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Uncover the best deals on Ontario to San Antonio flights by comparing fares from hundreds of airlines and agencies.
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
$440
Frontier Airlines
• 1 stop
• 18h 31m
Oct 11 – Oct 12
The cheapest round trip flight from Ontario to San Antonio (ONT-SAT-ONT) is currently $440
Cheapest One way Flight
$232
American Airlines
• 1 stop
• 22h 19m
Oct 12
The cheapest one way flight from Ontario to San Antonio (ONT-SAT) is currently $232
Fastest Flight
8h 54m
The fastest nonstop flight from Ontario to San Antonio (ONT-SAT) takes 8h 54m
Top Airlines Flying from Ontario to San Antonio
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.
Oct 11 - Oct 12, Economy
Ontario → San Antonio
18h 31m
6:15 AM - 7:26 PM • 1 stop
Ontario → San Antonio
26h 48m
8:21 PM - 10:29 AM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
8h 54m
11:52 AM - 7:26 PM • 1 stop
Ontario → San Antonio
8h 40m
1:10 PM - 4:30 PM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
22h 20m
8:35 PM - 12:15 PM • 1 stop
Ontario → San Antonio
22h 37m
10:34 PM - 10:31 AM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
10h 6m
1:38 PM - 9:44 PM • 1 stop
Ontario → San Antonio
8h 40m
1:10 PM - 4:30 PM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
13h 34m
6:02 AM - 4:16 PM • 1 stop
Ontario → San Antonio
13h 52m
5:26 PM - 11:58 PM • 1 stop
Alaska Airlines
Explore competitive one-way airfare options for ONT - SAT flights. Best suited for flexible or open-ended travel plans.
Flying to San Antonio soon? We've surfaced some of the most affordable last-minute flights from Ontario to San Antonio, ideal for urgent plans or spontaneous trips.
Oct 11 - Oct 12, Economy
Ontario → San Antonio
18h 31m
6:15 AM - 7:26 PM • 1 stop
Ontario → San Antonio
26h 48m
8:21 PM - 10:29 AM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
8h 54m
11:52 AM - 7:26 PM • 1 stop
Ontario → San Antonio
8h 40m
1:10 PM - 4:30 PM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
22h 20m
8:35 PM - 12:15 PM • 1 stop
Ontario → San Antonio
22h 37m
10:34 PM - 10:31 AM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
10h 6m
1:38 PM - 9:44 PM • 1 stop
Ontario → San Antonio
8h 40m
1:10 PM - 4:30 PM • 1 stop
Frontier Airlines
Oct 11 - Oct 12, Economy
Ontario → San Antonio
13h 34m
6:02 AM - 4:16 PM • 1 stop
Ontario → San Antonio
13h 52m
5:26 PM - 11:58 PM • 1 stop
Alaska Airlines
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?
NO
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 5:20 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 AA : USD 426
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 11:59 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 |
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