Cheap flights from Ontario to San Antonio (ONT - SAT)

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The best prices from Ontario to San Antonio are usually found in September or October, booked 42 days in advance, depart on a Wednesday or Thursday and return on a Monday

How to find the cheapest flight from
Ontario (ONT) to San Antonio (SAT)

All the information you need to plan the best ONT to SAT flight in 2022: compare Ontario to San Antonio flight prices with the expected peak season, weather and rainfall in San Antonio.
ONT - SAT
Price
$150 - $318
SAT
Temperature
51.8 - 84.2 °F
SAT
Rainfall
1.6 - 3.7 inches

Popular in

December

High demand for flights, 24% potential price rise

Cheapest in

September

Best time to find cheap flights, 38% potential price drop

Average price

$268

Average for round-trip flights in May 2022

Round-trip from

$150

From Ontario to San Antonio

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Ontario to San Antonio?

Sunday flights are found to be more expensive to fly from Ontario to San Antonio. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Antonio.

When is the cheapest time to fly from Ontario to San Antonio (ONT - SAT)?

It’s typically best to fly out from Ontario to San Antonio in the evening. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.

How far in advance should I book a flight from Ontario to San Antonio?

Users have found that booking a flight from Ontario to San Antonio at least 32 days early can save you up to 30% on average compared to booking a flight this week. If booking 32 days before your flight isn’t an option for you, users have found flights from Ontario to San Antonio for as little as $308 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $352 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to San Antonio?

Flights from Ontario to San Antonio lean towards being more expensive in March. Prices are generally better when you fly from Ontario to San Antonio in August, with the cheapest ticket starting at $137.

Cheap flights from Ontario to San Antonio in May, June 2022

The best prices found for ONT to SAT flights for May, June
9 Jun - 14 Jun
$200pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario
2 Jun - 14 Jun
$219pp
ONT
Ontario
Multiple Airlines
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario
9 Jun - 14 Jun
$223pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario

Ontario to San Antonio 2022 flight deals

Cheap flights to San Antonio from Ontario found for this year
9 Jun - 14 Jun
$200pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario
2 Jun - 14 Jun
$219pp
ONT
Ontario
Multiple Airlines
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario
9 Jun - 14 Jun
$223pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario

Last minute flights from Ontario to San Antonio

Late deals on round-trip flights to San Antonio from Ontario, departing today and this week
26 May - 2 Jun
$286pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario
26 May - 29 May
$309pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario
28 May - 30 May
$316pp
ONT
Ontario
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
ONT
Ontario

One-way flights to San Antonio from Ontario

The cheapest one-way flights from Ontario to San Antonio
7:35 pm - 4:48 am
United Airlines
1 Stop
7h 13m
ONT - SAT
United Airlines
$219
United
8:38 pm - 5:49 am
Frontier
1 Stop
7h 11m
ONT - SAT
Frontier
$231
Kiwi.com
5:54 pm - 4:25 pm
Multiple Airlines
2 Stops
20h 31m
ONT - SAT
Multiple Airlines
$232
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Ontario</span> to <span class="emphasized">San Antonio</span> flights.

Flight FAQs

From Ontario to San Antonio

Which airlines flying from Ontario to San Antonio have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, United Airlines, and Frontier flying from Ontario to San Antonio have implemented new flexible cancellation policies.

Can I find flights from Ontario to San Antonio for under $200 on Cheapflights?

Yes, there are multiple flights from Ontario to San Antonio for under $200. The cheapest flight booked recently is on Frontier for just $200, but on average you can expect to pay $251.

Are there last-minute flights available from Ontario to San Antonio for under $300?

There are currently 20+ open flights from Ontario to San Antonio within the next 7 days for less than $300.

How popular is this Ontario to San Antonio flight route?

Within the past month, 44 users have taken a look at flights from Ontario to San Antonio.

What are the cheapest airlines flying from Ontario to San Antonio round-trip?

According to our current data, Frontier ($200), and United Airlines ($296) offers the cheapest pricing from Ontario to San Antonio. Frontier is 16% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Ontario to San Antonio one-way?

The cheapest airlines for a one-way flight from Ontario to San Antonio are Frontier ($129), United Airlines ($148), and Delta ($163).

What are the most popular airlines that fly from Ontario to San Antonio?

When booking a flight from Ontario to San Antonio, you may want to consider flying on Major Airline, American Airlines or Alaska Airlines as they are the most popular for this route.

What are the cheapest flights from Ontario to San Antonio?

Looking at all options, your cheapest flight can be booked for $110. While the most popular route (Ontario - San Antonio) can be booked for $216 on average our data indicates $614 when flying from Ontario to San Antonio.

COVID Restrictions

View COVID Travel Restrictions for San Antonio, TX

Do I need a COVID test to fly to San Antonio from Ontario?

Information is based on travel restrictions for travel to San Antonio within the United States

Most visitors from Ontario need to provide a negative COVID-19 test result and/or quarantine to enter San Antonio.

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to San Antonio.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering San Antonio.

Do I need a test to fly back to Ontario from San Antonio?

Returning to Ontario from San Antonio

COVID-19 testing requirements
Visitors from San Antonio must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Ontario.

Quarantine requirements
Visitors from San Antonio are not required to quarantine after entering Ontario.

Hide COVID Travel Restrictions for San Antonio, TX

Alternative routes for Ontario to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Antonio

Things to know before you go - useful duration and weather info for your trip from Ontario to San Antonio.

Airports servicing Ontario

Airports servicing San Antonio

Top 4 airlines flying from Ontario to San Antonio

The chart below displays the airlines Cheapflights users traveling from Ontario to San Antonio choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$80 $207 No cancel fee 62%
Delta
$177 $301 No cancel fee N/A
United Airlines
$223 $326 No cancel fee 69%
American Airlines
$254 $377 No cancel fee 71%

Hourly flight availability from Ontario to San Antonio

See what time of day planes typically take off from Ontario towards San Antonio.
Early morning Midnight to 6 AM 100% of ONT to SAT departures
Morning 6 AM to noon 0% of ONT to SAT departures
Afternoon Noon to 6 PM 0% of ONT to SAT departures
Evening 6 PM to midnight 0% of ONT to SAT departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Ontario to San Antonio
See how many times per day planes take to the skies headed from Ontario to San Antonio.
Sunday
1 daily flight
Monday
1 daily flight
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
1 daily flight
Friday
1 daily flight
Saturday
0 flights
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