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Cheap Flights from Ontario International to Buffalo Niagara

Compare Ontario International to Buffalo Niagara flight deals

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

Book the best Buffalo Niagara fare with no extra fees

Flight deals from Ontario International to Buffalo Niagara

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Buffalo Niagara Airport? If you want to travel next month, return fares start from Rs81,389. Find the lowest prices on one-way and return tickets right here.
Buffalo.Rs30,481 per passenger.Departing Tue, 9 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 9 Jun, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs30,481, select.
Buffalo.Rs41,658 per passenger.Departing Tue, 7 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 7 Jul, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs41,658, select.
Buffalo.Rs51,013 per passenger.Departing Wed, 27 May.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 27 May, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs51,013, select.
Buffalo.Rs51,013 per passenger.Departing Tue, 1 Sep.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 1 Sep, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs51,013, select.
Buffalo.Rs51,180 per passenger.Departing Tue, 11 Aug.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 11 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs51,180, select.
Buffalo.Rs54,087 per passenger.Departing Tue, 20 Oct.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 20 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs54,087, select.
Buffalo.Rs58,032 per passenger.Departing Tue, 29 Dec.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 29 Dec, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs58,032, select.
Buffalo.Rs58,284 per passenger.Departing Tue, 24 Nov.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 24 Nov, arriving in Buffalo Niagara.Price includes taxes and charges.From Rs58,284, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Buffalo Niagara flights are currently cheapest in June.
May
from Rs51,013
Jun
from Rs30,481
Jul
from Rs41,658
Aug
from Rs51,180
Sep
from Rs51,013
Oct
from Rs54,087
Nov
from Rs58,284
Dec
from Rs58,032
Jan
Find prices
Feb
Find prices
Mar
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Apr
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Ontario International to Buffalo Niagara: Alternative routes

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

Buffalo Niagara

13km from central Buffalo
ClosestCheapest
from Rs30,481
Search flights

Niagara Falls

24km from central Buffalo
from Rs94,565
Search flights

Jamestown

88km from central Buffalo
Search flights

Ontario to Buffalo: Flight information

The things to know before you go.
Cheapest flight foundRs30,481
Cheapest month to flyJune

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

The best price we found for a return flight from Ontario International to Buffalo Niagara is Rs81,389. 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.
Currently, there are no airlines that fly direct from Ontario International to Buffalo Niagara. But we found flights with one or more stops from Rs81,389.
As of May 2026, there are no flights flying from Ontario International to Buffalo Niagara.
The cheapest month to fly from Ontario International to Buffalo Niagara is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Buffalo Niagara Airport on Monday, 1 June 2026.
No airlines currently offer direct flights between Ontario International Airport and Buffalo Niagara Airport. Most routes have one or more stops.
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 Ontario International Airport (ONT) to Buffalo Niagara International Airport (BUF): what you need to know

  • Your ONT to BUF flight won't wait if you're late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • Flying during a peak month such as August? Major public holidays and other popular periods can result in longer queues at security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • We make it easy to book a flight with a stopover. To see all your options for tickets from Ontario International Airport to Buffalo Niagara International Airport, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to visit your chosen city. Top stopovers between ONT and BUF include:

    • Harry Reid Airport (formerly McCarran Airport)

    • Denver International Airport

    • Charlotte Douglas International Airport

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

  • Rs30,481 is the best price for a one-way Ontario International Airport to Buffalo Niagara International Airport flight. Return flights start at Rs81,389. These prices can change based on demand and availability.

  • Don't wait until the last moment. You're more likely to find cheap tickets from ONT to BUF if you book early. Airlines often have some great early bird discounts.

  • The 'Whole month' search function shows you the cheapest flights from Ontario International Airport to Buffalo Niagara International Airport throughout the entire month. It's a good way to snap up a bargain if your travel plans are flexible.

  • Cut down on the time spent looking for cheap flights from ONT to BUF by setting up a Price Alert. We'll send you an email or notification on the app when a lower fare becomes available.

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

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport maintains a strong on-time performance, so you're less likely to experience disruptions. Departures from ONT arrive on schedule 83.6% of the time.

  • To reach Ontario International Airport from central Ontario, it takes around 10 minutes if you're planning to drive. This depends on traffic, however. It's approximately 6 kilometres from the airport to the city centre.

  • Planning to catch public transport? Expect a trip time of around 1 hour 30 minutes.

  • Need a handy hotel close to ONT? If you're catching an early flight from Ontario International Airport to Buffalo Niagara International Airport, these stays will have you moments from check-in:

Arriving at Buffalo Niagara International Airport (BUF)

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

  • Get on the fast track to adventure by picking up a Buffalo Niagara International Airport rental car. Grab your wheels from Dollar, Hertz or Budget and explore beyond Buffalo's main sights.

  • Reserving your ride from Buffalo Niagara International Airport about two weeks in advance can help you get the lowest rate.

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

  • The address for BUF is 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.

  • It takes around 1 hour 15 minutes to get there using public transport.

When to fly to Buffalo Niagara International Airport (BUF)

  • August is the most popular month for flights from Ontario International Airport to Buffalo Niagara International Airport. To avoid the crowds, visit Buffalo in May.

  • Book your flight from Ontario International Airport to Buffalo Niagara International Airport for July if you'd like to visit Buffalo during its warmest month. You can expect temperatures of between 15ºC and 28ºC.

  • Look for cheap tickets from ONT to BUF in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between -10ºC and 2ºC on average.

Explore more of United States

  • You've seen Buffalo, now it's time to discover other parts of United States. Travel around 467 kilometres south-east to New York to check off its top sights. From Statue of Liberty to Central Park and Empire State Building, there's plenty to keep you busy.

  • Around 451 kilometres south-east of Buffalo, Philadelphia is another favourite stop in United States. Experience the best of this destination with a visit to Liberty Bell, Independence Hall and Philadelphia Museum of Art.

Plan the rest of your trip from Ontario to Buffalo

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