Cheap Flight Tickets from Ontario (ONT) to San Antonio (SAT), Starting at $262

Good to Know: Cheapest and Fastest ONT - SAT Flights

Useful information for finding best airline tickets from Ontario International to San Antonio International on your next trip.

Cheapest Round Trip Flight

$433

WN Southwest Airlines • 1 stop • 7h 30m

Jul 21 – Jul 28

The cheapest round trip flight from Ontario to San Antonio (ONT-SAT-ONT) is currently $433

🔍 Search Flights

Cheapest One way Flight

$262

WN Southwest Airlines • 1 stop • 9h

Jul 18

The cheapest one way flight from Ontario to San Antonio (ONT-SAT) is currently $262

🔍 Search Flights

Cheapest Direct Flight

$523

DL Delta Airlines • nonstop • 4h 15m

Jul 21

The cheapest nonstop flight from Ontario to San Antonio (ONT-SAT) is currently $523

🔍 Search Flights

Fastest Flight

4h 15m

The fastest nonstop flight from Ontario to San Antonio (ONT-SAT) takes 4h 15m

Top Airlines Flying from Ontario to San Antonio

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Avianca Airline - AV

Avianca

Alaska Airlines -AS

Alaska Airlines

Aeromexico Airline (AM)

Aeromexico

Latest Flight Deals from Ontario (ONT) to San Antonio (SAT)

Compare and book low fare round-trip air tickets from Ontario to San Antonio. Ideal for travelers with confirmed return itineraries.

Jul 21 - Jul 28, Economy
WN
Ontario → San Antonio
7h 30m
10:25 AM - 5:15 PM • 1 stop
F9
Ontario → San Antonio
10h 11m
7:39 PM - 11:50 PM • 1 stop
$433
Southwest Airlines
Jul 21 - Jul 28, Economy
F9
Ontario → San Antonio
7h 39m
1:38 PM - 8:37 PM • 1 stop
DL
Ontario → San Antonio
5h 5m
4:46 PM - 5:51 PM • nonstop
$462
Frontier Airlines
Jul 21 - Jul 28, Economy
AA
Ontario → San Antonio
10h 49m
2:15 PM - 11:04 PM • 1 stop
AA
Ontario → San Antonio
7h 12m
3:46 PM - 6:18 PM • 1 stop
$843
American Airlines
Jul 21 - Jul 28, Economy
WN
Ontario → San Antonio
10h 30m
2:50 PM - 11:20 PM • 1 stop
WN
Ontario → San Antonio
7h 10m
6:45 AM - 9:15 AM • 1 stop
$843
Southwest Airlines
Jul 21 - Jul 28, Economy
WN
Ontario → San Antonio
13h 25m
10:10 AM - 8:15 PM • 1 stop
WN
Ontario → San Antonio
7h 10m
6:45 AM - 9:15 AM • 1 stop
$849
Southwest Airlines
Jul 21 - Jul 28, Economy
B6
Ontario → San Antonio
52h 4m
11:51 PM - 9:15 AM • 2 stops
F9
Ontario → San Antonio
20h 31m
9:32 PM - 8:03 AM • 1 stop
$992
JetBlue Airways

Fly from Ontario to San Antonio with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Ontario to San Antonio? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Ontario to San Antonio Flights

What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to SAT?
The most popular airline flying from Ontario to San Antonio are
Can I fly from ONT to SAT non-stop?
Yes, you can fly ONT to SAT non-stop on
Which airlines fly nonstop between Ontario and San Antonio?
The non-stop flights between Ontario and San Antonio are .
What’s the earliest departure time from ONT to SAT Airport?
The earliest flight leaves ONT at 6:00 am and lands in SAT - San Antonio International
What are the airports in San Antonio?
SAT
Can I make changes to my Ontario to San Antonio flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to SAT?
Read the fare rules of the Ontario to San Antonio air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and San Antonio?
operate flights between Ontario and San Antonio
How long does a flight from Ontario to San Antonio take?
It takes approximately 3 hour to fly non-stop from ONT to SAT, which is 1166.09 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to San Antonio (SAT) ?
In the past couple of days, the cheapest tickets to SAT from ONT were found on WN : USD 287
Do I need a passport to fly between ONT and SAT?
No
What’s the latest departure time from ONT to SAT ?
The last flight leaves ONT at 6:5900 pm

Ontario (ONT) to San Antonio (SAT): Airport Information

Origin Airport Ontario International , Ontario, US
Destination Airport San Antonio International , San Antonio, US
Distance 1166 miles

More Flight Options for Ontario (ONT) and San Antonio (SAT)

Why Fareleaders for ONT to SAT Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Ontario to San Antonio flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on ONT to SAT flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Ontario to San Antonio flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the Ontario (ONT) to San Antonio (SAT)
Terms and Conditions*