Cheap Flights from San Antonio (SAT) to Ontario Intl. Airport (ONT)

View AU$613 flight on Sat, 23 May 2026Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from San Antonio (SAT) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What is the cheapest month to fly from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
February is typically the cheapest month to fly from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), with average round-trip fares of approximately 852 CAD. This is about 15% lower than the average price throughout the year. February often sees lower prices as it falls outside of peak holiday travel seasons, leading to reduced demand. Other cheap months to fly from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) include August and September.*Averages based on flights available on Expedia in the last year.
How do I find cheap flights from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
To find a cheap flight from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The best time to fly from San Antonio International Airport (SAT) to Los Angeles - Ontario International Airport (ONT) is typically February or August. Based on booking data from the past year, these months offer the lowest average prices, around 852 CAD for a round-trip flight. While these might not be the absolute busiest travel times, you'll still find plenty of flight options, giving you a good balance of value and convenience for your trip.*Prices based on flights available on Expedia in the last year.
How many flights per day from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
There are approximately 67 connecting flights per day from San Antonio Intl. (SAT) to Los Angeles - Ontario Intl. (ONT). Some common connection points include Seattle - Tacoma Intl. (SEA), Dallas-Fort Worth Intl. (DFW), and Denver Intl. (DEN).
What is the earliest flight from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The earliest flight from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in April, May, June, July, August, September, and October. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
You'll typically find the most flights from San Antonio Intl. (SAT) to Los Angeles - Ontario Intl. (ONT) on a Monday, with around 54 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, American Airlines, and United Airlines. Flight schedules are consistent throughout the week, with only a slight variation in the number of flights.
What are the most popular departure times for flights from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The most popular departure times for flights from San Antonio Intl. (SAT) to Los Angeles - Ontario Intl. (ONT) are in the early morning, from 6am to 9am. About 29% of passengers prefer this time window. Many major carriers, including Southwest Airlines, American Airlines and United Airlines, offer flights during this window. These times work well because you can get an early start to your travel day and arrive at your destination with plenty of time.
How long does it take to fly from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
A flight from SAT to ONT with a layover takes around 5 hours 50 minutes, with the route covering approximately 1,164 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Select the "Business class" and "First class" filters when looking for SAT to ONT flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight with Expedia?
It's easy to earn miles on a San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Ontario from San Antonio Intl. (SAT)?
From San Antonio Intl. (SAT), you can fly into Los Angeles - Ontario Intl. (ONT) to reach Ontario. Some flights may connect through major hubs like George Bush Intercontinental (IAH), Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN) before reaching Ontario. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) at the last minute?
Typically, booking a last minute flight from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package?
Securing a San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
If you booked your San Antonio, TX (SAT-San Antonio Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) 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, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Antonio Intl.
Destination airport
Ontario Intl. Airport
Distance
1861 km

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Your quick guide to flights from San Antonio to Ontario Intl. Airport

Pick up great flights from San Antonio to Ontario Intl. Airport

With Expedia, you have your pick of flights a day with 20 airlines covering flights from San Antonio to Ontario Intl. Airport. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from San Antonio to Ontario Intl. Airport that take around hours.

Find cheap flights from San Antonio to Ontario Intl. Airport

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from San Antonio to Ontario Intl. Airport around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Ontario Intl. Airport is normally in .

Reasons to book your flight from San Antonio to Ontario Intl. Airport with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from San Antonio to Ontario Intl. Airport across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Ontario Intl. Airport right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from San Antonio to Ontario Intl. Airport

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