$70 Cheap Flights from Jacksonville (JAX) to Ontario (ONT)

View $70 flight on Thu, Dec 11, 2025Opens in a new window

Popular airlines from Jacksonville International Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Jacksonville to Ontario (JAX-ONT)

Prices were available within the past 7 days and start at $70 for one-way flights and $160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Dec 4 - Thu, Dec 11
JAX
Jacksonville
ONT
Ontario
$160 Roundtrip, found 7 hours ago
$160
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Jacksonville to Ontario, returning Thu, Dec 11, priced at $160 found 7 hours ago
Southwest Airlines
Wed, Jan 21 - Tue, Jan 27
JAX
Jacksonville
ONT
Ontario
$240 Roundtrip, found 5 days ago
$240
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Wed, Jan 21 from Jacksonville to Ontario, returning Tue, Jan 27, priced at $240 found 5 days ago
Frontier Airlines
Thu, Dec 11 - Mon, Dec 15
JAX
Jacksonville
ONT
Ontario
$246 Roundtrip, found 8 hours ago
$246
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Jacksonville to Ontario, returning Mon, Dec 15, priced at $246 found 8 hours ago
Frontier Airlines
Thu, Dec 4 - Tue, Jan 6
JAX
Jacksonville
ONT
Ontario
$257 Roundtrip, found 3 days ago
$257
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Jacksonville to Ontario, returning Tue, Jan 6, priced at $257 found 3 days ago
Delta
Wed, Dec 3 - Wed, Dec 10
JAX
Jacksonville
ONT
Ontario
$261 Roundtrip, found 4 days ago
$261
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Dec 3 from Jacksonville to Ontario, returning Wed, Dec 10, priced at $261 found 4 days ago
Frontier Airlines
Mon, Nov 24 - Thu, Dec 4
JAX
Jacksonville
ONT
Ontario
$267 Roundtrip, found 2 days ago
$267
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Nov 24 from Jacksonville to Ontario, returning Thu, Dec 4, priced at $267 found 2 days ago
Delta
Wed, Dec 3 - Thu, Dec 11
JAX
Jacksonville
ONT
Ontario
$271 Roundtrip, found 11 hours ago
$271
Roundtrip
found 11 hours ago
Select Delta flight, departing Wed, Dec 3 from Jacksonville to Ontario, returning Thu, Dec 11, priced at $271 found 11 hours ago
Frontier Airlines
Wed, Nov 26 - Thu, Dec 4
JAX
Jacksonville
ONT
Ontario
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Nov 26 from Jacksonville to Ontario, returning Thu, Dec 4, priced at $279 found 2 days ago
United
Wed, Jan 14 - Tue, Jan 20
JAX
Jacksonville
ONT
Ontario
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 14 from Jacksonville to Ontario, returning Tue, Jan 20, priced at $281 found 2 days ago
American Airlines
Thu, Feb 19 - Sat, Feb 21
JAX
Jacksonville
ONT
Ontario
$299 Roundtrip, found 7 hours ago
$299
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, Feb 19 from Jacksonville to Ontario, returning Sat, Feb 21, priced at $299 found 7 hours ago

Find the cheapest month to fly from Jacksonville (JAX) to Ontario (ONT)

August is typically the cheapest month to fly

From $228 - $822 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 $537
SNA
John Wayne
Average driving time to city center42 min
Flights from $537

Frequently asked questions

How much does a flight from Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Secure a cheap one-way flight from $70 or cheap return flight from $160 from Jacksonville Intl. Airport (JAX) 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 Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT)?
The cheapest month to fly from JAX to ONT is December, when there's less demand. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest JAX to ONT flight.
How many flights per day from Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT)?
Nonstop flights from Jacksonville Intl. Airport (JAX) 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 travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from JAX to ONT?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a number of factors, including 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 Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid possible delays on the Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT) route, fly before 3 PM. Departures 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 Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Waiting until just before your trip to book a flight from JAX to ONT generally means paying more. While you may come across some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans for the best chance of getting a bargain.
Is it cheaper to book a JAX to ONT flight and hotel package?
Compared with arranging hotels and flights separately, booking a JAX 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 planning your trip. Just secure your flights and choose from our wide range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Jacksonville Intl. Airport (JAX) to Los Angeles - Ontario Intl. Airport (ONT)?
If you reserved your JAX 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 purchased, 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 for further details.

Travel information

Origin airport
Jacksonville Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$160
Distance
2101 mi

Book with confidence

Jacksonville to Ontario Flights

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

 

The best time to book a flight from Jacksonville to Ontario

Sunday is one of the best days to book for cheap flights from Jacksonville 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 Jacksonville 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 Jacksonville to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $70 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 Jacksonville 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 Jacksonville 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.

 

Jacksonville to Ontario Flights

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*Available to One Key members.