BUF - DEN

C$ 133 Find Cheap Flights from Buffalo to Denver – Compare and Save

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 19/8. 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, 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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Everything you should know

Cheapest round-trip
C$ 379
Typical prices: C$ 737-C$ 379
Frontier
Tue 14/7Tue 21/7
BUF - DEN • 1 stop
Cheapest direct flights
C$ 485
Typical prices: C$ 606-C$ 278
United Airlines
Fri 7/8Tue 11/8
BUF - DEN • Direct
Top airlines
Cheapest • from C$ 379 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with Southwest and United Airlines. Average duration is 3h 33m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg C$ 357 (round-trip)
Shortest trip • 6h 15m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
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

Tue, 14 Jul - Tue, 21 Jul
Frontier Logo
11:29 a.m. - 10:05 p.m.
BUF
-
DEN
12h 36m
1 stop
Frontier Logo
11:46 p.m. - 1:53 p.m.
DEN
-
BUF
12h 07m
1 stop
C$ 379Frontier
Mon, 10 Aug - Tue, 18 Aug
JetBlue Logo
6:35 a.m. - 12:57 p.m.
BUF
-
DEN
8h 22m
1 stop
JetBlue Logo
2:05 p.m. - 11:32 p.m.
DEN
-
BUF
7h 27m
1 stop
C$ 382JetBlue
Mon, 24 Aug - Sun, 30 Aug
JetBlue Logo
6:00 a.m. - 1:15 p.m.
BUF
-
DEN
9h 15m
1 stop
JetBlue Logo
11:37 p.m. - 9:34 a.m.
DEN
-
BUF
7h 57m
1 stop
C$ 383JetBlue
Fri, 21 Aug - Sun, 23 Aug
JetBlue Logo
6:00 a.m. - 1:15 p.m.
BUF
-
DEN
9h 15m
1 stop
JetBlue Logo
11:37 p.m. - 9:34 a.m.
DEN
-
BUF
7h 57m
1 stop
C$ 394JetBlue
Wed, 15 Jul - Fri, 17 Jul
Frontier Logo
2:48 p.m. - 10:05 p.m.
BUF
-
DEN
9h 17m
1 stop
Frontier Logo
11:59 p.m. - 11:33 a.m.
DEN
-
BUF
9h 34m
1 stop
C$ 397Frontier
Wed, 15 Jul - Fri, 17 Jul
Frontier Logo
2:48 p.m. - 10:05 p.m.
BUF
-
DEN
9h 17m
1 stop
Frontier Logo
11:59 p.m. - 11:33 a.m.
DEN
-
BUF
9h 34m
1 stop
C$ 399Frontier
Mon, 10 Aug - Fri, 21 Aug
JetBlue Logo
6:35 a.m. - 12:57 p.m.
BUF
-
DEN
8h 22m
1 stop
JetBlue Logo
2:05 p.m. - 11:32 p.m.
DEN
-
BUF
7h 27m
1 stop
C$ 414JetBlue
Thu, 3 Sep - Mon, 7 Sep
Frontier Logo
11:35 a.m. - 10:16 p.m.
BUF
-
DEN
12h 41m
1 stop
Frontier Logo
11:42 p.m. - 10:40 a.m.
DEN
-
BUF
8h 58m
1 stop
C$ 417Frontier
Mon, 20 Jul - Fri, 31 Jul
Frontier Logo
2:48 p.m. - 10:28 p.m.
BUF
-
DEN
9h 40m
1 stop
Frontier Logo
11:59 p.m. - 11:33 a.m.
DEN
-
BUF
9h 34m
1 stop
C$ 418Frontier
Tue, 7 Jul - Sat, 11 Jul
JetBlue Logo
6:40 a.m. - 1:11 p.m.
BUF
-
DEN
8h 31m
1 stop
JetBlue Logo
11:45 p.m. - 7:52 a.m.
DEN
-
BUF
6h 07m
1 stop
C$ 421JetBlue
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.

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 July.

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 October, where tickets cost C$ 358 (return) on average. On the other hand, the most expensive months are January and March, where the average cost of round-trip tickets is C$ 631 and C$ 593 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 C$ 696 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 2 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flightC$ 133
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 26% 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

  • What is the cheapest flight from Buffalo to Denver?

    In the last 5 days, the lowest price for a flight from Buffalo to Denver was C$ 133 for a one-way ticket and C$ 379 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?

    All the following airlines offer inflight Wi-Fi service on the Buffalo to Denver flight route: JetBlue, Delta, American Airlines, United Airlines, WestJet, and Air Canada.

  • 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 United Airlines?

    The two airlines most popular with KAYAK users for flights from Buffalo to Denver are Southwest and United Airlines. With an average price for the route of C$ 697 and an overall rating of 7.9, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 638 and an overall rating of 7.4.

  • 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.

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$ 613 or less round-trip.

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 nonstop 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 nonstop flights

Reviews of the top 3 airlines flying 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.
7.9
SouthwestOverall score based on 4235 reviews
8.0Comfort
7.0Food
7.5Entertainment
8.1Boarding
8.6Crew
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The entertainment options on the seat back video boards were nice.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

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.

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

Information on your arrival and departure airports