$159 Cheap Flights from White Plains (HPN) to Ontario (ONT)

View $159 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from White Plains to Ontario (HPN-ONT)

Prices were available within the past 7 days and start at $159 for one-way flights and $317 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Nov 15 - Sat, Dec 6
HPN
White Plains
ONT
Ontario
$317 Roundtrip, found 21 hours ago
$317
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, Nov 15 from White Plains to Ontario, returning Sat, Dec 6, priced at $317 found 21 hours ago
Delta
Tue, Nov 4 - Wed, Nov 12
HPN
White Plains
ONT
Ontario
$320 Roundtrip, found 21 hours ago
$320
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Nov 4 from White Plains to Ontario, returning Wed, Nov 12, priced at $320 found 21 hours ago
Delta
Tue, Nov 11 - Tue, Nov 18
HPN
White Plains
ONT
Ontario
$322 Roundtrip, just found
$322
Roundtrip
just found
Select Delta flight, departing Tue, Nov 11 from White Plains to Ontario, returning Tue, Nov 18, priced at $322 just found
Delta
Tue, Nov 4 - Sat, Nov 15
HPN
White Plains
ONT
Ontario
$325 Roundtrip, found 21 hours ago
$325
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Nov 4 from White Plains to Ontario, returning Sat, Nov 15, priced at $325 found 21 hours ago
Delta
Mon, Nov 10 - Mon, Nov 17
HPN
White Plains
ONT
Ontario
$327 Roundtrip, found 23 hours ago
$327
Roundtrip
found 23 hours ago
Select Delta flight, departing Mon, Nov 10 from White Plains to Ontario, returning Mon, Nov 17, priced at $327 found 23 hours ago
Delta
Tue, Nov 4 - Fri, Nov 7
HPN
White Plains
ONT
Ontario
$328 Roundtrip, found 21 hours ago
$328
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Nov 4 from White Plains to Ontario, returning Fri, Nov 7, priced at $328 found 21 hours ago
Delta
Tue, Nov 11 - Tue, Nov 18
HPN
White Plains
ONT
Ontario
$330 Roundtrip, just found
$330
Roundtrip
just found
Select Delta flight, departing Tue, Nov 11 from White Plains to Ontario, returning Tue, Nov 18, priced at $330 just found
American Airlines
Wed, Nov 5 - Tue, Nov 11
HPN
White Plains
ONT
Ontario
$332 Roundtrip, found 4 days ago
$332
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Nov 5 from White Plains to Ontario, returning Tue, Nov 11, priced at $332 found 4 days ago
Alaska Airlines
Mon, Nov 10 - Mon, Nov 17
HPN
White Plains
ONT
Ontario
$1,069 Roundtrip, found 23 hours ago
$1,069
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Mon, Nov 10 from White Plains to Ontario, returning Mon, Nov 17, priced at $1,069 found 23 hours ago
JetBlue Airways
Mon, Jul 13 - Mon, Jul 20
HPN
White Plains
ONT
Ontario
$1,406 Roundtrip, found 21 hours ago
$1,406
Roundtrip
found 21 hours ago
Select JetBlue Airways flight, departing Mon, Jul 13 from White Plains to Ontario, returning Mon, Jul 20, priced at $1,406 found 21 hours ago

Find the cheapest month to fly from White Plains (HPN) to Ontario (ONT)

November is typically the cheapest month to fly

From $287 - $2,272 per traveler.

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 $469
SNA
John Wayne
Average driving time to city center42 min
Flights from $469

Frequently asked questions

How much does a flight from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $159 or cheap return flight from $317 from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT)?
Flying in November is a great way to save, as it's the cheapest month for flights between HPN and ONT. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest HPN to ONT flight.
How many flights per day from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT)?
Nonstop flights from Westchester County Airport (HPN) 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 filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from HPN to ONT?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, 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 Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid potential delays on the Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT) route, aim to fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**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 Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your flight from HPN to ONT just before your journey is usually more expensive. However, if there's some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a HPN to ONT flight and hotel package?
Compared with arranging flights and hotels separately, booking a HPN to ONT flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the stress out of travel planning. Just secure your flights and choose from our extensive range of stays, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Westchester County Airport (HPN) to Los Angeles - Ontario Intl. Airport (ONT)?
If you reserved your HPN to 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, go to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Westchester County
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways
Roundtrip price
$316
Distance
2425 mi

Book with confidence

White Plains to Ontario Flights

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

 

The best time to book a flight from White Plains to Ontario

Sunday is one of the best days to book for cheap flights from White Plains 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 White Plains 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 White Plains to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $159 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 White Plains 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 White Plains 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.

 

White Plains to Ontario Flights

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*Available to One Key members.