$150 Cheap Delta flights Ontario (ONT) to San Antonio (SAT)

View $150 flight on Tue, Sep 23, 2025Opens in a new window

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$150 Cheap Delta flights Ontario (ONT) to San Antonio (SAT)

Prices were available within the past 7 days and start at $150 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 23 - Tue, Sep 30
ONT
Ontario
SAT
San Antonio
$299 Roundtrip, found 1 hour ago
$299
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Sep 23 from Ontario to San Antonio, returning Tue, Sep 30, priced at $299 found 1 hour ago
Flights from Ontario (ONT) to San Antonio (SAT)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Antonio Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
American Airlines
Distance
1163 mi

Frequently asked questions

How much is a Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to San Antonio Intl. Airport (SAT)?
You can discover affordable return Delta Air Lines flights from $299 from ONT to SAT by organizing your results from "Price (lowest to highest)" on Expedia. Or search for options from $150 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ONT to SAT with Delta Air Lines?
January is one of the most affordable months to fly to San Antonio with Delta Air Lines. You could also find excellent prices on one-way and round-trip fares in September.
What is the cheapest time to book flights from Los Angeles - Ontario Intl. Airport (ONT) to San Antonio Intl. Airport (SAT) with Delta Air Lines?
Start searching one to three months ahead of your travel date to find cheaper fares on Delta Air Lines flights from Los Angeles - Ontario Intl. Airport (ONT) to San Antonio Intl. Airport (SAT). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Los Angeles - Ontario Intl. Airport (ONT) to San Antonio Intl. Airport (SAT)?
Enter your dates, press search and check "Nonstop" on Expedia to find any direct flights from ONT to SAT with Delta Air Lines or another airline.
What is the earliest Delta Air Lines flight from ONT to SAT?
To find the earliest departures from ONT to SAT with Delta Air Lines, sort your results by "Early Morning" and "Morning." Booking an early flight usually means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in San Antonio?
San Antonio Intl. Airport (SAT) is the primary San Antonio hub for Delta Air Lines flights from Los Angeles - Ontario Intl. Airport (ONT).
Why fly with Delta Air Lines from ONT to SAT?
Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a popular option for many travelers heading from ONT to SAT. What's more, if you're a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to San Antonio Intl. Airport (SAT)?
Depending on the ticket type you purchased, a fee will generally apply if you modify or cancel your booking more than 24 hours after confirmation. To find flexible plane tickets, select our "No cancel fee" or "Changes included" filter when you look for flights. For more information on modifying or canceling your reservation, head to "Trips," select your flight and tick "Manage Booking."

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*Available to One Key members.