$68 Cheap Flights from New York (LGA) to Ontario (ONT)

View $68 flight on Sat, Dec 6, 2025Opens in a new window

Popular airlines from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from New York to Ontario (LGA-ONT)

Prices were available within the past 7 days and start at $68 for one-way flights and $143 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Jan 17 - Thu, Jan 22
LGA
New York
ONT
Ontario
$143 Roundtrip, found 1 hour ago
$143
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Jan 17 from New York to Ontario, returning Thu, Jan 22, priced at $143 found 1 hour ago
Southwest Airlines
Thu, Jan 8 - Thu, Jan 15
LGA
New York
ONT
Ontario
$150 Roundtrip, found 3 hours ago
$150
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Thu, Jan 8 from New York to Ontario, returning Thu, Jan 15, priced at $150 found 3 hours ago
Southwest Airlines
Fri, Dec 5 - Tue, Dec 9
LGA
New York
ONT
Ontario
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Dec 5 from New York to Ontario, returning Tue, Dec 9, priced at $157 just found
Southwest Airlines
Sat, Jan 17 - Thu, Jan 22
LGA
New York
ONT
Ontario
$162 Roundtrip, found 1 hour ago
$162
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Jan 17 from New York to Ontario, returning Thu, Jan 22, priced at $162 found 1 hour ago
Southwest Airlines
Tue, Dec 9 - Sat, Dec 13
LGA
New York
ONT
Ontario
$164 Roundtrip, just found
$164
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Dec 9 from New York to Ontario, returning Sat, Dec 13, priced at $164 just found
Southwest Airlines
Wed, Jan 21 - Sun, Jan 25
LGA
New York
ONT
Ontario
$166 Roundtrip, just found
$166
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Jan 21 from New York to Ontario, returning Sun, Jan 25, priced at $166 just found
American Airlines
Sat, Dec 6 - Wed, Dec 10
LGA
New York
ONT
Ontario
$170 Roundtrip, found 2 hours ago
$170
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Dec 6 from New York to Ontario, returning Wed, Dec 10, priced at $170 found 2 hours ago
Frontier Airlines
Sat, Nov 8 - Tue, Nov 11
LGA
New York
ONT
Ontario
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Nov 8 from New York to Ontario, returning Tue, Nov 11, priced at $180 found 1 hour ago
United
Mon, Nov 10 - Sat, Nov 15
LGA
New York
ONT
Ontario
$247 Roundtrip, found 20 hours ago
$247
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Nov 10 from New York to Ontario, returning Sat, Nov 15, priced at $247 found 20 hours ago
Delta
Wed, Jan 21 - Sun, Jan 25
LGA
New York
ONT
Ontario
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Delta flight, departing Wed, Jan 21 from New York to Ontario, returning Sun, Jan 25, priced at $257 just found

Find the cheapest month to fly from New York (LGA) to Ontario (ONT)

October is typically the cheapest month to fly

From $158 - $515 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 $375
SNA
John Wayne
Average driving time to city center42 min
Flights from $375

Frequently asked questions

How much does a flight from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $68 or cheap return flight from $143 from LaGuardia Airport (LGA) 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 offers on this route.
What is the cheapest month to fly from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT)?
January is the most affordable month to fly from LGA to ONT. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LGA to ONT flight.
How many flights per day from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll have to take a flight with a layover when traveling from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from LGA to ONT?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on various factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid potential delays on the LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT) route, travel before 3 PM. Later flights 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 LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your ticket from LGA to ONT just before your journey is usually more expensive. However, if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a LGA to ONT flight and hotel package?
You'll typically save money by booking a LGA to ONT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your ideal flights and accommodations, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from LaGuardia Airport (LGA) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, you can cancel or reschedule your LGA to ONT flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like more information, head to our Customer Service portal.

Travel information

Origin airport
LaGuardia
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$143
Distance
2417 mi

Book with confidence

New York to Ontario Flights

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

 

The best time to book a flight from New York to Ontario

Sunday is one of the best days to book for cheap flights from New York 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 New York 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 New York to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $68 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 New York 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 New York 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.

 

New York to Ontario Flights

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*Available to One Key members.