$384 Cheap Flights from Plattsburgh (PBG) to Ontario (ONT)

View $384 flight on Thu, Sep 11, 2025Opens in a new window

Popular airlines from Plattsburgh, NY (PBG-Plattsburgh Intl.) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Plattsburgh to Ontario (PBG-ONT)

Prices were available within the past 7 days and start at $384 for one-way flights and $536 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Contour Airlines
Sat, Sep 6 - Wed, Sep 17
PBG
Plattsburgh
ONT
Ontario
$536 Roundtrip, found 5 days ago
$536
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Sat, Sep 6 from Plattsburgh to Ontario, returning Wed, Sep 17, priced at $536 found 5 days ago
Contour Airlines
Sat, Sep 6 - Thu, Sep 18
PBG
Plattsburgh
ONT
Ontario
$546 Roundtrip, found 5 days ago
$546
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Sat, Sep 6 from Plattsburgh to Ontario, returning Thu, Sep 18, priced at $546 found 5 days ago
Contour Airlines
Sat, Sep 6 - Fri, Sep 19
PBG
Plattsburgh
ONT
Ontario
$551 Roundtrip, found 5 days ago
$551
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Sat, Sep 6 from Plattsburgh to Ontario, returning Fri, Sep 19, priced at $551 found 5 days ago
Contour Airlines
Sat, Sep 6 - Tue, Sep 16
PBG
Plattsburgh
ONT
Ontario
$555 Roundtrip, found 5 days ago
$555
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Sat, Sep 6 from Plattsburgh to Ontario, returning Tue, Sep 16, priced at $555 found 5 days ago
Contour Airlines
Tue, Sep 9 - Wed, Sep 17
PBG
Plattsburgh
ONT
Ontario
$615 Roundtrip, found 5 days ago
$615
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Tue, Sep 9 from Plattsburgh to Ontario, returning Wed, Sep 17, priced at $615 found 5 days ago
Contour Airlines
Wed, Sep 10 - Wed, Sep 17
PBG
Plattsburgh
ONT
Ontario
$615 Roundtrip, found 5 days ago
$615
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Wed, Sep 10 from Plattsburgh to Ontario, returning Wed, Sep 17, priced at $615 found 5 days ago
Contour Airlines
Tue, Sep 9 - Thu, Sep 18
PBG
Plattsburgh
ONT
Ontario
$625 Roundtrip, found 5 days ago
$625
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Tue, Sep 9 from Plattsburgh to Ontario, returning Thu, Sep 18, priced at $625 found 5 days ago
Contour Airlines
Thu, Sep 11 - Wed, Sep 17
PBG
Plattsburgh
ONT
Ontario
$626 Roundtrip, found 5 days ago
$626
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Thu, Sep 11 from Plattsburgh to Ontario, returning Wed, Sep 17, priced at $626 found 5 days ago
Contour Airlines
Tue, Sep 9 - Fri, Sep 19
PBG
Plattsburgh
ONT
Ontario
$630 Roundtrip, found 5 days ago
$630
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Tue, Sep 9 from Plattsburgh to Ontario, returning Fri, Sep 19, priced at $630 found 5 days ago
Contour Airlines
Tue, Sep 9 - Tue, Sep 16
PBG
Plattsburgh
ONT
Ontario
$634 Roundtrip, found 5 days ago
$634
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Tue, Sep 9 from Plattsburgh to Ontario, returning Tue, Sep 16, priced at $634 found 5 days ago
Flights from Plattsburgh (PBG) to Ontario (ONT)
Origin airport
Plattsburgh Intl.
Destination airport
Los Angeles - Ontario Intl.
Roundtrip price
$536
Distance
2435 mi

Plattsburgh to Ontario Flights

The cheapest times to fly from Plattsburgh 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 Plattsburgh to Ontario are during the month of September. You can find some of the cheapest flights from Plattsburgh to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Plattsburgh to Ontario

Sunday is one of the best days to book for cheap flights from Plattsburgh 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 Plattsburgh 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 Plattsburgh to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $384 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 Plattsburgh 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 Plattsburgh 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 Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Snag a cheap one-way flight from $384 or cheap return flight from $536 from Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT)?
The cheapest month to fly from PBG to ONT is September, when there's less demand. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT)?
To find the cheapest airline flying from PBG to ONT, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT)?
Direct flights from Plattsburgh Intl. Airport (PBG) 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 Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PBG to ONT?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid possible delays on the Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT) route, fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Holding off until right before your break to book a flight from PBG to ONT generally means paying more. While you may come across some last-minute deals, there's no guarantee. Be flexible with your travel plans to boost your chances of scoring a bargain.
Is it cheaper to book a PBG to ONT flight and hotel package?
Opting for a PBG to ONT flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Plattsburgh Intl. Airport (PBG) to Los Angeles - Ontario Intl. Airport (ONT)?
If you booked your PBG to ONT flight within the last 24 hours, you may be able to cancel or modify it without 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, visit our Customer Service portal for further details.

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*Available to One Key members.