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$43+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BUF
oct. 17 — oct. 241
ven. 10/17
ven. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Buffalo are usually found in August or September, booked 72 days in advance, depart on a Monday or Friday 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 septembre 17, 2025.

Round-trip from

$135
(Frontier)

One-way from

$43
(Cheapflightsfares)

Popular in

January

Cheapest in

August

Average price

$278

Good round-trip deal

$154 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. 2% potential price decrease ($9 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 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 septembre 17, 2025.

This Frontier deal was found by Cheapflights users on 9/15. 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.
lun. 10/610:49 amDEN - BUF
Nonstop3h 14mFrontier
sam. 10/119:45 pmBUF - DEN
1 stop12h 30mFrontier
Deal found 9/15$135
This Frontier deal was found by Cheapflights users on 9/15. 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.
ven. 10/2411:13 amDEN - BUF
Nonstop3h 16mFrontier
lun. 10/275:24 pmBUF - DEN
Nonstop3h 40mFrontier
Deal found 9/15$138
This Priceline deal was found by Cheapflights users on 9/15. 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.
sam. 10/2512:59 amDEN - BUF
1 stop8h 20mFrontier
ven. 10/312:42 pmBUF - DEN
1 stop8h 48mFrontier
Deal found 9/15$150
This Priceline deal was found by Cheapflights users on 9/16. 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.
sam. 10/1811:38 amDEN - BUF
1 stop7h 11mFrontier
sam. 10/251:02 pmBUF - DEN
1 stop8h 57mFrontier
Deal found 9/16$155
This Frontier deal was found by Cheapflights users on 9/15. 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.
lun. 10/610:49 amDEN - BUF
Nonstop3h 14mFrontier
ven. 10/105:24 pmBUF - DEN
Nonstop3h 40mFrontier
Deal found 9/15$157
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/2912:59 amDEN - BUF
1 stop10h 38mFrontier
dim. 11/29:04 pmBUF - DEN
1 stop13h 39mFrontier
Deal found 9/15$159
This Frontier deal was found by Cheapflights users on 9/15. 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.
mer. 11/512:59 amDEN - BUF
1 stop12h 29mFrontier
dim. 11/162:42 pmBUF - DEN
1 stop8h 46mFrontier
Deal found 9/15$160
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/3111:10 amDEN - BUF
1 stop7h 43mFrontier
dim. 11/29:04 pmBUF - DEN
1 stop13h 39mFrontier
Deal found 9/14$165
This Booking.com deal was found by Cheapflights users on 9/15. 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.
ven. 10/37:01 pmDEN - BUF
1 stop21h 13mFrontier
dim. 10/57:41 pmBUF - DEN
1 stop29h 32mFrontier
Deal found 9/15$168
This Frontier deal was found by Cheapflights users on 9/15. 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.
ven. 11/711:59 pmDEN - BUF
1 stop8h 09mFrontier
ven. 11/142:42 pmBUF - DEN
1 stop8h 46mFrontier
Deal found 9/15$169

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 septembre 17, 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

lun. 11/10

11:59 pm-10:37 am

1 stop8h 38m

Buffalo

sam. 11/15

6:12 am-10:22 am

1 stop6h 10m

$237

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

mar. 11/11

11:59 pm-10:37 am

1 stop8h 38m

Buffalo

ven. 11/14

6:25 pm-12:13 am

1 stop7h 48m

$237

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

ven. 11/7

11:59 pm-10:31 am

1 stop8h 32m

Buffalo

mar. 11/18

11:19 am-6:47 pm

1 stop9h 28m

$237

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

ven. 11/14

11:55 pm-7:55 am

1 stop6h 00m

Buffalo

dim. 11/16

10:40 am-12:15 pm

Nonstop3h 35m

$247

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

mar. 11/11

5:38 pm-10:52 pm

Nonstop3h 14m

Buffalo

ven. 11/14

8:10 am-9:56 am

Nonstop3h 46m

$257

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

mar. 10/14

11:59 pm-10:31 am

1 stop8h 32m

Buffalo

mar. 10/21

4:35 pm-9:41 pm

1 stop7h 06m

$257

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

dim. 10/5

12:55 am-8:23 am

1 stop5h 28m

Buffalo

mar. 10/7

4:35 pm-9:41 pm

1 stop7h 06m

$277

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

jeu. 10/30

6:00 am-1:17 pm

1 stop5h 17m

Buffalo

lun. 11/10

8:10 am-9:56 am

Nonstop3h 46m

$284

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

dim. 11/9

5:38 pm-10:52 pm

Nonstop3h 14m

Buffalo

jeu. 11/13

8:10 am-9:56 am

Nonstop3h 46m

$297

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

mer. 10/15

5:30 pm-10:46 pm

Nonstop3h 16m

Buffalo

mer. 10/22

8:25 am-10:01 am

Nonstop3h 36m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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 September 12, 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 septembre 17, 2025.

It’s optimal to fly from Denver to Buffalo in the morning. By choosing this option you can save up to 46% 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 September 14, 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.

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 septembre 17, 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
4,242 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

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
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

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
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

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
4,242 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

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
3,174 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

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 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 4 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 Denver to Buffalo?

    Delta, Southwest, and United Airlines can get you from Denver to Buffalo in just under 3h 14m. Your travel time can differ by up to 6h 25m. The distance between Denver and Buffalo is about 1355 mi. This flight may include one or multiple stops.

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

    According to our current data, Frontier ($125), United Airlines ($186), and American Airlines ($190) 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 cheapest airlines to fly from Denver to Buffalo one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $109. Users have also found prices from $109 and $114 on United Airlines and Frontier, respectively.

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

    The top 3 most reliable airlines when flying from Denver to Buffalo are Frontier (81%), Southwest (58%) and United Airlines (45%).

  • What are the cheapest flights from Denver to Buffalo?

    While on average a flight from Denver to Buffalo is generally $241, our data shows the cheapest flight currently is $71. When looking at the most popular route, (Denver Intl - Buffalo), you can expect to pay $136 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.
Denver to LaGuardia flights
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Colorado Springs to Newark flights
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Denver to Ithaca flights
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Colorado Springs to White Plains flights
Denver to Saranac Lake flights
Denver to Rutland flights
Durango to Buffalo flights
Montrose to John F Kennedy Intl flights
Grand Junction to Rochester flights
Montrose to Albany flights
Durango to Albany flights
Grand Junction to Albany flights
Montrose to Rochester flights
Grand Junction to Syracuse flights

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 septembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$125Average$250FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$186Average$337FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$190Average$299FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$229Average$461FlexibilityNo cancel feeOn-time62%
DeltaCheapest$230Average$326FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$287Average$444FlexibilityNo cancel feeOn-time63%

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