BUF - DEN

C$ 88 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 21/4. 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$ 365
Overall average: C$ 506
United Airlines
Sun 12/4Wed 15/4
BUF - DEN • Direct
Cheapest one-way flights
C$ 88
Typical prices: C$ 145-C$ 510
Frontier
Tue 21/4
BUF - DEN • 1 stop
Top airlines
Cheapest • from C$ 365 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with United Airlines and Southwest. Average duration is 3h 44m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg C$ 347 (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 3 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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Start a new search
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

Sun, 12 Apr - Wed, 15 Apr
United Airlines Logo
8:30 a.m. - 10:13 a.m.
BUF
-
DEN
3h 43mdirect
United Airlines Logo
5:53 p.m. - 11:10 p.m.
DEN
-
BUF
3h 17mdirect
C$ 365United Airlines
Fri, 22 May - Mon, 8 Jun
Delta Logo
7:31 p.m. - 10:58 p.m.
BUF
-
DEN
5h 27m
1 stop
Delta Logo
11:59 p.m. - 10:35 a.m.
DEN
-
BUF
8h 36m
1 stop
C$ 373Delta
Wed, 27 May - Mon, 8 Jun
Delta Logo
12:18 p.m. - 5:57 p.m.
BUF
-
DEN
7h 39m
1 stop
Delta Logo
12:59 a.m. - 11:15 a.m.
DEN
-
BUF
8h 16m
1 stop
C$ 376Delta
Sun, 12 Apr - Wed, 15 Apr
United Airlines Logo
8:30 a.m. - 10:13 a.m.
BUF
-
DEN
3h 43mdirect
United Airlines Logo
12:34 p.m. - 11:33 p.m.
DEN
-
BUF
8h 59m
1 stop
C$ 379United Airlines
Thu, 4 Jun - Mon, 8 Jun
Delta Logo
7:40 p.m. - 12:33 a.m.
BUF
-
DEN
6h 53m
1 stop
Delta Logo
11:59 p.m. - 10:35 a.m.
DEN
-
BUF
8h 36m
1 stop
C$ 383Delta
Wed, 27 May - Tue, 2 Jun
JetBlue Logo
7:40 a.m. - 1:20 p.m.
BUF
-
DEN
7h 40m
1 stop
JetBlue Logo
11:59 p.m. - 8:58 a.m.
DEN
-
BUF
6h 59m
1 stop
C$ 388JetBlue
Thu, 28 May - Sun, 31 May
Delta Logo
4:55 p.m. - 12:33 a.m.
BUF
-
DEN
9h 38m
1 stop
Delta Logo
12:55 a.m. - 8:20 a.m.
DEN
-
BUF
5h 25m
1 stop
C$ 389Delta
Tue, 31 Mar - Thu, 2 Apr
United Airlines Logo
8:30 a.m. - 10:13 a.m.
BUF
-
DEN
3h 43mdirect
United Airlines Logo
5:53 p.m. - 11:10 p.m.
DEN
-
BUF
3h 17mdirect
C$ 391United Airlines
Fri, 24 Apr - Sun, 26 Apr
United Airlines Logo
8:30 a.m. - 10:13 a.m.
BUF
-
DEN
3h 43mdirect
United Airlines Logo
5:53 p.m. - 11:10 p.m.
DEN
-
BUF
3h 17mdirect
C$ 392United Airlines
Tue, 2 Jun - Sat, 6 Jun
Southwest Logo
6:40 a.m. - 1:05 p.m.
BUF
-
DEN
8h 25m
1 stop
Southwest Logo
11:30 a.m. - 11:10 p.m.
DEN
-
BUF
9h 40m
2 stops
C$ 399Southwest
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.

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 C$ 362 (return) on average. On the other hand, the most expensive months are January and February, where the average cost of round-trip tickets is C$ 602 and C$ 562 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$ 182 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 32% 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$ 88
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 8% 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 3 days, the lowest price for a flight from Buffalo to Denver was C$ 88 for a one-way ticket and C$ 365 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, Delta, American Airlines, WestJet, and Air Canada 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 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$ 575 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 379 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$ 401 or less one-way and C$ 588 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

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

United Airlines

United Airlines

See more nonstop flights

Direct returns

Denver Intl to Buffalo

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

United Airlines

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.
8.0
SouthwestOverall score based on 4317 reviews
8.1Boarding
7.5Entertainment
8.0Comfort
8.6Crew
7.0Food
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

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.

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.

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

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.

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

Information on your arrival and departure airports