfort
7.1Food
8.2Boarding
8.6Crew
7.6Entertainment
Airline reviews

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

8.0 ExcellentJonathan, Apr 2025AUS - MSY
Read more Southwest reviews

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

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

WiFi on the flight was not working. Thus, entertainment options were limited.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

It was 2 hours 45 minutes late, for no apparently clear reason.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Delta flight was on time, seats were comfortable, and crew was nice.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Seats were really tight and the seat belts did not give enough slack.

The dear was very limited in space. I could put my water bottle in seat basket. Also, there was no inflight entertainment in the delta app?

Customer service at the gate in the flight was exceptional. On time. Aircraft and seat was decent. Thanks Delta. 💗

Crew was nice. Flight was timely. Seats could be better as well as the food considering it’s first class.

The WiFi has been awful on my last few Delta Air Lines flights.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Airline lost my luggage and set me back a day worth of travel due to having to stay in Denver to wait on my luggage

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.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Liked that we left on time for each flight. Snacks not the best, but we're okay.

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.

One of the best flights I’ve had. So smooth.

Delays on all NY flights. There was no communication on why but they didn’t say it was weather. Other carriers were not delayed.

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

They cancelled our flight without warning OR a refund. Never doing business with American Airlines again! This is the second AA booked trip in a row that we've had challenges with.

I got bumped due to weight restrictions even tho there were empty seats on my flight. I got put on an other flight with a stopover. My flight that originally was going to take 5-6 hours ever up being 14+ hours and my luggage arrived to my destination without me because I was made to check in my luggage on my original flight when I was deemed ok to board only to be asked to deplane. Worst flight experience.

I was pleasantly surprised with an upgrade at boarding. I finally had a mostly gluten free food options and a very attentive attendant.

It was good. It’s been a long time since my wife and I fly any where and things have changed. Our trip was to see our new grandson. We fly economy and that was not good for my bad back. It was a quick flight but uncomfortable.

Staff at the gate were incredibly rude, hostile and threatening. Never fly American Airlines.

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

Flight got delayed for 3.5 hours, and for the first hour after the departure time there was no update from the gate folks...

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

Information on your arrival and departure airports

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