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

Featured airlines

Qantas Airways
Virgin Australia
Air New Zealand
Jetstar
Fiji Airways
Singapore Airlines
Philippine Airlines
Qatar Airways
Scoot
  • Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 35% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Beautiful view of the beach with palm trees

Black Friday: Members save 30%+

Members save 30%+ on selected hotels until 4 Dec (property time) with our Black Friday deals. Stay by 15 Dec 2025.
Unlock Black Friday deals
Flight from Denver to Buffalo route information
Origin airport
Denver Intl.
Destination airport
Buffalo Niagara Intl.
Distance
2169 km
Average flight time
6 hours 7 mins

Your quick guide to flights from Denver to Buffalo

Pick up great flights from Denver to Buffalo

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Denver to Buffalo. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Denver to Buffalo that take around hours.

Find cheap flights from Denver to Buffalo

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Denver to Buffalo around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Buffalo is normally in .

Reasons to book your flight from Denver to Buffalo with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Denver to Buffalo across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Buffalo right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Denver Airport to BUF?
Round-trip tickets from DEN to Buffalo Niagara Intl. Airport (BUF) start from . This figure is based on fares offered within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Denver Airport to Buffalo Niagara International Airport?
The majority of flights can be cancelled online, but each airline has different terms and conditions. If you do decide to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from DIA airport to Buffalo Niagara International Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for DEN to BUF flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from DIA airport to Buffalo Niagara International Airport?
The flying distance from Denver Intl. Airport (DEN) to Buffalo Niagara Intl. Airport (BUF) is 2 200 kilometres. Listen to your favourite tunes or make a start on the latest bestseller and the journey will fly by.
Which airlines fly direct from DEN to Buffalo Niagara International Airport?
Many adventurers choose to fly with Southwest Airlines (WN) from DIA airport to BUF. This leading airline offers 26 monthly flights, so you can pick a flight time that’s perfect for you. You could also check out fares with Frontier Airlines (F9). It operates 26 flights every month between Denver and Buffalo.
Are DIA airport to BUF flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Denver Intl. Airport (DEN) to BUF are available up to a year before departure on Expedia. And although you may occasionally pick up a fantastic last-minute deal, it’s never a sure thing. Also, booking your flights ahead of time means you’ll have more options — and you can avoid ending up with the dreaded middle seat! We’re always updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials.
*Available to Expedia members.