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

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Compare Denver International to Buffalo Niagara flight deals

Find the cheapest month or even day of the year to fly to Buffalo Niagara

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Flight deals from Denver International to Buffalo Niagara

Looking for a cheap last-minute deal or the best return flight from Denver International to Buffalo Niagara? Find the lowest prices on one-way and return tickets right here.
Buffalo.$238 per passenger.Departing Wed, 18 Jun, returning Fri, 20 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 18 Jun, arriving in Buffalo Niagara.Inbound direct flight with Frontier Airlines departs from Buffalo Niagara on Fri, 20 Jun, arriving in Denver International.Price includes taxes and charges.From $238, select.
Buffalo.$249 per passenger.Departing Fri, 26 Sep, returning Sun, 28 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 26 Sep, arriving in Buffalo Niagara.Inbound direct flight with Frontier Airlines departs from Buffalo Niagara on Sun, 28 Sep, arriving in Denver International.Price includes taxes and charges.From $249, select.
Buffalo.$299 per passenger.Departing Fri, 22 Aug, returning Sat, 23 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 22 Aug, arriving in Buffalo Niagara.Inbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Sat, 23 Aug, arriving in Denver International.Price includes taxes and charges.From $299, select.
Buffalo.$307 per passenger.Departing Fri, 18 Jul, returning Mon, 21 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 18 Jul, arriving in Buffalo Niagara.Inbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Mon, 21 Jul, arriving in Denver International.Price includes taxes and charges.From $307, select.
Buffalo.$312 per passenger.Departing Fri, 22 Aug, returning Mon, 25 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 22 Aug, arriving in Buffalo Niagara.Inbound direct flight with Frontier Airlines departs from Buffalo Niagara on Mon, 25 Aug, arriving in Denver International.Price includes taxes and charges.From $312, select.
Buffalo.$345 per passenger.Departing Sat, 17 May, returning Sat, 24 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 17 May, arriving in Buffalo Niagara.Inbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Sat, 24 May, arriving in Denver International.Price includes taxes and charges.From $345, select.
Buffalo.$359 per passenger.Departing Wed, 23 Jul, returning Fri, 25 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 23 Jul, arriving in Buffalo Niagara.Inbound direct flight with Frontier Airlines departs from Buffalo Niagara on Fri, 25 Jul, arriving in Denver International.Price includes taxes and charges.From $359, select.
Buffalo.$368 per passenger.Departing Tue, 22 Jul, returning Tue, 19 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Denver International on Tue, 22 Jul, arriving in Buffalo Niagara.Inbound indirect flight with Delta, departs from Buffalo Niagara on Tue, 19 Aug, arriving in Denver International.Price includes taxes and charges.From $368, select.

Find the cheapest month to fly from Denver International to Buffalo Niagara

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to Buffalo Niagara flights are currently cheapest in June.
May
from $345
Jun
from $238
Jul
from $307
Aug
from $299
Sep
from $249
Oct
from $368
Nov
from $368
Dec
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Jan
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Feb
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Mar
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Apr
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Direct flights from Denver International to Buffalo Niagara

Denver International to Buffalo Niagara: Alternative routes

Compare routes from Denver International to Buffalo below. You may find an airport to fly into that's cheaper, faster, or easier than Buffalo Niagara.

Denver to Buffalo: Flight information

The things to know before you go.
Cheapest flight found$238
Cheapest month to flyJune
Average flight time3 hrs, 7 mins
Most popular airlineSouthwest Airlines
Average flights per week15

Finding cheap flights from Denver International to Buffalo Niagara: Frequently asked questions

The best price we found for a return flight from Denver International to Buffalo Niagara is $238. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 7 minutes is the average flight time from Denver International to Buffalo Niagara.
Southwest Airlines, United and Frontier Airlines fly direct from Denver International to Buffalo Niagara.
As of May 2025, there are 15 flights per week flying from Denver International to Buffalo Niagara.
The cheapest month to fly from Denver International to Buffalo Niagara is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to Buffalo Niagara Airport on Wednesday, 18 June 2025.
Yes – the average flight time is 3 hours and 7 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Buffalo Niagara but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Buffalo is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to Buffalo Niagara.

Flying from Denver International Airport (DEN) to Buffalo Niagara International Airport (BUF): what you need to know

  • Around 3 hours 5 minutes is how long you can expect to be travelling on a direct flight from Denver International Airport to Buffalo Niagara International Airport.

  • Choose from 16 weekly Denver International Airport to Buffalo Niagara International Airport flights. The 08:23 departure with Frontier Airlines is the earliest you can take. Southwest Airlines operates the last service of the day at 20:00.

  • To ensure you get on your DEN to BUF flight, allow plenty of time for things like baggage drop and finding your gate. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.

  • During popular months such as July, it's a good idea to get to the airport earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight when you fly during a high season in general.

  • Getting to Buffalo (and then exploring more of United States!) is easy with Frontier Airlines. This popular carrier offers direct flights from Denver International Airport to Buffalo Niagara International Airport.

  • The airline that tops the list for bookings on this route is Frontier Airlines.

  • With a dependable 80.0% of services landing on schedule, Frontier Airlines has the best on-time record for DEN to BUF flights.

  • We make it a breeze to book a flight with a stopover. To see your options for tickets from Denver International Airport to Buffalo Niagara International Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to tour your chosen city. Some great stopovers between DEN and BUF include:

    • Chicago Midway International Airport

    • Detroit Metropolitan Wayne County Airport

    • O'Hare International Airport

How to find the cheapest flights from Denver International Airport (DEN) to Buffalo Niagara International Airport (BUF)

  • The cheapest price we've found for a one-way Denver International Airport to Buffalo Niagara International Airport flight is $123. A return fare is currently $238. Depending on the availability and when you book, these fares could change.

  • Get cheap tickets from DEN to BUF by booking at least six months ahead. Based on our research, that's the sweet spot for landing a bargain.

  • Schedule your trip for May. That's the cheapest month for flights from Denver International Airport to Buffalo Niagara International Airport. If you're flexible with your travel dates, use the 'Whole month' tool to find the lowest airfare across every month.

  • There's no need to check every day to see if fares have gone down when you create a Price Alert. We'll notify you the moment the price changes on cheap flights from DEN to BUF.

  • Choose your preferred departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Denver International Airport to Buffalo Niagara International Airport.

Handy information about Denver International Airport (DEN)

  • The address for DEN is 8500 Pena Boulevard.

  • Denver International Airport earns top marks for its on-time performance. 80.23% of flights that take off from DEN reach their destination without delay.

  • Denver International Airport is around 40 kilometres from central Denver. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 35 minutes or so to arrive, depending on the traffic.

  • You can expect a journey time of around 1 hour 30 minutes when using public transport.

  • Booking a hotel room for the night can take the hassle out of reaching the airport on time. If you want somewhere to stay before your flight from Denver International Airport to Buffalo Niagara International Airport, take a look at Baymont by Wyndham Denver International Airport. It's a short ride from DEN.

Arriving at Buffalo Niagara International Airport (BUF)

  • The last thing you want is a long journey to your hotel if you're landing late on a Denver International Airport to Buffalo Niagara International Airport flight. Book one of these accommodation options near BUF instead:

  • Pick up a Buffalo Niagara International Airport rental car and explore Buffalo and beyond with your own set of wheels. Dollar, Hertz and Budget are leading providers you can book with here.

  • For the best deal, book your ride from Buffalo Niagara International Airport about two weeks before travelling.

Getting from Buffalo Niagara International Airport (BUF) to central Buffalo

  • You'll find BUF at Genesee Street.

  • Buffalo Niagara International Airport to the centre of Buffalo has a drive time of around 20 minutes. It's approximately 18 kilometres away.

  • If you're travelling on public transport, expect a journey time of about 1 hour 15 minutes.

When to fly to Buffalo Niagara International Airport (BUF)

  • The quietest month for a flight from Denver International Airport to Buffalo Niagara International Airport is May, while August is the most popular. Pick the ideal time to go to Buffalo based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Buffalo is July, with the temperature ranging between 15ºC (59ºF) and 28ºC (82ºF). Book your flights from Denver International Airport to Buffalo Niagara International Airport in this month if this is the type of weather you enjoy.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from DEN to BUF in January. Average temperatures are between -10ºC (14ºF) and 2ºC (36ºF) then.

Explore more of United States

  • New York is just one of the many cities in United States waiting to be explored once you've taken in the sights of Buffalo. Around 467 kilometres away to the south-east, its top attractions include Statue of Liberty, Central Park and Empire State Building.

  • Philadelphia is another favourite destination in United States and is around 451 kilometres south-east of Buffalo. No journey is complete without visiting Liberty Bell, Independence Hall and Philadelphia Museum of Art.

Plan the rest of your trip from Denver to Buffalo

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.