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$65+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BUF
Apr 7 — Apr 141
Tue 4/7
Tue 4/14
1 adult, Economy
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Find cheap flights from Denver to Buffalo with Cheapflights

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”

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Cheapflights Tip: The best prices from Denver Intl to Buffalo are usually found in October or September, booked 80 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 March 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/7. 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 4/2111:59 pm
DEN
-
BUF
1 stop10h 43m
Frontier
Tue 4/281:56 pm
BUF
-
DEN
1 stop10h 33m
Frontier
Deal found 3/7$131
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Wed 4/221:09 pm
DEN
-
BUF
1 stop20h 31m
Frontier
Tue 5/121:08 pm
BUF
-
DEN
1 stop11h 55m
Frontier
Deal found 3/7$180
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/2011:59 pm
DEN
-
BUF
1 stop10h 43m
Frontier
Wed 4/221:56 pm
BUF
-
DEN
1 stop10h 33m
Frontier
Deal found 3/6$188
This Frontier deal was found by Cheapflights users on 3/3. 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 4/111:59 pm
DEN
-
BUF
1 stop10h 18m
Frontier
Wed 4/812:18 pm
BUF
-
DEN
1 stop12h 46m
Frontier
Deal found 3/3$190
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/201:07 pm
DEN
-
BUF
1 stop21h 35m
Frontier
Mon 4/2712:32 pm
BUF
-
DEN
1 stop25h 42m
Frontier
Deal found 3/6$192
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 4/1811:59 pm
DEN
-
BUF
2 stops13h 14m
Frontier
Tue 5/121:08 pm
BUF
-
DEN
1 stop11h 55m
Frontier
Deal found 3/7$197
This CheapOair deal was found by Cheapflights users on 3/3. 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 4/183:45 pm
DEN
-
BUF
1 stop21h 28m
Frontier
Wed 4/221:56 pm
BUF
-
DEN
1 stop10h 33m
Frontier
Deal found 3/3$201
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Fri 4/1711:59 pm
DEN
-
BUF
1 stop10h 14m
Frontier
Sun 4/1912:07 pm
BUF
-
DEN
2 stops35h 40m
Frontier
Deal found 3/3$202

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 March 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Kiwi.com)

One-way from

$65
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$365

Good round-trip deal

$352 or less

Good one-way deal

$208 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. 11% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 8, 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

Tue 6/9

11:59 pm-9:53 am

1 stop7h 54m

Buffalo

Tue 6/16

7:52 pm-12:30 am

1 stop6h 38m

$269
Quickest round-trip

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Mon 4/20

5:53 pm-11:10 pm

Nonstop3h 17m

Buffalo

Tue 5/5

8:37 am-10:20 am

Nonstop3h 43m

$269

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Tue 4/21

5:53 pm-11:10 pm

Nonstop3h 17m

Buffalo

Tue 4/28

8:30 am-10:13 am

Nonstop3h 43m

$269

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sun 5/31

12:55 am-8:20 am

1 stop5h 25m

Buffalo

Mon 6/8

7:35 pm-10:29 pm

1 stop4h 54m

$275

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Fri 5/8

9:49 am-6:45 pm

1 stop6h 56m

Buffalo

Mon 5/11

7:40 pm-12:33 am

1 stop6h 53m

$287

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 6/6

11:59 pm-9:51 am

1 stop7h 52m

Buffalo

Sat 6/13

7:52 pm-12:30 am

1 stop6h 38m

$289

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Sat 4/18

1:25 pm-8:49 pm

1 stop5h 24m

Buffalo

Wed 4/22

2:54 pm-7:29 pm

1 stop6h 35m

$289

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Tue 4/21

5:55 am-3:20 pm

2 stops7h 25m

Buffalo

Tue 4/28

1:10 pm-7:10 pm

2 stops8h 00m

$299

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Thu 6/11

5:40 pm-10:58 pm

Nonstop3h 18m

Buffalo

Sun 6/14

5:58 pm-12:53 am

1 stop8h 55m

$301

DenverBuffalo

DEN - BUF

DENBUF

Denver Intl

Fri 6/12

5:45 am-3:25 pm

1 stop7h 40m

Buffalo

Tue 6/16

7:10 pm-10:50 pm

1 stop5h 40m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 22 resultsSorted by cheapest first
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2
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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Buffalo. Price data was last updated on March 6, 2026.

The best time to book flights from Denver to Buffalo is 80 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 $225). 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 March 8, 2026.

It’s optimal to fly from Denver to Buffalo in the morning. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight at noon.

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 March 8, 2026.
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
4,315 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Southwest
8.0
Very good
4,315 reviews
Southwest
8.0
Very good
4,315 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Delta
7.9
Good
8,269 reviews
Southwest
8.0
Very good
4,315 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
United Airlines
7.4
Good
9,405 reviews
Southwest
8.0
Very good
4,315 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
American Airlines
7.1
Good
11,397 reviews
Southwest
8.0
Very good
4,315 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Frontier
5.7
Fair
3,035 reviews
Southwest
8.0
Very good
4,315 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

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 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?

    United Airlines and Delta can get you from Denver to Buffalo in just under 5h 25m. Your travel time can differ by up to 2h 29m. 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 ($99), JetBlue ($129), and United Airlines ($157) offers the cheapest pricing from Denver to Buffalo. Frontier is currently priced 68% 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 $79. Users have also found prices from $105 and $115 on United Airlines and JetBlue, respectively.

  • What are the cheapest flights from Denver to Buffalo?

    While on average a flight from Denver to Buffalo is generally $335, our data shows the cheapest flight currently is $182. When looking at the most popular route, (Denver Intl - Buffalo), you can expect to pay $200 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 $225). 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 March 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$234FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$129Average$336FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$157Average$327FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$182Average$257FlexibilityNo cancel feeOn-time71%
DeltaCheapest$198Average$247FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$257Average$443FlexibilityNo cancel feeOn-time63%

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