Cheap Flights from Buffalo Niagara to Ontario International

Compare Buffalo Niagara to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Buffalo Niagara to Ontario International

Looking for a cheap last-minute deal or the best return flight from Buffalo Niagara Airport to Ontario International Airport? If you want to travel next month, return fares start from R 5,796. Find the lowest prices on one-way and return tickets right here.

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

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

Buffalo to Ontario: Flight information

The things to know before you go.
Cheapest flight foundR 2,308
Cheapest month to flyAugust

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

The best price we found for a return flight from Buffalo Niagara to Ontario International is R 5,646. 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 Buffalo Niagara to Ontario International. But we found flights with one or more stops from R 5,643.
As of July 2026, there are no flights flying from Buffalo Niagara to Ontario International.
The cheapest month to fly from Buffalo Niagara to Ontario International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to Ontario International Airport on Wednesday, 26 August 2026.
No airlines currently offer direct flights between Buffalo Niagara Airport and Ontario International 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 Ontario International 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 Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Southwest Airlines offers the cheapest flight tickets to Ontario International.

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

  • The timezone in Ontario is UTC-8, which is three hours behind Buffalo.

  • Give yourself enough time to catch your BUF to ONT flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer lines during popular months like August. Arriving up to four hours ahead of international flights and two hours for domestic departures is a wise move.

  • Think about adding a stopover when booking your ticket from Buffalo Niagara Airport to Ontario International Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps see a new city along the way. Check out these options between BUF and ONT:

    • Harry Reid International Airport

    • Nashville Airport

    • Chicago Midway Airport

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

  • At the moment, R 2,307 is the lowest price we've seen for a one-way Buffalo Niagara Airport to Ontario International Airport flight. The best price for a return plane ticket is R 5,643. Bear in mind that fares may change due to availability when booking.

  • It's a good idea to book as early as possible if you want to get cheap tickets from BUF to ONT. That's because flight prices are based on demand, which tends to rise closer to departure.

  • The 'Whole month' search function shows you the cheapest flights from Buffalo Niagara Airport to Ontario International Airport throughout the entire month. It's an easy way to find a bargain if your travel dates aren't set in stone.

  • Save time looking for cheap flights from BUF to ONT by setting up a Price Alert. You'll get an email or notification on the app when a new low fare is offered.

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

Handy information about Buffalo Niagara Airport (BUF)

  • The address for BUF is Genesee Street.

  • 74% of flights leaving from Buffalo Niagara Airport make it to their destination on schedule.

  • Central Buffalo to Buffalo Niagara Airport is approximately 16 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're driving, catching a taxi or ride-sharing.

  • Catching public transport? You can expect a journey time of around 40 minutes.

  • Searching for a handy hotel close to BUF? If you've booked an early flight from Buffalo Niagara Airport to Ontario International Airport, these accommodation options will put you moments from your departure lounge:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • You'll find ONT at 2900 E. Airport Drive.

  • Ontario International Airport to central Ontario has a drive time of about 15 minutes. It's approximately 10 kilometres away.

  • When travelling on public transport, expect a journey of roughly 45 minutes.

When to fly to Ontario International Airport (ONT)

  • July is the most popular month for flights from Buffalo Niagara Airport to Ontario International Airport. For smaller crowds, go to Ontario in March.

  • When reserving your flight from Buffalo Niagara Airport to Ontario International Airport, think about the type of weather you enjoy. August is the warmest month in Ontario, with the temperature ranging from 16ºC (61ºF) to 36ºC (97ºF).

  • February sees average temperatures of between 4ºC (39ºF) and 24ºC (75ºF). Search for cheap tickets from BUF to ONT sometime then if you want to travel when it's cooler.

Explore more of the United States

  • Ontario has plenty to offer, but there are so many other corners of the United States just waiting to be discovered. About 56 kilometres west of Ontario, a trip to Los Angeles will keep your itinerary busy. Start with attractions like Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

  • Around 153 kilometres south of Ontario, San Diego is another essential stop in the United States. Get a taste of what this destination has to offer at San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.