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$39+ Cheap flights from Denver to Buffalo (DEN - BUF)

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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BUF
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Buffalo are usually found in August or July, booked 72 days in advance, depart on a Monday or Wednesday and return on a Friday

Cheap flight deals from Denver to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Buffalo (BUF). 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 August 14, 2025.

Round-trip from

$157
(Frontier)

One-way from

$39
(Frontier)

Popular in

January

Cheapest in

August

Average price

$271

Good round-trip deal

$211 or less

Good one-way deal

$109 or less
From Denver Intl to Buffalo
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One-way flight from Denver Intl to Buffalo
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Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Denver Intl to Buffalo.
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Price to beat on a one-way flight from Denver Intl to Buffalo.
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Find flight deals from Denver to Buffalo

Cheapest flights from Denver to Buffalo
Explore the most affordable flight options available from Denver to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Booking.com deal was found by Cheapflights users on 8/13. 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 9/1912:04 amDEN - BUF
1 stop16h 10mFrontier
Mon 9/2212:17 pmBUF - DEN
1 stop10h 30mFrontier
Deal found 8/13$160
This Frontier deal was found by Cheapflights users on 8/13. 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.
Sun 9/78:56 pmDEN - BUF
2 stops19h 18mFrontier
Sun 9/214:57 pmBUF - DEN
Nonstop3h 41mFrontier
Deal found 8/13$162
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
Fri 10/2411:13 amDEN - BUF
Nonstop3h 16mFrontier
Mon 10/275:24 pmBUF - DEN
Nonstop3h 40mFrontier
Deal found 8/14$164
This Frontier deal was found by Cheapflights users on 8/13. 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 9/1910:48 amDEN - BUF
Nonstop3h 14mFrontier
Mon 9/224:58 pmBUF - DEN
Nonstop3h 41mFrontier
Deal found 8/13$167
This Frontier deal was found by Cheapflights users on 8/12. 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.
Mon 9/110:46 amDEN - BUF
Nonstop3h 14mFrontier
Fri 9/124:57 pmBUF - DEN
Nonstop3h 41mFrontier
Deal found 8/12$171
This Frontier deal was found by Cheapflights users on 8/12. 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.
Sun 8/318:13 amDEN - BUF
Nonstop3h 09mFrontier
Fri 9/124:57 pmBUF - DEN
Nonstop3h 41mFrontier
Deal found 8/12$176
This Frontier deal was found by Cheapflights users on 8/14. 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.
Sat 9/2712:59 amDEN - BUF
2 stops14h 23mFrontier
Fri 10/34:57 pmBUF - DEN
Nonstop3h 41mFrontier
Deal found 8/14$180
This Frontier deal was found by Cheapflights users on 8/13. 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.
Mon 10/1311:13 amDEN - BUF
Nonstop3h 16mFrontier
Mon 10/2012:15 pmBUF - DEN
2 stops12h 44mFrontier
Deal found 8/13$181
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:29 pmDEN - BUF
1 stop7h 22mAmerican Airlines
Sat 9/1312:10 pmBUF - DEN
2 stops8h 26mAmerican Airlines
Deal found 8/11$182
This Frontier deal was found by Cheapflights users on 8/13. 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 8/226:00 amDEN - BUF
1 stop12h 10mFrontier
Mon 8/254:55 pmBUF - DEN
Nonstop3h 43mFrontier
Deal found 8/13$184

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Buffalo 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 August 14, 2025.
Use the filters below to find and compare flights from Denver to Buffalo that are best for you.

Fly from

Denver

Fly to

Buffalo

Route

Depart

Return

Price

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Fri 9/19

12:04 am-6:14 pm

1 stop16h 10m

Buffalo

Mon 9/22

12:17 pm-8:47 pm

1 stop10h 30m

$160

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sun 9/7

8:56 pm-6:14 pm

2 stops19h 18m

Buffalo

Sun 9/21

4:57 pm-6:38 pm

Nonstop3h 41m

$162

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Thu 10/23

12:59 am-8:18 pm

2 stops17h 19m

Buffalo

Mon 10/27

5:24 pm-7:04 pm

Nonstop3h 40m

$162

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Fri 9/26

7:01 pm-6:14 pm

1 stop21h 13m

Buffalo

Sun 9/28

7:41 pm-8:09 am

1 stop14h 28m

$167

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Mon 9/1

10:46 am-4:00 pm

Nonstop3h 14m

Buffalo

Fri 9/12

4:57 pm-6:38 pm

Nonstop3h 41m

$171

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Fri 10/17

11:13 am-4:29 pm

Nonstop3h 16m

Buffalo

Fri 10/24

5:24 pm-7:04 pm

Nonstop3h 40m

$171

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sun 8/31

8:13 am-1:22 pm

Nonstop3h 09m

Buffalo

Fri 9/12

4:57 pm-6:38 pm

Nonstop3h 41m

$176

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 11/1

12:25 pm-2:47 pm

1 stop24h 22m

Buffalo

Mon 11/3

9:38 pm-11:16 pm

1 stop27h 38m

$176

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 9/27

2:17 pm-9:50 pm

1 stop5h 33m

Buffalo

Sat 10/4

7:00 am-1:57 pm

1 stop8h 57m

$177

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Wed 9/24

12:59 am-5:27 pm

2 stops14h 28m

Buffalo

Sun 9/28

4:57 pm-6:38 pm

Nonstop3h 41m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 21 results
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Best time to book a flight from Denver to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Denver 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 Denver to Buffalo

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Buffalo. Price data was last updated on August 8, 2025.

The best time to book flights from Denver to Buffalo is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Denver to Buffalo (average of $256). Flying from Denver to Buffalo in December is currently the most expensive (average of $337). 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 DEN to BUF?

Find hourly flight availability from Denver to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s optimal to fly from Denver to Buffalo in the morning. By choosing this option you can save up to 42% on the cost of your flight, compared to a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to Buffalo. Price data was last updated on August 10, 2025.

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

Weekly flight availability from Denver to Buffalo

Explore weekly flight availability from Denver to Buffalo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2025.

The most flights from DEN to BUF are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated August 14, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Denver to Buffalo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,219 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Denver to Buffalo. 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 Denver to Buffalo?

    Booking a flight from Denver Intl (DEN) to Buffalo (BUF) is your only option if you wish to fly from Denver to Buffalo. On a typical day, there is 1 flight from Denver Intl to Buffalo, all of which are around 3h 00m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Denver Intl to Buffalo.

  • How popular is this Denver to Buffalo flight route?

    This flight path from Denver Intl to Buffalo was viewed by 5 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    According to our current data, Frontier ($128), American Airlines ($190), and United Airlines ($199) offers the cheapest pricing from Denver to Buffalo. Frontier is currently priced 62% below the average price you’ll pay for this route.

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

    The top 3 most reliable airlines when flying from Denver to Buffalo are Frontier (80%), United Airlines (46%) and Southwest (32%).

  • What are the cheapest flights from Denver to Buffalo?

    While on average a flight from Denver to Buffalo is generally $196, our data shows the cheapest flight currently is $82. When looking at the most popular route, (Denver Intl - Buffalo), you can expect to pay $183 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver to Buffalo 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 Denver to Buffalo?

    Currently, January is the cheapest month in which you can book a flight from Denver to Buffalo (average of $256). Flying from Denver to Buffalo in December is currently the most expensive (average of $337). 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 Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Orchard Park
Batavia
Williamsville
Eden
Amherst
West Seneca

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Alternative routes for Denver to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
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Denver to Watertown flights
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Top 6 airlines flying from Denver to Buffalo

Discover the top 6 airlines that operate flights from Denver to Buffalo. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$250FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$190Average$305FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$199Average$334FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$219Average$384FlexibilityNo cancel feeOn-time62%
DeltaCheapest$220Average$333FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$289Average$431FlexibilityNo cancel feeOn-time63%

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