$134 Cheap Flights from Buffalo (BUF) to Ontario (ONT)

View $134 flight on Wed, Aug 13, 2025Opens in a new window

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

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Cheap Flights from Buffalo to Ontario (BUF-ONT)

Prices were available within the past 7 days and start at $134 for one-way flights and $278 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Sep 7 - Sat, Sep 13
BUF
Buffalo
ONT
Ontario
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Sep 7 from Buffalo to Ontario, returning Sat, Sep 13, priced at $278 found 1 day ago
Southwest Airlines
Tue, Dec 9 - Wed, Dec 17
BUF
Buffalo
ONT
Ontario
$287 Roundtrip, found 4 days ago
$287
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Dec 9 from Buffalo to Ontario, returning Wed, Dec 17, priced at $287 found 4 days ago
United
Sat, Aug 30 - Tue, Sep 2
BUF
Buffalo
ONT
Ontario
$287 Roundtrip, found 3 hours ago
$287
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Aug 30 from Buffalo to Ontario, returning Tue, Sep 2, priced at $287 found 3 hours ago
American Airlines
Tue, Sep 9 - Tue, Sep 16
BUF
Buffalo
ONT
Ontario
$287 Roundtrip, just found
$287
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 9 from Buffalo to Ontario, returning Tue, Sep 16, priced at $287 just found
United
Tue, Sep 30 - Fri, Oct 10
BUF
Buffalo
ONT
Ontario
$288 Roundtrip, found 3 days ago
$288
Roundtrip
found 3 days ago
Select United flight, departing Tue, Sep 30 from Buffalo to Ontario, returning Fri, Oct 10, priced at $288 found 3 days ago
Frontier Airlines
Fri, Aug 29 - Mon, Sep 1
BUF
Buffalo
ONT
Ontario
$288 Roundtrip, just found
$288
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Aug 29 from Buffalo to Ontario, returning Mon, Sep 1, priced at $288 just found
American Airlines
Tue, Sep 16 - Sat, Sep 20
BUF
Buffalo
ONT
Ontario
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Sep 16 from Buffalo to Ontario, returning Sat, Sep 20, priced at $291 found 1 day ago
United
Sat, Oct 11 - Sat, Oct 18
BUF
Buffalo
ONT
Ontario
$292 Roundtrip, found 4 hours ago
$292
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Oct 11 from Buffalo to Ontario, returning Sat, Oct 18, priced at $292 found 4 hours ago
Delta
Tue, Sep 30 - Wed, Oct 8
BUF
Buffalo
ONT
Ontario
$294 Roundtrip, found 3 days ago
$294
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 30 from Buffalo to Ontario, returning Wed, Oct 8, priced at $294 found 3 days ago
Delta
Tue, Sep 16 - Sat, Sep 20
BUF
Buffalo
ONT
Ontario
$296 Roundtrip, found 1 day ago
$296
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep 16 from Buffalo to Ontario, returning Sat, Sep 20, priced at $296 found 1 day ago

Find the cheapest month to fly from Buffalo (BUF) to Ontario (ONT)

August is typically the cheapest month to fly

From $191 - $710 per traveler.

Graph displaying average flight prices per month

Alternative airports near Ontario

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

Select flight to John Wayne SNA. Average driving time to city center is 42 minutes. Flights from $579
SNA
John Wayne
Average driving time to city center42 min
Flights from $579
Flights from Buffalo (BUF) to Ontario (ONT)
Origin airport
Buffalo Niagara Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$278
Distance
2167 mi

Buffalo to Ontario Flights

The cheapest times to fly from Buffalo to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Buffalo to Ontario are during the month of September. You can find some of the cheapest flights from Buffalo to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to Ontario

Sunday is one of the best days to book for cheap flights from Buffalo to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Buffalo to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Buffalo to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $134 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Buffalo to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Buffalo to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Discover the latest flight deals from BUF to ONT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BUF to ONT?
The cheapest flights from BUF to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BUF to ONT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BUF to ONT. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT)?
Direct flights from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BUF to ONT?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on a number of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT)?
Select a flight from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your plane ticket from BUF to ONT shortly before your trip is typically more expensive. But if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a BUF to ONT flight and hotel package?
You'll generally save money by booking a BUF to ONT flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your preferred flights and accommodations, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, you can cancel or reschedule your BUF to ONT flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like further information, head to our Customer Service portal.

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Ontario nearby Airports

Los Angeles

Buffalo to Los Angeles Intl.
$180.38

Long Beach

Buffalo to Long Beach Municipal
$225.35

Burbank

Buffalo to Hollywood Burbank
$250.36

Orange County

Buffalo to John Wayne
$267.97
*Available to One Key members.