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$63+ 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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BUF
Dec 11 — Dec 181
Thu 12/11
Thu 12/18
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Denver Intl to Buffalo are usually found in October or September, booked 72 days in advance, depart on a Friday or Monday 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 November 11, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$165
(Kiwi.com)

One-way from

$63
(Trip.com)

Popular in

January

Cheapest in

October

Average price

$365

Good round-trip deal

$188 or less

Good one-way deal

$188 or less
Provider with most accurate pricing for Denver Intl-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Buffalo flights.
Search Deals
From Denver Intl to Buffalo
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One-way flight from Denver Intl to Buffalo
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
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 November 11, 2025.

This CheapOair deal was found by Cheapflights users on 11/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:00 pmDEN - BUF
1 stop15h 00mFrontier
Mon 12/83:18 pmBUF - DEN
1 stop9h 46mFrontier
Deal found 11/10$176
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Sun 12/712:59 amDEN - BUF
1 stop7h 46mMultiple Airlines
Sat 12/133:18 pmBUF - DEN
2 stops19h 44mMultiple Airlines
Deal found 11/10$180
This Frontier deal was found by Cheapflights users on 11/10. 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.
Sun 11/1612:59 amDEN - BUF
1 stop10h 38mFrontier
Tue 11/2510:16 amBUF - DEN
1 stop13h 13mFrontier
Deal found 11/10$183
This Priceline deal was found by Cheapflights users on 11/9. 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.
Thu 12/412:59 amDEN - BUF
1 stop7h 46mFrontier
Mon 12/83:18 pmBUF - DEN
1 stop9h 46mFrontier
Deal found 11/9$184
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Sun 12/712:59 amDEN - BUF
1 stop7h 46mFrontier
Fri 12/1211:30 amBUF - DEN
1 stop23h 32mFrontier
Deal found 11/10$189
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Sun 12/712:59 amDEN - BUF
1 stop7h 46mFrontier
Thu 12/114:55 pmBUF - DEN
2 stops40h 20mFrontier
Deal found 11/10$193
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Sun 11/1612:16 amDEN - BUF
1 stop9h 28mFrontier
Mon 11/179:53 pmBUF - DEN
2 stops20h 00mFrontier
Deal found 11/10$205
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 11/2411:59 pmDEN - BUF
1 stop15h 53mFrontier
Mon 12/15:05 pmBUF - DEN
2 stops43h 13mFrontier
Deal found 11/10$206
This CheapOair deal was found by Cheapflights users on 11/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1012:59 amDEN - BUF
1 stop8h 11mFrontier
Sun 12/143:18 pmBUF - DEN
1 stop19h 06mFrontier
Deal found 11/9$209
This Frontier deal was found by Cheapflights users on 11/10. 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.
Wed 11/1212:59 amDEN - BUF
1 stop10h 38mFrontier
Mon 11/2411:57 amBUF - DEN
1 stop13h 02mFrontier
Deal found 11/10$213
This CheapOair deal was found by Cheapflights users on 11/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1012:59 amDEN - BUF
1 stop8h 11mFrontier
Sat 12/133:18 pmBUF - DEN
1 stop19h 06mFrontier
Deal found 11/9$214

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 November 11, 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

Thu 12/4

12:59 am-10:45 am

1 stop7h 46m

Buffalo

Mon 12/8

3:18 pm-11:04 pm

1 stop9h 46m

$184

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Wed 12/10

11:00 pm-4:00 pm

1 stop15h 00m

Buffalo

Sat 1/3

7:05 pm-9:04 am

2 stops39h 59m

$249

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Thu 12/11

6:31 pm-11:51 am

1 stop15h 20m

Buffalo

Sat 12/13

3:18 pm-8:24 am

1 stop19h 06m

$252

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 12/13

11:28 pm-9:20 am

1 stop7h 52m

Buffalo

Sun 12/14

12:19 pm-11:05 am

1 stop24h 46m

$313

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Tue 12/9

12:05 pm-10:00 pm

2 stops7h 55m

Buffalo

Tue 12/16

9:30 am-4:40 pm

2 stops9h 10m

$369

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Tue 2/24

12:59 am-11:19 am

1 stop8h 20m

Buffalo

Sat 2/28

3:38 pm-10:48 pm

1 stop9h 10m

$372

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sun 12/7

12:50 am-11:04 am

1 stop8h 14m

Buffalo

Wed 12/10

6:00 am-12:11 pm

1 stop8h 11m

$372

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Fri 12/19

11:59 pm-5:04 pm

1 stop15h 05m

Buffalo

Tue 12/23

6:32 pm-9:49 pm

1 stop29h 17m

$372

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Thu 1/29

10:45 am-9:55 pm

2 stops9h 10m

Buffalo

Tue 2/3

5:50 am-12:35 pm

1 stop8h 45m

$377

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Wed 1/7

8:20 pm-8:05 am

2 stops9h 45m

Buffalo

Mon 1/12

12:20 pm-7:35 pm

2 stops9h 15m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 18 results
1
2

Compare providers for flights from Denver to Buffalo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Buffalo in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Buffalo flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Buffalo flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Denver-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Buffalo flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Buffalo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 November 7, 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, October is the cheapest month in which you can book a flight from Denver to Buffalo (average of $92). Flying from Denver to Buffalo in April is currently the most expensive (average of $226). 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 November 11, 2025.

It’s optimal to fly from Denver to Buffalo in the morning. By choosing this option you can save up to 57% on the cost of your flight, compared to a flight at noon.

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 November 2, 2025.

Travelers seeking maximum savings on their Denver to Buffalo flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday 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 November 11, 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
4,235 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

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
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

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
7.9
Good
8,007 reviews
Southwest
8.0
Very good
4,235 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

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
9,012 reviews
Southwest
8.0
Very good
4,235 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

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
11,045 reviews
Southwest
8.0
Very good
4,235 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

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
3,113 reviews
Southwest
8.0
Very good
4,235 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

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 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 are 2 flights 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?

    Frontier and JetBlue can get you from Denver to Buffalo in just under 7h 46m. Your travel time can differ by up to 06m. 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 ($120), American Airlines ($182), and United Airlines ($186) offers the cheapest pricing from Denver to Buffalo. Frontier is currently priced 63% 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 (86%), United Airlines (77%) and Southwest (71%).

  • What are the cheapest flights from Denver to Buffalo?

    While on average a flight from Denver to Buffalo is generally $236, our data shows the cheapest flight currently is $112. When looking at the most popular route, (Denver Intl - Buffalo), you can expect to pay $176 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, October is the cheapest month in which you can book a flight from Denver to Buffalo (average of $92). Flying from Denver to Buffalo in April is currently the most expensive (average of $226). 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
Cheektowaga
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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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 November 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$120Average$240FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$182Average$282FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$186Average$335FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$230Average$326FlexibilityNo cancel feeOn-time62%
DeltaCheapest$236Average$330FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$278Average$446FlexibilityNo cancel feeOn-time63%

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