$90 Cheap Flights from Denver (DEN) to Buffalo (BUF)

View $90 flight on Wed, Sep 2, 2026Opens in a new window

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

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Cheap Flights from Denver to Buffalo (DEN-BUF)

Prices were available within the past 7 days and start at $90 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Aug 25 - Tue, Sep 1
DEN
Denver
BUF
Buffalo
$179 Roundtrip, found 19 hours ago
$179
Roundtrip
found 19 hours ago
Select JetBlue Airways flight, departing Tue, Aug 25 from Denver to Buffalo, returning Tue, Sep 1, priced at $179 found 19 hours ago
JetBlue Airways
Tue, Sep 1 - Sun, Sep 6
DEN
Denver
BUF
Buffalo
$202 Roundtrip, found 8 hours ago
$202
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Tue, Sep 1 from Denver to Buffalo, returning Sun, Sep 6, priced at $202 found 8 hours ago
JetBlue Airways
Thu, Aug 27 - Mon, Aug 31
DEN
Denver
BUF
Buffalo
$209 Roundtrip, found 11 hours ago
$209
Roundtrip
found 11 hours ago
Select JetBlue Airways flight, departing Thu, Aug 27 from Denver to Buffalo, returning Mon, Aug 31, priced at $209 found 11 hours ago
JetBlue Airways
Tue, Jul 28 - Wed, Aug 5
DEN
Denver
BUF
Buffalo
$225 Roundtrip, found 19 hours ago
$225
Roundtrip
found 19 hours ago
Select JetBlue Airways flight, departing Tue, Jul 28 from Denver to Buffalo, returning Wed, Aug 5, priced at $225 found 19 hours ago
JetBlue Airways
Wed, Sep 2 - Wed, Sep 9
DEN
Denver
BUF
Buffalo
$230 Roundtrip, found 15 hours ago
$230
Roundtrip
found 15 hours ago
Select JetBlue Airways flight, departing Wed, Sep 2 from Denver to Buffalo, returning Wed, Sep 9, priced at $230 found 15 hours ago
JetBlue Airways
Tue, Sep 1 - Tue, Sep 8
DEN
Denver
BUF
Buffalo
$235 Roundtrip, found 8 hours ago
$235
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Tue, Sep 1 from Denver to Buffalo, returning Tue, Sep 8, priced at $235 found 8 hours ago
Frontier Airlines
Fri, Aug 28 - Wed, Sep 2
DEN
Denver
BUF
Buffalo
$249 Roundtrip, found 9 hours ago
$249
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, Aug 28 from Denver to Buffalo, returning Wed, Sep 2, priced at $249 found 9 hours ago
Delta
Thu, Oct 29 - Tue, Nov 3
DEN
Denver
BUF
Buffalo
$361 Roundtrip, found 21 hours ago
$361
Roundtrip
found 21 hours ago
Select Delta flight, departing Thu, Oct 29 from Denver to Buffalo, returning Tue, Nov 3, priced at $361 found 21 hours ago
United
Wed, Aug 26 - Wed, Sep 2
DEN
Denver
BUF
Buffalo
$399 Roundtrip, found 1 hour ago
$399
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Aug 26 from Denver to Buffalo, returning Wed, Sep 2, priced at $399 found 1 hour ago
Southwest Airlines
Wed, Aug 26 - Wed, Sep 2
DEN
Denver
BUF
Buffalo
$409 Roundtrip, found 1 hour ago
$409
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Wed, Aug 26 from Denver to Buffalo, returning Wed, Sep 2, priced at $409 found 1 hour ago

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 $344
BUF
Buffalo Niagara Intl.
CheapestClosest
Average driving time to city center16 min
Flights from $344

What you need to know for your flight from Denver Intl. to Buffalo Niagara Intl.

Denver (DEN) to Buffalo (BUF) at a glance

Travel between Denver (DEN) and Buffalo (BUF) with a range of airlines offering one-way flights on this domestic short-haul route. Use a flight finder to compare services from both full-service and budget carriers, helping you choose the best itinerary that aligns with your budget and travel schedule. Discover the latest deals on flights as you plan your visit to Buffalo’s renowned attractions and neighborhoods, starting your journey from Denver International Airport (DEN) to Buffalo Niagara International Airport (BUF).

  • Fastest flight duration: around 3h 15m non-stop
  • Route distance: roughly 1,400 miles (2,250 km)
  • Flights per week: around 20+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $85–$405, depending on seasonality and how far ahead you book

Flights from Denver International Airport (DEN) to Buffalo Niagara International Airport (BUF)

Based on recent traveler bookings, here are the top airlines favored for flights from Denver to Buffalo, featuring both non-stop and one-stop options. Popular layover destinations include O'Hare International Airport (ORD) with approximately a 1 hour and 15-minute layover, Detroit Metropolitan Wayne County Airport (DTW) at about 1 hour and 30 minutes, and Midway International Airport (MDW) with a 1-hour layover. These choices allow you to balance price, travel duration, and cabin class to craft the ideal itinerary for your journey.

  • United: This full-service airline provides both non-stop and one-stop options, with one-way fares generally falling between $105 and $500. It comprises about 25% of departures on this route, and the average non-stop flight duration is 3 hours and 15 minutes.
  • Southwest Airlines: As a low-cost airline, Southwest offers both non-stop and one-stop services, with one-way fares typically ranging from $110 to $510. It accounts for around 25% of departures on this route, with a standard non-stop flight time of 3 hours and 15 minutes.
  • American Airlines: This full-service carrier provides one-stop services, with one-way fares usually between $90 and $360. American Airlines represents about 21% of departures for this route, with a flight time of 4 hours and 30 minutes, totaling roughly 6 hours and 15 minutes including layovers.
  • Delta: Another full-service airline, Delta offers one-stop services with one-way fares typically from $110 to $395. It makes up approximately 13% of departures on this route, featuring a travel time of 4 hours and 30 minutes, amounting to about 6 hours and 15 minutes overall including layovers.
  • Frontier Airlines: This low-cost carrier provides both non-stop and one-stop options, with one-way fares usually ranging from $85 to $240. Frontier accounts for around 12% of departures on this route, with a typical non-stop flight duration of 3 hours and 15 minutes.

Travelers have the option to upgrade their flight from Denver to Buffalo, with both United and Delta providing first-class service for this route.

Best time to fly from Denver (DEN) to Buffalo (BUF)

The most popular months for travelers flying from Denver to Buffalo are June, July, and August, when peak temperatures in Buffalo reach up to 72°F in July. If you prefer quieter travel, consider December, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 33.1°F. For better deals, June and August usually offer the lowest average one-way fares around $186. Flight availability peaks in June, with approximately 28 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 15 flights per week.

  • Cheapest time to fly: June and August usually offer good deals with average one-way fares around $186, roughly 11% cheaper than the yearly average.
  • More budget-friendly months to fly: July and September typically offer average one-way fares of around $189.
  • Most flight options: June has the highest number of flights from Denver to Buffalo, with approximately 28 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January25.5°F (-3.6°C)Average17$212
February26.1°F (-3.3°C)Moderately Low15$239
March34.3°F (1.3°C)Average16$242
April45.0°F (7.2°C)Average18$227
May57.7°F (14.3°C)Average21$202
June66.0°F (18.9°C)Moderately High28$186
July72.0°F (22.2°C)Moderately High26$188
August70.7°F (21.5°C)Moderately High26$186
September64.6°F (18.1°C)Average24$190
October53.2°F (11.8°C)Average24$194
November41.4°F (5.2°C)Moderately Low20$237
December33.1°F (0.6°C)Moderately Low24$226

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Denver (DEN) to Buffalo (BUF)

  • Denver to Rochester (DEN-ROC): Greater Rochester International Airport (ROC) is approximately 56 miles from Buffalo Niagara International Airport (BUF). On this route, one-way economy fares typically fall between $105 and $390, influenced by the time of year and how far in advance you book. Travelers can choose from one-stop and multi-stop flights, with common layover points being O'Hare International Airport (ORD) and Midway International Airport (MDW). Major airlines serving this route include American Airlines and United, with first-class service also offered.
  • Colorado Springs to Buffalo (COS-BUF): Colorado Springs Airport (COS) is located about 73 miles from Denver International Airport (DEN). The one-way economy fares for this route generally range from $115 to $390, varying based on the season and booking lead time. Passengers can select from both one-stop and multi-stop flights, with Denver International Airport (DEN) and O'Hare International Airport (ORD) being popular layover choices. Key airlines operating on this route include United and low-cost carrier Southwest Airlines, along with first-class service available as well.

How to find the best prices for flights from Denver (DEN) to Buffalo (BUF)

Getting some of the best deals on flights from Denver to Buffalo is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book between two to eight weeks ahead. Departures in the morning, from 5 AM to 12 PM, are not only the most popular but also tend to offer lower prices; meanwhile, flying on Monday generally results in cheaper fares, while Friday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Buffalo Niagara International Airport from Denver International Airport

Buffalo welcomes travelers from Denver with a range of transport options based on price, convenience, and proximity. Here's how to reach Buffalo efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Buffalo, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Buffalo Niagara International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Buffalo Niagara International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Buffalo Niagara International Airport, Buffalo-Depew Station, a train station, is located about 2.6 miles away by car, while University Station, a metro station, is about 6.5 miles away by car, providing convenient options for onward travel.

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) cost?
You can find cheap one-way flights from $90 and cheap return flights from $179 Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) with Expedia. One-way flights typically cost between $166 and $837, and return flights often range between $344 and $1603. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
September is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.), with average round-trip fares around $336. This is about 15% lower than the average price throughout the year, as travel demand typically decreases after the summer. Other affordable months include April and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
You can fly direct from DEN to BUF on United, with around 13 flights per week.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
United is one of the cheapest airlines offering nonstop flights from Denver Intl. (DEN) to Buffalo Niagara Intl. (BUF), with round-trip tickets starting from around $369. This is a convenient option if you prefer a direct flight. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The best airline to fly with from Denver, CO (DEN) to Buffalo, NY (BUF) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. WN offers the most daily flights from Denver to Buffalo, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
For flights from Denver (DEN) to Buffalo (BUF), September and April are the best months to consider. September is the cheapest month with return flights averaging around $336, while April is also a good time to travel. These months provide a nice balance of price and availability, ensuring a smooth travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
You can find approximately 2 nonstop flights per day from Denver Intl. (DEN) to Buffalo Niagara Intl. (BUF). For more options, look at flights that include layovers.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The earliest flight from Denver International Airport (DEN) to Buffalo Niagara International Airport (BUF) typically departs at 12:00 AM local time, operated by Frontier Airlines. This is a seasonal service active in August, allowing you to start your journey early and make the most of your time in Buffalo. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The most popular departure times for flights from Denver International Airport (DEN) to Buffalo Niagara International Airport (BUF) are in the early morning, from 6am to 9am. About 26% of passengers prefer this time window. Many major carriers, including American Airlines, Southwest Airlines, and United Airlines, offer flights during this window. This timing works well because it allows you to arrive in Buffalo with plenty of time to start your day.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
A nonstop flight from DEN to BUF typically takes around 3 hours 20 minutes, covering approximately 1,356 miles. Connecting flights on this route usually add 5 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
First class is available on flights from DEN to BUF. First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines

How much is a business class flight from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
A direct, return business class ticket from Denver (DEN) to Buffalo (BUF) typically costs between $1,705 - $2,307. there is no data available for one-way prices. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Buffalo from Denver Intl. (DEN)?
If you're planning to travel to Buffalo from Denver Intl. (DEN), you can fly into Buffalo Niagara Intl. (BUF) Some flights may connect through major hubs like Eppley Field (OMA), Kansas City Intl. (MCI), Love Field (DAL) before reaching Buffalo. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) Buffalo Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
If you booked your Denver, CO (DEN-Denver Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Denver Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$178
Distance
1355 mi
Average flight time
5 hours 26 mins

Book with confidence

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 August. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $90 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.

 

Denver to Buffalo Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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