C$117 Cheap Flights from Buffalo Niagara (BUF) to Denver (DENA)

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Flight deals from Buffalo Niagara Airport to Denver

Looking for a cheap last-minute deal or the best return flight from Buffalo Niagara Airport to Denver? If you want to travel next month, return fares start from C$255. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Buffalo Niagara to Denver

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Buffalo Niagara to Denver flights are currently cheapest in April.

Which airlines fly from Buffalo Niagara to Denver?

Alternative Buffalo Niagara to Denver routes

Looking for the cheapest, fastest or easiest route from Buffalo Niagara to Denver? You could fly into the following airports instead.

Buffalo to Denver: Flight information

The things to know before you go.
Cheapest flight foundC$117
Cheapest month to flyApril
Average flight time3 hrs, 34 mins
Most popular airlineSouthwest Airlines
Average flights per week18

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

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.
The best price we found for a return flight from Buffalo Niagara to Denver is C$219. 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 34 minutes is the average flight time from Buffalo Niagara to Denver.
Southwest Airlines and United fly direct from Buffalo Niagara to Denver.
As of March 2026, there are 18 flights per week flying from Buffalo Niagara to Denver.
The cheapest month to fly from Buffalo Niagara to Denver is usually April.
If you're flying from Buffalo Niagara Airport, the cheapest airport near Denver is Denver International – which is 29.9 km away from the centre of Denver. We've found flights into this airport from C$219.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to Denver on Tuesday, April 21, 2026.
Yes – the average flight time is 3 hours and 34 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 Denver 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 Denver is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 4°C. July is typically the warmest month in Denver, when it usually averages around 31°C. You can expect the least rain in January. The coldest month is December, with temperatures averaging -6°C. The rainiest month is July.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Denver.

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

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

  • Buffalo Niagara International Airport is located in Buffalo. Operating on the UTC-6 timezone, Denver is 2 hours behind Buffalo.

  • The busiest route is from Buffalo Niagara International Airport (BUF) to Denver International Airport (DEN). There are 8 weekly services between these two airports. If you'd like to get on your way as soon as you can, the earliest flight from BUF to DEN is the 05:50 Southwest Airlines option. If you prefer travelling later, the final departure is at 22:54 with Frontier Airlines.

  • To ensure you catch your flight from BUF to Denver, allow plenty of time to navigate the airport and find your gate. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.

  • Peak months like August or vacation times such as Thanksgiving and Christmas/New Year will mean bigger lines at check-in and security. Play it safe and get to the terminal even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a wise idea.

  • Direct flights from Buffalo Niagara International Airport (BUF) to Denver are available for booking. Denver International Airport (DEN) is where you'll be touching down.

  • Southwest Airlines is a leading airline that operates direct flights from Buffalo Niagara International Airport to Denver.

  • When flying domestically within United States, you won't need a visa or passport. However, you'll have to present another kind of identification, like an ID card or driver's licence. Once you've booked flight tickets from Buffalo Niagara International Airport to Denver, make sure your ID is up to date.

  • BUF is about 18 kilometres from central Buffalo. If you're catching a cab, ride-sharing or driving from the centre, it'll take 21 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the travel time to be approximately 1 hour and 15 minutes.

  • Catching an early flight from Buffalo Niagara International Airport to Denver? Avoid the stress of rushing to the terminal (and catch some extra z's) by choosing one of these hotels close to BUF:

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

  • C$117 is the cheapest price we've seen for a one-way ticket from Buffalo Niagara International Airport to Denver. For a return flight on this route, the best price is C$219. Depending on when you want to go and the availability, these fares can change.

  • To pick up cheap tickets from BUF to Denver, reserve your journey 9 months ahead of the departure date.

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

  • Sign into your online account or use the app to create a Price Alert. We'll notify you straight away if there's a better deal on this route. It doesn't take long, and it'll save you the hassle of checking for cheap tickets from BUF to Denver every day.

  • Tailor your trip with filters. Select your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best' flights from Buffalo Niagara International Airport to Denver.

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) to the centre of Denver is about 34 minutes by car. It's approximately 40 kilometres away.

  • Travelling on public transport takes about 1 hour and 31 minutes.

  • Hop off your flight from Buffalo Niagara International Airport to Denver and be sprawled out in your hotel bed soon after. If you're looking for a comfortable option that's not too far from DEN, head for SpringHill Suites Denver Airport.

Best time to go to Denver

  • July is the most popular month for flights from Buffalo Niagara International Airport to Denver. To avoid the crowds, head to Denver in April when it's quieter.

  • When booking your flight from Buffalo Niagara International Airport to Denver, think about the kind of weather you enjoy. July is the warmest month in Denver, with temperatures ranging from 14ºC to 32ºC.

  • If you want cooler conditions, look for a cheap flight from BUF to Denver in January when temperatures average between -9ºC and 7ºC.

More about Denver

  • When it comes to searching for somewhere to lay your head, you'll find the best stays in Denver right here. Browse these hotels after locking in your flight from Buffalo Niagara International Airport to Denver:

  • All great adventures should include some sightseeing. Denver Art Museum, Union Station and Denver Botanic Gardens are essential stops on your Denver itinerary.

Complete your Denver trip with a car rental

  • Pick one of our car rentals in Denver and explore the city on your own schedule. Easily compare options in one place to find the perfect ride after booking your hotel and cheap flights from Buffalo Niagara International Airport to Denver.

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