$49 Cheap Flights from San Jose (SJC) to Ontario (ONT)

View $49 flight on Thu, Oct 9, 2025Opens in a new window

Popular airlines from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from San Jose to Ontario (SJC-ONT)

Prices were available within the past 7 days and start at $49 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Oct 9 - Mon, Oct 13
SJC
San Jose
ONT
Ontario
$97 Roundtrip, found 3 hours ago
$97
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Thu, Oct 9 from San Jose to Ontario, returning Mon, Oct 13, priced at $97 found 3 hours ago
Southwest Airlines
Wed, Aug 13 - Mon, Aug 18
SJC
San Jose
ONT
Ontario
$107 Roundtrip, just found
$107
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Aug 13 from San Jose to Ontario, returning Mon, Aug 18, priced at $107 just found
Southwest Airlines
Wed, Sep 10 - Sat, Sep 13
SJC
San Jose
ONT
Ontario
$111 Roundtrip, found 1 day ago
$111
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Sep 10 from San Jose to Ontario, returning Sat, Sep 13, priced at $111 found 1 day ago
Southwest Airlines
Wed, Sep 3 - Mon, Sep 8
SJC
San Jose
ONT
Ontario
$112 Roundtrip, found 4 hours ago
$112
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Wed, Sep 3 from San Jose to Ontario, returning Mon, Sep 8, priced at $112 found 4 hours ago
Southwest Airlines
Sat, Oct 4 - Tue, Oct 7
SJC
San Jose
ONT
Ontario
$116 Roundtrip, found 4 days ago
$116
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Sat, Oct 4 from San Jose to Ontario, returning Tue, Oct 7, priced at $116 found 4 days ago
Southwest Airlines
Wed, Sep 3 - Sat, Sep 6
SJC
San Jose
ONT
Ontario
$117 Roundtrip, found 1 hour ago
$117
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Wed, Sep 3 from San Jose to Ontario, returning Sat, Sep 6, priced at $117 found 1 hour ago
American Airlines
Sat, Oct 4 - Mon, Oct 6
SJC
San Jose
ONT
Ontario
$128 Roundtrip, found 1 day ago
$128
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Oct 4 from San Jose to Ontario, returning Mon, Oct 6, priced at $128 found 1 day ago
Frontier Airlines
Mon, Aug 4 - Sat, Aug 9
SJC
San Jose
ONT
Ontario
$130 Roundtrip, found 1 day ago
$130
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Aug 4 from San Jose to Ontario, returning Sat, Aug 9, priced at $130 found 1 day ago
Hawaiian Airlines
Tue, Sep 9 - Wed, Oct 1
SJC
San Jose
ONT
Ontario
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Sep 9 from San Jose to Ontario, returning Wed, Oct 1, priced at $258 found 1 day ago
Delta
Tue, Oct 14 - Tue, Oct 21
SJC
San Jose
ONT
Ontario
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 14 from San Jose to Ontario, returning Tue, Oct 21, priced at $259 found 2 days ago

Find the cheapest month to fly from San Jose (SJC) to Ontario (ONT)

August is typically the cheapest month to fly

From $97 - $328 per traveler.

Graph displaying average flight prices per month

Flights from San Jose (SJC) to Ontario (ONT)
Origin airport
Norman Y. Mineta San Jose Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$97
Distance
333 mi
Average flight time
1 hour 17 mins

San Jose to Ontario Flights

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

 

The best time to book a flight from San Jose to Ontario

Sunday is one of the best days to book for cheap flights from San Jose 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 San Jose 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 San Jose to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $49 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 San Jose 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 San Jose 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 Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Find cheap return tickets from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT) starting from $86. Snag a seat and get ready to go. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving SJC on August 7 2025 and touching down at ONT. The price was last updated on July 11 2025 and has not changed since.
What is the cheapest month to fly from SJC to ONT?
The cheapest flights from SJC 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.
Which airlines fly direct from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
Jump on a nonstop flight with Southwest Airlines and fly straight from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT).
What is the cheapest airline that flies from SJC to ONT?
Book a flight from SJC to ONT with Southwest Airlines. This carrier currently offers the cheapest one-way ticket on this route, starting at $49. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SJC on August 21 2025. Prices were last updated on July 11 2025 and have not changed since.
How many flights per day from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
Each day on average, 3 direct flights operate from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT). Select the departure date that fits your schedule best.
What are the most popular departure times for flights from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
More travelers fly between SJC and ONT at 2 PM than at any other time. Rather go when it's quieter? Consider flying outside peak hours and you're likely to save on your ticket as well.
What day of the week has the most flights from SJC to ONT?
Depart on a Friday if you're looking for the biggest selection of flights from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT).
What is the earliest flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
The first flight of the day taking off from Norman Y. Mineta San Jose Intl. Airport (SJC) is at around 7:45AM UTC-8. Hop on this flight and you'll arrive at Los Angeles - Ontario Intl. Airport (ONT) at approximately 9:05AM UTC-8. The total flight duration is 1h 20m.
How long does it take to fly from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
It takes around 1 hour and 17 minutes to cover the 330 mi from SJC to ONT.
What airline has the least delays from SJC to ONT?
With 88% of journeys typically arriving on schedule, Southwest Airlines has the best on-time performance for nonstop flights from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT). To monitor your flight status and receive notifications if anything changes, use the Expedia App.
What is the best time to fly from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid possible delays on the Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT) route, aim to travel before 3 PM. Departures after this hour 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.
What airports do you fly into for Ontario from Norman Y. Mineta San Jose Intl. Airport (SJC)?
A direct flight from Norman Y. Mineta San Jose Intl. Airport (SJC) will fly you straight to one of these hubs in Ontario:

  • Los Angeles Intl. Airport (LAX)
  • John Wayne Airport (SNA)
  • Bob Hope Airport (BUR)
  • Los Angeles - Ontario Intl. Airport (ONT)
  • Long Beach Municipal Airport (LGB)

Is it cheaper to buy a plane ticket from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your ticket from SJC to ONT shortly before your journey is typically more expensive. But if you're flexible with your travel dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a SJC to ONT flight and hotel package?
Compared with arranging flights and hotels separately, booking a SJC to ONT flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place will take the stress out of travel planning. Simply secure your flights and select from our wide range of stays, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to Los Angeles - Ontario Intl. Airport (ONT)?
In most cases, you can reschedule or cancel your SJC to ONT flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want further information, visit our Customer Service portal.

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*Available to One Key members.