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$81+ Cheap flights from Buffalo to Denver (BUF - DEN)

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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — DEN
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
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Find cheap flights from Buffalo to Denver 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”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Buffalo to Denver Intl are usually found in August or October, booked 90 days in advance, depart on a Friday or Monday and return on a Friday

Cheap flight deals from Buffalo to Denver

Cheapest flights from Buffalo to Denver
Explore the most affordable flight options available from Buffalo to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

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.
Fri 6/52:49 pm
BUF
-
DEN
1 stop20h 16m
Frontier
Fri 6/1210:11 am
DEN
-
BUF
2 stops23h 23m
Frontier
Deal found 4/25$242
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.
Sun 6/711:36 am
BUF
-
DEN
1 stop23h 29m
Frontier
Fri 6/1210:11 am
DEN
-
BUF
2 stops23h 23m
Frontier
Deal found 4/25$243
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:35 am
BUF
-
DEN
1 stop12h 41m
Frontier
Sat 6/1311:46 pm
DEN
-
BUF
1 stop8h 54m
Frontier
Deal found 4/26$244
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.
Thu 5/2811:36 am
BUF
-
DEN
1 stop12h 48m
Frontier
Mon 6/16:03 am
DEN
-
BUF
2 stops26h 38m
Frontier
Deal found 4/25$245
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:50 am
BUF
-
DEN
2 stops14h 40m
Frontier
Tue 8/1811:42 pm
DEN
-
BUF
1 stop12h 13m
Frontier
Deal found 4/28$247
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/211:36 am
BUF
-
DEN
1 stop23h 29m
Frontier
Thu 6/46:00 am
DEN
-
BUF
2 stops12h 04m
Frontier
Deal found 4/28$249
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 6/1111:35 am
BUF
-
DEN
1 stop12h 41m
Frontier
Sun 6/146:03 am
DEN
-
BUF
1 stop12h 14m
Frontier
Deal found 4/28$250
This Frontier deal was found by Cheapflights users on 4/29. 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 5/112:49 pm
BUF
-
DEN
1 stop9h 35m
Frontier
Thu 5/2811:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Deal found 4/29$251
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:49 pm
BUF
-
DEN
1 stop9h 35m
Frontier
Sun 5/177:00 am
DEN
-
BUF
1 stop11h 04m
Frontier
Deal found 4/27$252
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.
Wed 5/132:49 pm
BUF
-
DEN
1 stop9h 35m
Frontier
Sun 5/177:00 am
DEN
-
BUF
1 stop11h 04m
Frontier
Deal found 4/28$255
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/1211:36 am
BUF
-
DEN
2 stops14h 08m
Frontier
Tue 6/211:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Deal found 4/29$256
This Booking.com deal was found by Cheapflights users on 4/29. 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.
Wed 5/62:49 pm
BUF
-
DEN
1 stop9h 35m
Frontier
Thu 5/711:54 pm
DEN
-
BUF
1 stop12h 00m
Frontier
Deal found 4/29$259

Find flight deals from Buffalo to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Denver (DEN). 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 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$242
(Kiwi.com)

One-way from

$81
(Kiwi.com)

Popular in

January

Cheapest in

August

Average price

$392

Good round-trip deal

$448 or less

Good one-way deal

$218 or less
Provider with most accurate pricing for Buffalo-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Denver Intl flights.
Search Deals
From Buffalo to Denver Intl
Search Deals
One-way flight from Buffalo to Denver Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 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 Buffalo to Denver Intl.
Search Deals
Price to beat on a one-way flight from Buffalo to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Denver 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 30, 2026.
Use the filters below to find and compare flights from Buffalo to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Mon 6/1

9:00 am-10:35 am

Nonstop3h 35m

Denver Intl

Sun 6/7

5:40 pm-10:58 pm

Nonstop3h 18m

$418

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 5/22

9:00 am-10:35 am

Nonstop3h 35m

Denver Intl

Wed 5/27

5:40 pm-10:58 pm

Nonstop3h 18m

$422

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 6/17

9:00 am-10:35 am

Nonstop3h 35m

Denver Intl

Wed 6/24

5:40 pm-10:58 pm

Nonstop3h 18m

$445

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 6/10

5:52 pm-11:37 pm

1 stop7h 45m

Denver Intl

Wed 6/17

5:40 pm-10:58 pm

Nonstop3h 18m

$455

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 6/27

5:12 pm-11:06 pm

1 stop7h 54m

Denver Intl

Mon 7/6

11:59 pm-3:07 pm

1 stop13h 08m

$483

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 6/9

9:00 am-2:55 pm

2 stops7h 55m

Denver Intl

Thu 6/25

11:25 am-9:35 pm

2 stops8h 10m

$487

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 6/4

2:50 pm-8:10 pm

2 stops7h 20m

Denver Intl

Sun 6/7

11:50 pm-10:25 am

2 stops8h 35m

$493

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 5/21

6:05 am-12:18 pm

1 stop8h 13m

Denver Intl

Tue 5/26

5:40 pm-10:58 pm

Nonstop3h 18m

$496

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 6/30

5:52 pm-9:59 pm

1 stop6h 07m

Denver Intl

Wed 7/8

5:40 pm-10:58 pm

Nonstop3h 18m

$496

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 6/20

9:00 am-10:35 am

Nonstop3h 35m

Denver Intl

Tue 6/23

5:40 pm-10:58 pm

Nonstop3h 18m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Buffalo to Denver

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 Buffalo to Denver in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 Buffalo-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Denver 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 Buffalo-Denver 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 Buffalo to Denver

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

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

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Buffalo to Denver (average of $267). Flying from Buffalo to Denver in January is currently the most expensive (average of $451). 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 BUF to DEN?

Find hourly flight availability from Buffalo to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2026.

One of the essential ways to save on airfare from Buffalo to Denver is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 52% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Denver. Price data was last updated on April 25, 2026.

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

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

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated April 30, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Buffalo to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

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
8,463 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

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
9,677 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

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
11,681 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

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
2,969 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

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 Buffalo to Denver. 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 Buffalo to Denver flight route?

    This flight path from Buffalo to Denver Intl was viewed by 43 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 Buffalo to Denver?

    Departing from Buffalo to Denver will take you 3h 35m. There are 1355 mi between Buffalo and Denver. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Frontier ($88), American Airlines ($190), and United Airlines ($202) offers the cheapest pricing from Buffalo to Denver. Frontier is 75% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Buffalo to Denver one-way?

    One-way options have recently been found by users for as low as $48 on Frontier. Other airlines that offer cheap prices include United Airlines from $107 and American Airlines from $109 one-way.

  • What are the cheapest flights from Buffalo to Denver?

    The cheapest flight price from Buffalo to Denver is $170. On average you can expect to pay $690. The most popular route, (Buffalo - Denver Intl), can usually be booked for $230.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Buffalo to Denver (average of $267). Flying from Buffalo to Denver in January is currently the most expensive (average of $451). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Buffalo to Denver

Discover the top 5 airlines that operate flights from Buffalo to Denver. 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 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$88Average$215FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$190Average$294FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$202Average$393FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$298FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$252Average$429FlexibilityNo cancel feeOn-time63%

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