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CA $208 Cheap Flights from Buffalo (BUF) to Ontario Intl. Airport (ONT)

View CA $208 flight on Fri, Aug 14, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Ontario Intl. Airport (ONT)

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Cheap flights from Buffalo (BUF) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at CA $208 for one-way flights and CA $416 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Aug 21 - Fri, Aug 28
BUF
Buffalo
ONT
Ontario
CA $416 Roundtrip, found 1 hour ago
CA $416
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Aug 21 from Buffalo to Ontario, returning Fri, Aug 28, priced at CA $416 found 1 hour ago
American Airlines
Fri, Aug 14 - Tue, Aug 18
BUF
Buffalo
ONT
Ontario
CA $418 Roundtrip, just found
CA $418
Roundtrip
just found
Select American Airlines flight, departing Fri, Aug 14 from Buffalo to Ontario, returning Tue, Aug 18, priced at CA $418 just found
Delta
Thu, Aug 27 - Tue, Sep 1
BUF
Buffalo
ONT
Ontario
CA $421 Roundtrip, found 6 hours ago
CA $421
Roundtrip
found 6 hours ago
Select Delta flight, departing Thu, Aug 27 from Buffalo to Ontario, returning Tue, Sep 1, priced at CA $421 found 6 hours ago
American Airlines
Sat, Aug 22 - Sat, Aug 29
BUF
Buffalo
ONT
Ontario
CA $463 Roundtrip, found 7 hours ago
CA $463
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Sat, Aug 22 from Buffalo to Ontario, returning Sat, Aug 29, priced at CA $463 found 7 hours ago
American Airlines
Fri, Aug 21 - Fri, Aug 28
BUF
Buffalo
ONT
Ontario
CA $486 Roundtrip, found 1 hour ago
CA $486
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Aug 21 from Buffalo to Ontario, returning Fri, Aug 28, priced at CA $486 found 1 hour ago
American Airlines
Fri, Aug 14 - Tue, Aug 18
BUF
Buffalo
ONT
Ontario
CA $488 Roundtrip, just found
CA $488
Roundtrip
just found
Select American Airlines flight, departing Fri, Aug 14 from Buffalo to Ontario, returning Tue, Aug 18, priced at CA $488 just found
American Airlines
Thu, Aug 27 - Tue, Sep 1
BUF
Buffalo
ONT
Ontario
CA $499 Roundtrip, found 6 hours ago
CA $499
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Aug 27 from Buffalo to Ontario, returning Tue, Sep 1, priced at CA $499 found 6 hours ago
JetBlue Airways
Tue, Sep 22 - Fri, Sep 25
BUF
Buffalo
ONT
Ontario
CA $529 Roundtrip, found 3 days ago
CA $529
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Tue, Sep 22 from Buffalo to Ontario, returning Fri, Sep 25, priced at CA $529 found 3 days ago
United
Thu, Aug 27 - Tue, Sep 1
BUF
Buffalo
ONT
Ontario
CA $625 Roundtrip, found 6 hours ago
CA $625
Roundtrip
found 6 hours ago
Select United flight, departing Thu, Aug 27 from Buffalo to Ontario, returning Tue, Sep 1, priced at CA $625 found 6 hours ago
Alaska Airlines
Wed, Sep 23 - Mon, Sep 28
BUF
Buffalo
ONT
Ontario
CA $965 Roundtrip, found 5 days ago
CA $965
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Sep 23 from Buffalo to Ontario, returning Mon, Sep 28, priced at CA $965 found 5 days ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Los Angeles - Ontario Intl. ONT. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from CA $748
ONT
Los Angeles - Ontario Intl.
CheapestClosest
Average driving time to city centre8 min
Flights from CA $748

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) cost?
You can find cheap one-way flights from CA $208 and cheap return flights from CA $416 BUF to ONT with Expedia. One-way flights typically cost between CA$624 and CA$2167, and return flights often range between CA$619 and CA$1668. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BUF to ONT ticket fares go up or down.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
August is typically the cheapest month to fly from Buffalo Niagara International Airport (BUF) to Ontario International Airport (ONT), with average return fares around CA$431. August often sees lower prices as the peak summer travel season begins to wind down. May and November are also good months to find deals on this route.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
Enter BUF to ONT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
Southwest Airlines is one of the cheapest airlines offering connecting return flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT), with prices starting from around CA$409 for flights that can be booked for departure within the next year. These flights typically include a layover in Baltimore Washington Intl. Thurgood Marshall (BWI). These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
The cheapest months to fly from Buffalo Niagara International Airport (BUF) to Ontario International Airport (ONT) are typically August and November, with average return flights around CA$431. However, the most popular months for this route, meaning you'll have more flight options, are March and April. Since there isn't an overlap between the cheapest and most popular months, you might consider balancing your priorities: if saving money is key, aim for August or November; if having the most flight choices is important, March or April would be better.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
There are approximately 40 connecting flights per day from Buffalo Niagara Intl. (BUF) to Ontario Intl. Airport (ONT). Some common connection points include Baltimore Washington Intl. Thurgood Marshall (BWI), Midway Intl. (MDW), and O'Hare Intl. (ORD).
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
The earliest flight from Buffalo Niagara Intl. (BUF) to Ontario Intl. Airport (ONT) typically departs around 5:00 AM local time, operated by American Airlines. This is a seasonal service active only in April. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
You'll typically find the most flights from Buffalo Niagara Intl. (BUF) to Ontario Intl. Airport (ONT) on a Thursday, with around 31 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, United, and Southwest Airlines. Flight schedules are quite consistent throughout the week, so you'll have plenty of choices no matter when you plan to fly.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
The most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) are in the early morning, from 6am to 9am. Many major carriers, including American Airlines, Southwest Airlines and United, offer flights during this window. Many travellers prefer this time as it allows for an early start to their journey, giving them more time at their destination.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
There are no nonstop flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT). The distance between these two airports is approximately 3,489 kilometers. If you're looking for a flight with one stop, you can expect the journey to take around 7 hours 48 minutes. Flights with two or more stops typically take longer, averaging about 12 hours 18 minutes. Keep in mind that actual travel times can vary depending on your specific routing, layover durations, and factors like wind patterns.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
You can fly first class between BUF and ONT. First class cabins are available on Delta, United, and American Airlines.
How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Ontario Intl. Airport (ONT) from Buffalo, NY (BUF)?
If you're planning to travel to Ontario from Buffalo Niagara Intl. (BUF), you can fly directly into Los Angeles - Ontario Intl. (ONT) which offers international flights and connections. Some flights may connect through major hubs like O'Hare Intl. (ORD), Baltimore Washington Intl. Thurgood Marshall (BWI), or LaGuardia (LGA) before reaching Ontario. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to Ontario Intl. Airport (ONT) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Ontario Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Roundtrip price
CA $416
Distance
3467 km

Book with confidence

Buffalo to Los Angeles Flights

The easy way to book your flights from Buffalo to Ontario Intl. Airport 

With Expedia, it’s simple to find and book flights to Ontario Intl. Airport from Buffalo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Ontario Intl. Airport, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Buffalo to Ontario Intl. Airport today, tomorrow, or this week.  

 

Save dollars with cheap flights from Buffalo Niagara Intl., BUF to Ontario Intl. Airport, ONT 

Sort your search results by price to find great deals on your flight from Buffalo to Ontario Intl. Airport—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Ontario Intl. Airport from Buffalo currently is just CA $416 rising to CA $965.  

Here are more money-saving tips: 

  • Fly in August when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Ontario Intl. Airport  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Ontario Intl. Airport from Buffalo 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Ontario Intl. Airport with Expedia today.

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