$38 Cheap Flights from Buffalo (BUF) to Denver (DEN)

View $38 flight on Mon, Sep 15, 2025Opens in a new window

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

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Cheap Flights from Buffalo to Denver (BUF-DEN)

Prices were available within the past 7 days and start at $38 for one-way flights and $111 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Sep 22 - Mon, Sep 29
BUF
Buffalo
DEN
Denver
$111 Roundtrip, found 6 hours ago
$111
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Sep 22 from Buffalo to Denver, returning Mon, Sep 29, priced at $111 found 6 hours ago
Frontier Airlines
Sun, Aug 31 - Sun, Sep 7
BUF
Buffalo
DEN
Denver
$119 Roundtrip, found 2 days ago
$119
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Aug 31 from Buffalo to Denver, returning Sun, Sep 7, priced at $119 found 2 days ago
Frontier Airlines
Mon, Sep 15 - Sun, Sep 21
BUF
Buffalo
DEN
Denver
$119 Roundtrip, found 3 hours ago
$119
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Mon, Sep 15 from Buffalo to Denver, returning Sun, Sep 21, priced at $119 found 3 hours ago
Frontier Airlines
Fri, Sep 5 - Sun, Sep 7
BUF
Buffalo
DEN
Denver
$123 Roundtrip, found 3 hours ago
$123
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Fri, Sep 5 from Buffalo to Denver, returning Sun, Sep 7, priced at $123 found 3 hours ago
Frontier Airlines
Fri, Sep 5 - Mon, Sep 8
BUF
Buffalo
DEN
Denver
$134 Roundtrip, found 19 hours ago
$134
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Fri, Sep 5 from Buffalo to Denver, returning Mon, Sep 8, priced at $134 found 19 hours ago
Frontier Airlines
Fri, Sep 26 - Mon, Sep 29
BUF
Buffalo
DEN
Denver
$140 Roundtrip, found 5 hours ago
$140
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Sep 26 from Buffalo to Denver, returning Mon, Sep 29, priced at $140 found 5 hours ago
Delta
Thu, Oct 2 - Mon, Oct 6
BUF
Buffalo
DEN
Denver
$156 Roundtrip, found 12 hours ago
$156
Roundtrip
found 12 hours ago
Select Delta flight, departing Thu, Oct 2 from Buffalo to Denver, returning Mon, Oct 6, priced at $156 found 12 hours ago
JetBlue Airways
Thu, Oct 2 - Mon, Oct 6
BUF
Buffalo
DEN
Denver
$176 Roundtrip, found 12 hours ago
$176
Roundtrip
found 12 hours ago
Select JetBlue Airways flight, departing Thu, Oct 2 from Buffalo to Denver, returning Mon, Oct 6, priced at $176 found 12 hours ago
United
Thu, Nov 13 - Sun, Nov 16
BUF
Buffalo
DEN
Denver
$217 Roundtrip, found 22 hours ago
$217
Roundtrip
found 22 hours ago
Select United flight, departing Thu, Nov 13 from Buffalo to Denver, returning Sun, Nov 16, priced at $217 found 22 hours ago
Southwest Airlines
Thu, Nov 13 - Sun, Nov 16
BUF
Buffalo
DEN
Denver
$237 Roundtrip, found 22 hours ago
$237
Roundtrip
found 22 hours ago
Select Southwest Airlines flight, departing Thu, Nov 13 from Buffalo to Denver, returning Sun, Nov 16, priced at $237 found 22 hours ago

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

January is typically the cheapest month to fly

From $118 - $373 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $271
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $271
Flights from Buffalo (BUF) to Denver (DEN)
Origin airport
Buffalo Niagara Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$111
Distance
1355 mi
Average flight time
1 hour 31 mins

Buffalo to Denver Flights

The cheapest times to fly from Buffalo to Denver

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 Buffalo to Denver are during the month of September. You can find some of the cheapest flights from Buffalo to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to Denver

Sunday is one of the best days to book for cheap flights from Buffalo to Denver: 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 Buffalo to Denver

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 Buffalo to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $38 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 Buffalo to Denver 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 Buffalo to Denver 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 Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN) cost?
Grab a cheap one-way flight from $38 or cheap return flight from $111 from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
The cheapest month to fly from BUF to DEN is September, when there's less demand. Off-peak season is typically when better flight deals are available between these airports.
Which airlines fly direct from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
When flying out of Buffalo Niagara Intl. Airport (BUF), you can catch a nonstop flight to Denver Intl. Airport (DEN) with Southwest Airlines.
What is the cheapest airline that flies from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from BUF to DEN. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
On average, you can take your pick of 4 direct flights flying from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN) per week. If you can't find one that fits your schedule, think about a flight that includes a layover. Filter your search on Expedia to include one stop or more and opt for the best alternative.
What are the most popular departure times for flights from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
Flights between BUF and DEN are their busiest at 7 AM. If you'd like a more relaxed atmosphere and possibly cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from BUF to DEN?
Travel on a Friday if you're looking for the best selection of flights from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN).
What is the earliest flight from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
Buffalo Niagara Intl. Airport (BUF)'s first flight to Denver Intl. Airport (DEN) takes off at approximately 7:15AM UTC-5. With a total flight time of 3h 55m, you'll arrive at around 9:10AM UTC-7.
How long does it take to fly from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
The average flight duration from BUF to DEN is 3 hours and 54 minutes, covering a total distance of 1,350 mi.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
To avoid potential delays on the Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN) route, travel before 3 PM. Later flights have a 22% higher chance of being 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 Denver from Buffalo Niagara Intl. Airport (BUF)?
If you're traveling on a direct flight from Buffalo Niagara Intl. Airport (BUF) to Denver, Denver Intl. Airport (DEN) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN) last-minute?
Booking your ticket from BUF to DEN shortly before your trip is generally more expensive. But if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a BUF to DEN flight and hotel package?
Compared with arranging flights and hotels separately, booking a BUF to DEN flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to Denver Intl. Airport (DEN)?
If you reserved your BUF to DEN flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.