BUF - DEN

C$ 157 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 10/3. 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$ 191
Overall average: C$ 500
Frontier
Wed 22/4Sun 26/4
BUF - DEN • 1 stop
Cheapest direct flights
C$ 462
Typical prices: C$ 404-C$ 620
United Airlines
Tue 10/3Tue 17/3
BUF - DEN • Direct
Top airlines
Frontier
Cheapest • from C$ 191 (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 travellers who book at least 3 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 23% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Wed, 22 Apr - Sun, 26 Apr
Frontier Logo
1:08 p.m. - 11:03 p.m.
BUF
-
DEN
11h 55m
1 stop
Frontier Logo
11:59 p.m. - 12:13 p.m.
DEN
-
BUF
10h 14m
1 stop
C$ 191Frontier
Wed, 22 Apr - Sun, 26 Apr
Frontier Logo
1:08 p.m. - 9:58 p.m.
BUF
-
DEN
10h 50m
2 stops
Frontier Logo
11:59 p.m. - 12:13 p.m.
DEN
-
BUF
10h 14m
1 stop
C$ 229Frontier
Thu, 28 May - Tue, 2 Jun
JetBlue Logo
4:00 p.m. - 11:01 p.m.
BUF
-
DEN
9h 01m
1 stop
JetBlue Logo
11:59 p.m. - 9:00 a.m.
DEN
-
BUF
7h 01m
1 stop
C$ 312JetBlue
Thu, 9 Apr - Mon, 13 Apr
Frontier Logo
11:54 a.m. - 11:09 p.m.
BUF
-
DEN
13h 15m
1 stop
Frontier Logo
11:59 p.m. - 12:13 p.m.
DEN
-
BUF
10h 14m
1 stop
C$ 316Frontier
Thu, 9 Apr - Mon, 13 Apr
Frontier Logo
11:54 a.m. - 11:09 p.m.
BUF
-
DEN
13h 15m
1 stop
Frontier Logo
11:59 p.m. - 12:13 p.m.
DEN
-
BUF
10h 14m
1 stop
C$ 319Frontier
Thu, 9 Apr - Mon, 13 Apr
Frontier Logo
11:54 a.m. - 11:09 p.m.
BUF
-
DEN
13h 15m
1 stop
Frontier Logo
11:59 p.m. - 12:13 p.m.
DEN
-
BUF
10h 14m
1 stop
C$ 320Frontier
Mon, 9 Mar - Thu, 12 Mar
Frontier Logo
11:44 a.m. - 11:09 p.m.
BUF
-
DEN
13h 25m
1 stop
Frontier Logo
11:59 p.m. - 12:05 p.m.
DEN
-
BUF
10h 06m
1 stop
C$ 334Frontier
Thu, 28 May - Tue, 2 Jun
JetBlue Logo
4:00 p.m. - 11:01 p.m.
BUF
-
DEN
9h 01m
1 stop
JetBlue Logo
11:59 p.m. - 9:00 a.m.
DEN
-
BUF
7h 01m
1 stop
C$ 338JetBlue
Wed, 27 May - Tue, 2 Jun
Delta Logo
6:25 a.m. - 9:43 a.m.
BUF
-
DEN
5h 18m
1 stop
Delta Logo
11:50 p.m. - 9:45 a.m.
DEN
-
BUF
7h 55m
1 stop
C$ 350Delta
Thu, 11 Jun - Sun, 14 Jun
Delta Logo
4:30 p.m. - 11:45 p.m.
BUF
-
DEN
9h 15m
1 stop
Delta Logo
12:55 a.m. - 8:23 a.m.
DEN
-
BUF
5h 28m
1 stop
C$ 379Delta
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$ 365 (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$ 605 and C$ 573 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$ 614 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 16 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flightC$ 157
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly and prices are also 12% 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$ 157 for a one-way ticket and C$ 191 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$ 574 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$ 377 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$ 402 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

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines,Southwest

United Airlines,Southwest

Sunday

United Airlines

United Airlines

See more nonstop flights

Direct returns

Denver Intl to Buffalo

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines,Southwest

United Airlines,Southwest

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 4284 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

8.0 ExcellentChad, Feb 2026
BNA - PHX
Read more Southwest reviews

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

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.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

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.

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.

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

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

Information on your arrival and departure airports