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$33+ Cheap flights from Buffalo to Denver (BUF - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Denver Intl are usually found in August or September, booked 65 days in advance, depart on a Friday or Wednesday and return on a Monday

Cheap flight deals from Buffalo to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$138
(Cheapflightsfares)

One-way from

$33
(Frontier)

Popular in

December

Cheapest in

August

Average price

$275

Good round-trip deal

$214 or less

Good one-way deal

$123 or less
From Buffalo to Denver Intl
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One-way flight from Buffalo to Denver Intl
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Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Buffalo to Denver Intl.
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Price to beat on a one-way flight from Buffalo to Denver Intl.
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Find flight deals from Buffalo to Denver

Cheapest flights from Buffalo to Denver
Explore the most affordable flight options available from Buffalo to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/21:23 pmBUF - DEN
1 stop8h 35mFrontier
Mon 10/610:49 amDEN - BUF
Nonstop3h 14mFrontier
Deal found 9/11$138
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:13 pmBUF - DEN
1 stop28h 03mFrontier
Fri 10/2411:13 amDEN - BUF
Nonstop3h 16mFrontier
Deal found 9/10$148
This Priceline deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:42 pmBUF - DEN
1 stop8h 46mFrontier
Sat 11/1512:59 amDEN - BUF
1 stop10h 48mFrontier
Deal found 9/11$150
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/34:57 pmBUF - DEN
Nonstop3h 41mFrontier
Sun 10/512:04 amDEN - BUF
1 stop16h 10mFrontier
Deal found 9/10$156
This Priceline deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:42 pmBUF - DEN
1 stop8h 48mFrontier
Sun 11/212:16 amDEN - BUF
1 stop9h 28mFrontier
Deal found 9/9$159
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:22 pmBUF - DEN
2 stops29h 09mFrontier
Sun 10/510:48 amDEN - BUF
Nonstop3h 14mFrontier
Deal found 9/9$161
This Priceline deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/119:45 pmBUF - DEN
1 stop12h 30mFrontier
Sat 10/1811:38 amDEN - BUF
1 stop7h 11mFrontier
Deal found 9/10$163
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:24 pmBUF - DEN
Nonstop3h 40mFrontier
Mon 10/2011:13 amDEN - BUF
Nonstop3h 16mFrontier
Deal found 9/10$165
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:00 pmBUF - DEN
1 stop7h 55mAmerican Airlines
Tue 10/282:04 pmDEN - BUF
1 stop7h 31mAmerican Airlines
Deal found 9/10$167
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:59 pmBUF - DEN
1 stop15h 55mFrontier
Sat 10/412:04 amDEN - BUF
1 stop15h 23mFrontier
Deal found 9/10$168

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Buffalo to Denver that are best for you.

Fly from

Buffalo

Fly to

Denver

Route

Depart

Return

Price

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 10/24

5:24 pm-7:04 pm

Nonstop3h 40m

Denver Intl

Mon 10/27

11:13 am-4:29 pm

Nonstop3h 16m

$195

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 11/7

5:38 pm-10:19 pm

1 stop6h 41m

Denver Intl

Mon 11/10

7:22 am-3:56 pm

1 stop6h 34m

$199

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 10/18

8:25 am-10:01 am

Nonstop3h 36m

Denver Intl

Mon 10/20

5:30 pm-10:46 pm

Nonstop3h 16m

$201

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 10/1

10:12 am-4:47 pm

2 stops8h 35m

Denver Intl

Wed 10/8

7:21 am-4:52 pm

1 stop7h 31m

$210

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 11/7

10:40 am-12:15 pm

Nonstop3h 35m

Denver Intl

Mon 11/10

11:55 pm-8:15 am

1 stop6h 20m

$236

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 10/21

2:35 pm-8:58 pm

1 stop8h 23m

Denver Intl

Sat 10/25

3:45 pm-10:52 pm

1 stop5h 07m

$237

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 10/21

4:35 pm-9:41 pm

1 stop7h 06m

Denver Intl

Fri 10/24

5:45 am-3:16 pm

1 stop7h 31m

$237

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 10/24

7:30 pm-11:59 pm

1 stop6h 29m

Denver Intl

Mon 10/27

11:59 pm-10:31 am

1 stop8h 32m

$237

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 11/7

3:57 pm-9:41 pm

1 stop7h 44m

Denver Intl

Mon 11/10

11:59 pm-10:37 am

1 stop8h 38m

$237

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 11/7

3:57 pm-9:41 pm

1 stop7h 44m

Denver Intl

Sun 11/9

1:10 pm-11:50 pm

1 stop8h 40m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
2

Best time to book a flight from Buffalo to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Buffalo to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Denver. Price data was last updated on August 29, 2025.

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Buffalo to Denver?

Currently, October is the cheapest month in which you can book a flight from Buffalo to Denver (average of $197). Flying from Buffalo to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BUF to DEN?

Find hourly flight availability from Buffalo to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from Buffalo to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 44% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Denver. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Buffalo to Denver flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated September 11, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Buffalo to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Buffalo to Denver?

    Booking a flight from Buffalo (BUF) to Denver Intl (DEN) is your only option if you wish to fly from Buffalo to Denver. On a typical day, there is 1 flight from Buffalo to Denver Intl, all of which are around 3h 35m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Buffalo to Denver.

  • How popular is this Buffalo to Denver flight route?

    This flight path from Buffalo to Denver Intl was viewed by 48 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Buffalo to Denver?

    Departing from Buffalo to Denver will take you 3h 36m. There are 1355 mi between Buffalo and Denver. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Buffalo to Denver round-trip?

    According to our current data, Frontier ($102), JetBlue ($188), and United Airlines ($211) offers the cheapest pricing from Buffalo to Denver. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Buffalo to Denver one-way?

    One-way options have recently been found by users for as low as $74 on United Airlines. Other airlines that offer cheap prices include Southwest from $90 and Frontier from $95 one-way.

  • What are the most reliable airlines from Buffalo to Denver?

    No one likes to see their flight delayed. When booking a flight from Buffalo to Denver consider choosing United Airlines (89%), Southwest (80%) or Frontier (64%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Buffalo to Denver?

    The cheapest flight price from Buffalo to Denver is $48. On average you can expect to pay $580. The most popular route, (Buffalo - Denver Intl), can usually be booked for $147.

  • Can I find deals for flights from Buffalo to Denver that include hotel bookings?

    Yes. In addition to deals on Buffalo to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to Denver.

  • Can I find deals for business class flights from Buffalo to Denver?

    Yes. Cheapflights offers flight deals from Buffalo to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buffalo to Denver?

    Currently, October is the cheapest month in which you can book a flight from Buffalo to Denver (average of $197). Flying from Buffalo to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Buffalo to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Binghamton to Denver flights
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White Plains to Colorado Springs flights
White Plains to Aspen flights
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Stewart to Denver flights
Albany to Montrose flights
Buffalo to Hayden flights
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Rochester to Grand Junction flights
Rutland to Denver flights
Buffalo to Aspen flights
Syracuse to Durango flights

Top 6 airlines flying from Buffalo to Denver

Discover the top 6 airlines that operate flights from Buffalo to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$222FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$188Average$305FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$211Average$326FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$216Average$304FlexibilityNo cancel feeOn-time71%
DeltaCheapest$220Average$281FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$274Average$427FlexibilityNo cancel feeOn-time63%

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