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$79+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BUF
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Denver Intl to Buffalo are usually found in October or September, booked 49 days in advance, depart on a Friday or Monday and return on a Friday

Cheap 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 April 29, 2026.

This Frontier deal was found by Cheapflights users on 4/28. 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.
Tue 5/1211:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Sat 5/2312:41 pm
BUF
-
DEN
1 stop11h 43m
Frontier
Deal found 4/28$180
This Frontier deal was found by Cheapflights users on 4/28. 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.
Thu 5/147:00 am
DEN
-
BUF
1 stop11h 04m
Frontier
Sat 5/2312:41 pm
BUF
-
DEN
1 stop11h 43m
Frontier
Deal found 4/28$185
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Tue 5/2611:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Tue 6/211:36 am
BUF
-
DEN
1 stop23h 29m
Frontier
Deal found 4/25$186
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Tue 5/1911:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Tue 6/912:05 pm
BUF
-
DEN
1 stop12h 11m
Frontier
Deal found 4/24$188
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 5/286:03 am
DEN
-
BUF
1 stop12h 01m
Frontier
Fri 6/52:49 pm
BUF
-
DEN
1 stop20h 16m
Frontier
Deal found 4/24$192
This Frontier deal was found by Cheapflights users on 4/26. 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.
Tue 5/1211:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Fri 5/152:49 pm
BUF
-
DEN
1 stop9h 35m
Frontier
Deal found 4/26$200
This Frontier deal was found by Cheapflights users on 4/25. 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 5/811:56 pm
DEN
-
BUF
1 stop11h 56m
Frontier
Sat 5/1612:41 pm
BUF
-
DEN
1 stop11h 43m
Frontier
Deal found 4/25$205
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/286:03 am
DEN
-
BUF
1 stop12h 01m
Frontier
Mon 6/17:52 pm
BUF
-
DEN
2 stops39h 13m
Frontier
Deal found 4/27$208
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Sat 5/21:09 pm
DEN
-
BUF
1 stop20h 28m
Frontier
Fri 5/82:49 pm
BUF
-
DEN
1 stop25h 15m
Frontier
Deal found 4/24$217

Find 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 April 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$180
(Frontier)

One-way from

$79
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$394

Good round-trip deal

$441 or less

Good one-way deal

$218 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
Search Deals
One-way flight from Denver Intl to Buffalo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($29 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 April 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Buffalo.
Search Deals
Price to beat on a one-way flight from Denver Intl to Buffalo.
Search Deals

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 April 29, 2026.
Use the filters below to find and compare flights from Denver to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 5/23

11:15 am-9:03 pm

1 stop7h 48m

Buffalo

Mon 5/25

9:00 am-10:35 am

Nonstop3h 35m

$428
Quickest round-trip

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 7/18

5:40 pm-10:58 pm

Nonstop3h 18m

Buffalo

Wed 7/22

9:00 am-10:35 am

Nonstop3h 35m

$450

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Wed 6/3

5:40 pm-10:58 pm

Nonstop3h 18m

Buffalo

Tue 6/9

5:52 pm-11:37 pm

1 stop7h 45m

$455

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Wed 7/8

11:50 pm-8:10 am

1 stop6h 20m

Buffalo

Sun 7/12

5:15 am-6:50 am

Nonstop3h 35m

$460

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 5/30

11:59 pm-9:53 am

1 stop7h 54m

Buffalo

Wed 6/10

9:00 am-10:35 am

Nonstop3h 35m

$464

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 7/4

10:00 am-8:25 pm

2 stops8h 25m

Buffalo

Wed 7/8

2:55 pm-8:50 pm

2 stops7h 55m

$480

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Mon 6/1

5:40 pm-10:58 pm

Nonstop3h 18m

Buffalo

Mon 6/8

9:00 am-10:35 am

Nonstop3h 35m

$508

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 5/16

5:48 pm-11:05 pm

Nonstop3h 17m

Buffalo

Mon 5/18

8:37 am-10:20 am

Nonstop3h 43m

$508

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Tue 6/2

6:13 am-2:25 pm

1 stop6h 12m

Buffalo

Mon 6/8

9:00 am-10:35 am

Nonstop3h 35m

$509

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Wed 5/13

5:48 pm-11:05 pm

Nonstop3h 17m

Buffalo

Mon 5/18

8:37 am-10:20 am

Nonstop3h 43m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 23 resultsSorted by cheapest first
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3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Buffalo flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

The best time to book flights from Denver to Buffalo is 48 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 $228). Flying from Denver to Buffalo in December is currently the most expensive (average of $427). 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 April 29, 2026.

It’s optimal to fly from Denver to Buffalo in the morning. By choosing this option you can save up to 55% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from Denver to Buffalo?

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 April 29, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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
4,314 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,314 reviews
Southwest
8.0
Very good
4,314 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,465 reviews
Southwest
8.0
Very good
4,314 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,680 reviews
Southwest
8.0
Very good
4,314 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,678 reviews
Southwest
8.0
Very good
4,314 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,970 reviews
Southwest
8.0
Very good
4,314 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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.

  • How popular is this Denver to Buffalo flight route?

    This flight path from Denver Intl to Buffalo was viewed by 2 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?

    United Airlines and Southwest can get you from Denver to Buffalo in just under 6h 20m. Your travel time can differ by up to 1h 28m. 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 ($97), JetBlue ($129), and American Airlines ($182) offers the cheapest pricing from Denver to Buffalo. Frontier is currently priced 70% 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 Frontier. According to our data, you can fly for as low as $72. Users have also found prices from $108 and $117 on United Airlines and Delta, respectively.

  • What are the cheapest flights from Denver to Buffalo?

    While on average a flight from Denver to Buffalo is generally $369, our data shows the cheapest flight currently is $177. When looking at the most popular route, (Denver Intl - Buffalo), you can expect to pay $281 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 $228). Flying from Denver to Buffalo in December is currently the most expensive (average of $427). 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
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca

Browse thousands of different options on Cheapflights for your next trip

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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 April 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$232FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$129Average$336FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$182Average$296FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$182Average$372FlexibilityNo cancel feeOn-time69%
DeltaCheapest$187Average$298FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$270Average$458FlexibilityNo cancel feeOn-time63%

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