$77 Cheap Flights from Denver (DEN) to Buffalo (BUF)

View $77 flight on Fri, Sep 5, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)

Cheap Flights from Denver to Buffalo (DEN-BUF)

Prices were available within the past 7 days and start at $77 for one-way flights and $149 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Oct 24 - Mon, Oct 27
DEN
Denver
BUF
Buffalo
$149 Roundtrip, found 1 hour ago
$149
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Denver to Buffalo, returning Mon, Oct 27, priced at $149 found 1 hour ago
Frontier Airlines
Mon, Oct 20 - Mon, Oct 27
DEN
Denver
BUF
Buffalo
$151 Roundtrip, just found
$151
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Oct 20 from Denver to Buffalo, returning Mon, Oct 27, priced at $151 just found
Frontier Airlines
Fri, Sep 5 - Sun, Sep 7
DEN
Denver
BUF
Buffalo
$154 Roundtrip, just found
$154
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Sep 5 from Denver to Buffalo, returning Sun, Sep 7, priced at $154 just found
Frontier Airlines
Fri, Oct 24 - Tue, Oct 28
DEN
Denver
BUF
Buffalo
$156 Roundtrip, found 3 hours ago
$156
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Denver to Buffalo, returning Tue, Oct 28, priced at $156 found 3 hours ago
United
Sat, Sep 20 - Tue, Sep 23
DEN
Denver
BUF
Buffalo
$157 Roundtrip, just found
$157
Roundtrip
just found
Select United flight, departing Sat, Sep 20 from Denver to Buffalo, returning Tue, Sep 23, priced at $157 just found
Frontier Airlines
Fri, Oct 17 - Mon, Oct 20
DEN
Denver
BUF
Buffalo
$159 Roundtrip, found 1 hour ago
$159
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Oct 17 from Denver to Buffalo, returning Mon, Oct 20, priced at $159 found 1 hour ago
Frontier Airlines
Fri, Oct 24 - Sat, Nov 1
DEN
Denver
BUF
Buffalo
$164 Roundtrip, found 1 day ago
$164
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Denver to Buffalo, returning Sat, Nov 1, priced at $164 found 1 day ago
American Airlines
Wed, Sep 10 - Sun, Sep 14
DEN
Denver
BUF
Buffalo
$166 Roundtrip, found 2 hours ago
$166
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Sep 10 from Denver to Buffalo, returning Sun, Sep 14, priced at $166 found 2 hours ago
Southwest Airlines
Sat, Nov 8 - Wed, Nov 12
DEN
Denver
BUF
Buffalo
$167 Roundtrip, found 1 day ago
$167
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Sat, Nov 8 from Denver to Buffalo, returning Wed, Nov 12, priced at $167 found 1 day ago
Delta
Thu, Oct 23 - Sun, Oct 26
DEN
Denver
BUF
Buffalo
$191 Roundtrip, found 16 hours ago
$191
Roundtrip
found 16 hours ago
Select Delta flight, departing Thu, Oct 23 from Denver to Buffalo, returning Sun, Oct 26, priced at $191 found 16 hours ago

Find the cheapest month to fly from Denver (DEN) to Buffalo (BUF)

January is typically the cheapest month to fly

From $118 - $367 per traveler.

Graph displaying average flight prices per month

Alternative airports near Buffalo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Buffalo Niagara Intl. BUF. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $257
BUF
Buffalo Niagara Intl.
CheapestClosest
Average driving time to city center16 min
Flights from $257
Flights from Denver (DEN) to Buffalo (BUF)
Origin airport
Denver Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$143
Distance
1355 mi
Average flight time
5 hours 7 mins

Denver to Buffalo Flights

The cheapest times to fly from Denver to Buffalo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Buffalo are during the month of October. You can find some of the cheapest flights from Denver to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Buffalo

Sunday is one of the best days to book for cheap flights from Denver to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Buffalo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Buffalo in 2025. You can also book with separate airlines for your outbound and return journeys, from $77 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF) cost?
Snag a cheap one-way flight from $77 or cheap return flight from $149 from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
The cheapest month to fly from DEN to BUF is October, when demand is low. Off-peak months are generally when better flight deals are available between these airports.
Which airlines fly direct from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
When setting off from Denver Intl. Airport (DEN), you can take a direct flight to Buffalo Niagara Intl. Airport (BUF) with Southwest Airlines.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from DEN to BUF. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
On average, you can pick from 4 direct flights each week from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF). To expand your choices, consider taking a flight with a layover. Just enter your details on Expedia and then set the filter tool to include one or more stops.
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
More travelers fly between DEN and BUF at 6 PM than at any other time. Looking to skip the crowds? Consider flying outside peak hours and you could save on your fare as well.
What day of the week has the most flights from DEN to BUF?
If you jet off on a Sunday, you'll get the largest range of choices for flights from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF).
What is the earliest flight from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
The first flight of the day leaving Denver Intl. Airport (DEN) is at around 10:40AM UTC-7. Board this flight and you'll touch down at Buffalo Niagara Intl. Airport (BUF) at approximately 3:40PM UTC-5. The total flight duration is 3h.
How long does it take to fly from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
It takes approximately 3 hours to fly the 1,350 mi from DEN to BUF.
What is the best time to fly from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
Select a flight from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Buffalo from Denver Intl. Airport (DEN)?
Compare your flight options from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF). This is the only Buffalo airport you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Booking your plane ticket from DEN to BUF just before your journey is generally more expensive. But if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a DEN to BUF flight and hotel package?
You can save money by securing a DEN to BUF flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your preferred accommodations and flights, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF)?
Usually, it's possible to cancel or reschedule your DEN to BUF flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.