What is the cheapest airline to fly from Ontario to San Antonio round-trip?

According to our current data, Frontier ($140), offers the cheapest pricing from Ontario to San Antonio. Frontier is 60% 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 ($70), Delta ($143), and American Airlines ($148).

How recently were the Ontario to San Antonio flight deals updated?

The Ontario to San Antonio flight deals you see on this page were last updated on 5/28.

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 American Airlines, Delta or Frontier as they are the most popular for this route.

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 $140, but on average you can expect to pay $187.

Are there last-minute flights available from Ontario to San Antonio for under $200?

There are currently 20+ open flights from Ontario to San Antonio within the next 7 days for less than $200.

What does ONT to SAT mean?

This is defined as Ontario Airport (ONT) and San Antonio Airport (SAT). Codes like San Antonio Airport are often used to just call airports uniquely.

Can I find deals for flights from Ontario to San Antonio that include extra baggage allowance?

The amount of baggage you can bring on your Ontario to San Antonio flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Can I find deals on flights from Ontario to San Antonio with specific airlines?

Yes, Cheapflights allows you to browse and filter Ontario to San Antonio flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Can I find deals for flights from Ontario to San Antonio that include hotel bookings?

Yes. In addition to deals on Ontario to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to San Antonio?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Antonio.

Can I find deals for business class flights from Ontario to San Antonio?

Yes. Cheapflights offers flight deals from Ontario to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Can I find deals for flights from Ontario to San Antonio that allow pets onboard?

Many airlines flying from Ontario to San Antonio offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Can I find deals on last-minute flights from Ontario to San Antonio?

Yes, you can often find last-minute deals on Ontario to San Antonio flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Flights from Ontario, CA to San Antonio, TX from $70

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

The best prices from Ontario to San Antonio are usually found in January or February, booked 86 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Ontario to San Antonio

Popular in	April
Cheapest in	January
Round-trip from	$291
One-way from	$143

High demand for flights, 19% potential price rise

Search Deals

Best time to find cheap flights, 23% potential price drop

Search Deals

From Ontario to San Antonio

Search Deals

One-way flight from Ontario to San Antonio

Search Deals

What is the cheapest day to fly round-trip from Ontario to San Antonio?

Saturday 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.

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 22 days early can save you up to 48% on average compared to booking a flight this week. If booking 22 days before your flight isn’t an option for you, users have found flights from Ontario to San Antonio for as little as $195 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 $376 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 April. Prices are generally better when you fly from Ontario to San Antonio in October, with the cheapest ticket starting at $76.

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 at noon. Doing so could potentially save you 38% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap Frontier flights from Ontario to San Antonio

Check out some of the cheapest Frontier flights we've come across from Ontario to San Antonio. Come back soon if you're not finding the exact deal you're looking for.

Thu 8/299:36 pmONT - SAT

1 stop18h 08mFrontier

Mon 9/26:40 pmSAT - ONT

1 stop25h 29mFrontier

Deal found 5/28$140

Sat 6/812:59 amONT - SAT

1 stop18h 58mFrontier

Mon 6/109:23 amSAT - ONT

1 stop13h 12mFrontier

Deal found 5/28$159

Wed 6/125:41 pmONT - SAT

1 stop25h 03mFrontier

Wed 6/1910:34 pmSAT - ONT

1 stop14h 25mFrontier

Deal found 5/27$170

Tue 9/1712:49 amONT - SAT

1 stop5h 30mFrontier

Sat 9/216:40 pmSAT - ONT

1 stop14h 28mFrontier

Deal found 5/28$176

Sat 6/812:59 amONT - SAT

1 stop18h 58mFrontier

Sun 6/1610:58 pmSAT - ONT

1 stop9h 25mFrontier

Deal found 5/28$177

Fri 8/235:30 pmONT - SAT

1 stop22h 14mFrontier

Mon 8/266:40 pmSAT - ONT

1 stop25h 29mFrontier

Deal found 5/28$181

Fri 8/238:35 pmONT - SAT

1 stop19h 09mFrontier

Mon 8/266:40 pmSAT - ONT

1 stop16h 26mFrontier

Deal found 5/28$182

Fri 8/238:35 pmONT - SAT

1 stop19h 09mFrontier

Mon 8/266:40 pmSAT - ONT

1 stop25h 29mFrontier

Deal found 5/28$183

Thu 8/1512:49 amONT - SAT

1 stop5h 30mFrontier

Sat 8/179:19 amSAT - ONT

1 stop16h 25mFrontier

Deal found 5/27$186

Cheap American Airlines flights from Ontario to San Antonio

Some of the lowest-priced American Airlines flights we've found at this time heading from Ontario to San Antonio. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Sun 6/1611:59 pmONT - SAT

1 stop6h 34mAmerican Airlines

Tue 6/182:51 pmSAT - ONT

1 stop5h 46mAmerican Airlines

Deal found 5/29$302

Thu 8/2911:59 pmONT - SAT

1 stop6h 20mAmerican Airlines

Sun 9/12:57 pmSAT - ONT

1 stop5h 30mAmerican Airlines

Deal found 5/28$309

Tue 7/24:36 pmONT - SAT

1 stop4h 37mAmerican Airlines

Sat 7/62:45 pmSAT - ONT

1 stop5h 37mAmerican Airlines

Deal found 5/28$319

Fri 6/1410:54 amONT - SAT

1 stop6h 01mAmerican Airlines

Tue 6/186:55 pmSAT - ONT

1 stop4h 45mAmerican Airlines

Deal found 5/28$356

Wed 6/59:24 amONT - SAT

1 stop5h 18mAmerican Airlines

Tue 6/1110:16 amSAT - ONT

1 stop5h 32mAmerican Airlines

Deal found 5/27$686

Fri 6/78:10 amONT - SAT

1 stop7h 47mAmerican Airlines

Wed 6/129:23 amSAT - ONT

2 stops8h 28mAmerican Airlines

Deal found 5/27$691

Fri 6/76:30 amONT - SAT

2 stops7h 18mAmerican Airlines

Wed 6/1212:29 pmSAT - ONT

2 stops8h 08mAmerican Airlines

Deal found 5/27$696

Tue 6/411:59 pmONT - SAT

1 stop6h 34mAmerican Airlines

Wed 6/512:29 pmSAT - ONT

2 stops8h 08mAmerican Airlines

Deal found 5/27$706

Tue 6/412:53 pmONT - SAT

2 stops9h 01mAmerican Airlines

Thu 6/68:35 pmSAT - ONT

1 stop5h 24mAmerican Airlines

Deal found 5/28$711

Cheap Ontario to San Antonio flights in May & June 2024

The lowest fares we've come across on flights traveling from Ontario to San Antonio in May and June 2024. For more flight deals, be sure to check back very soon.

Thu 6/61:03 pmONT - SAT

1 stop5h 41mFrontier

Sun 6/1610:58 pmSAT - ONT

1 stop9h 25mFrontier

Deal found 5/28$177

Tue 6/1112:59 amONT - SAT

1 stop18h 34mFrontier

Sat 6/156:27 pmSAT - ONT

2 stops14h 11mFrontier

Deal found 5/27$182

Tue 6/1112:59 amONT - SAT

1 stop18h 34mFrontier

Mon 6/249:23 amSAT - ONT

1 stop24h 04mFrontier

Deal found 5/27$186

Tue 6/1112:59 amONT - SAT

1 stop18h 34mFrontier

Wed 6/1910:34 pmSAT - ONT

1 stop14h 25mFrontier

Deal found 5/27$187

Sun 6/912:59 amONT - SAT

1 stop5h 23mFrontier

Sat 6/153:02 pmSAT - ONT

1 stop10h 47mFrontier

Deal found 5/28$189

Sun 6/912:59 amONT - SAT

1 stop5h 23mFrontier

Wed 6/1210:34 pmSAT - ONT

1 stop27h 25mFrontier

Deal found 5/26$192

Sun 6/912:59 amONT - SAT

1 stop5h 23mFrontier

Sat 6/156:27 pmSAT - ONT

2 stops14h 11mFrontier

Deal found 5/28$194

Tue 6/412:59 amONT - SAT

1 stop18h 34mFrontier

Mon 6/104:19 pmSAT - ONT

1 stop24h 35mFrontier

Deal found 5/26$195

Thu 6/61:03 pmONT - SAT

1 stop5h 41mFrontier

Thu 6/138:02 pmSAT - ONT

1 stop12h 21mFrontier

Deal found 5/28$196

Ontario to San Antonio 2024 flight deals

The lowest fares we've come across on flights traveling from Ontario to San Antonio in May and June 2024. For more flight deals, be sure to check back very soon.

Thu 6/61:03 pmONT - SAT

1 stop5h 41mFrontier

Sun 6/1610:58 pmSAT - ONT

1 stop9h 25mFrontier

Deal found 5/28$177

Tue 6/1112:59 amONT - SAT

1 stop18h 34mFrontier

Sat 6/156:27 pmSAT - ONT

2 stops14h 11mFrontier

Deal found 5/27$182

Fri 8/308:27 pmONT - SAT

1 stop9h 52mFrontier

Sat 8/316:40 pmSAT - ONT

1 stop14h 28mFrontier

Deal found 5/27$183

Tue 6/1112:59 amONT - SAT

1 stop18h 34mFrontier

Mon 6/249:23 amSAT - ONT

1 stop24h 04mFrontier

Deal found 5/27$186

Tue 6/1112:59 amONT - SAT

1 stop18h 34mFrontier

Wed 6/1910:34 pmSAT - ONT

1 stop14h 25mFrontier

Deal found 5/27$187

Sun 6/912:59 amONT - SAT

1 stop5h 23mFrontier

Sat 6/153:02 pmSAT - ONT

1 stop10h 47mFrontier

Deal found 5/28$189

Wed 7/248:17 amONT - SAT

1 stop10h 43mFrontier

Wed 8/149:19 amSAT - ONT

1 stop12h 18mFrontier

Deal found 5/27$191

Sun 6/912:59 amONT - SAT

1 stop5h 23mFrontier

Wed 6/1210:34 pmSAT - ONT

1 stop27h 25mFrontier

Deal found 5/26$192

Thu 7/2512:59 amONT - SAT

1 stop5h 16mFrontier

Mon 8/1210:59 pmSAT - ONT

1 stop15h 33mFrontier

Deal found 5/27$193

Ontario to San Antonio flights leaving soon

Have a look at some of the last-minute flights available departing from Ontario to San Antonio. To prevent any unwanted surprises, users should verify their flight info before booking.

Thu 6/61:03 pmONT - SAT

1 stop5h 41mFrontier

Sun 6/1610:58 pmSAT - ONT

1 stop9h 25mFrontier

Deal found 5/28$177

Tue 6/412:59 amONT - SAT

1 stop18h 34mFrontier

Mon 6/104:19 pmSAT - ONT

1 stop24h 35mFrontier

Deal found 5/26$195

Thu 6/61:03 pmONT - SAT

1 stop5h 41mFrontier

Thu 6/138:02 pmSAT - ONT

1 stop12h 21mFrontier

Deal found 5/28$196

Wed 6/56:06 pmONT - SAT

1 stop24h 38mFrontier

Mon 6/109:23 amSAT - ONT

1 stop24h 04mFrontier

Deal found 5/26$197

Tue 6/48:29 pmONT - SAT

1 stop19h 41mFrontier

Sat 6/156:27 pmSAT - ONT

2 stops14h 11mFrontier

Deal found 5/26$198

Fri 6/710:23 pmONT - SAT

1 stop9h 18mFrontier

Mon 6/104:19 pmSAT - ONT

1 stop22h 35mFrontier

Deal found 5/27$201

Thu 6/612:44 amONT - SAT

1 stop5h 43mFrontier

Sun 6/910:58 pmSAT - ONT

1 stop9h 25mFrontier

Deal found 5/26$206

Tue 6/410:42 pmONT - SAT

1 stop17h 28mFrontier

Fri 6/79:27 amSAT - ONT

1 stop16h 13mFrontier

Deal found 5/27$211

Wed 6/512:49 amONT - SAT

1 stop16h 19mFrontier

Fri 6/79:27 amSAT - ONT

1 stop16h 13mFrontier

Deal found 5/26$246

One-way flights to San Antonio from Ontario

Take a look at some of the one-way flights we've detected from Ontario to San Antonio. Those needing a return flight from Ontario to San Antonio can use the search form above.

Thu 6/61:03 pmONT - SAT

1 stop5h 41mFrontier

Deal found 5/29$70

Wed 6/127:39 amONT - SAT

2 stops8h 03mFrontier

Deal found 5/28$75

Wed 6/58:03 amONT - SAT

1 stop11h 30mFrontier

Deal found 5/28$76

Wed 6/127:39 amONT - SAT

2 stops8h 03mFrontier

Deal found 5/28$79

Tue 6/412:59 amONT - SAT

1 stop18h 34mFrontier

Deal found 5/29$80

Tue 6/412:59 amONT - SAT

1 stop18h 34mFrontier

Deal found 5/28$81

Thu 6/612:44 amONT - SAT

1 stop5h 43mFrontier

Deal found 5/28$82

Tue 6/412:59 amONT - SAT

1 stop18h 34mFrontier

Deal found 5/28$87

Wed 6/512:49 amONT - SAT

1 stop16h 19mFrontier

Deal found 5/29$88

Find flights from Ontario to San Antonio within your budget

Fly from

Fly to

Budget

$140 - $359

Route

Depart

Return

Price

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Thu 8/29

1 stop18h 08m

San Antonio

Mon 9/2

1 stop25h 29m

$140

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Sat 6/8

1 stop18h 58m

San Antonio

Mon 6/10

1 stop13h 12m

$159

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Wed 6/12

1 stop25h 03m

San Antonio

Wed 6/19

1 stop14h 25m

$170

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Tue 9/17

1 stop5h 30m

San Antonio

Sat 9/21

1 stop14h 28m

$176

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Sat 6/8

1 stop18h 58m

San Antonio

Sun 6/16

1 stop9h 25m

$177

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Fri 7/5

1 stop5h 59m

San Antonio

Tue 7/9

1 stop7h 40m

$279

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Sun 6/16

1 stop6h 34m

San Antonio

Tue 6/18

1 stop5h 46m

$302

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Thu 7/4

1 stop5h 26m

San Antonio

Tue 7/9

1 stop7h 59m

$351

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Tue 7/2

1 stop8h 19m

San Antonio

Tue 7/9

1 stop5h 33m

$359

Flights are sorted by cheapest first

Deals found on 5/28

When is the best time to book a flight from Ontario to San Antonio?

The best time to book flights from Ontario to San Antonio is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Search Deals

When is the cheapest time to fly from Ontario to San Antonio?

Morning

Noon

Afternoon

Evening

All times are departure.

Travelers seeking maximum savings on their Ontario to San Antonio flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Search Deals

Best time to book a flight from Ontario to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Ontario with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in San Antonio by month

SAT Temperature	51.8 - 84.2 °F

SAT

Temperature

51.8 - 84.2 °F

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Frontier, American Airlines and Delta from Ontario to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.2

Very good

5,963 reviews

Check prices

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest

8.2

Very good

5,963 reviews

Southwest

8.2

Very good

5,963 reviews

Check prices

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines

8.1

Very good

9,194 reviews

Southwest

8.2

Very good

5,963 reviews

Check prices

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta

8.0

Very good

10,476 reviews

Southwest

8.2

Very good

5,963 reviews

Check prices

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

JetBlue

7.6

Good

4,370 reviews

Southwest

8.2

Very good

5,963 reviews

Check prices

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines

7.4

Good

10,799 reviews

Southwest

8.2

Very good

5,963 reviews

Check prices

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

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 $140, but on average you can expect to pay $187.
Are there last-minute flights available from Ontario to San Antonio for under $200?
There are currently 20+ open flights from Ontario to San Antonio within the next 7 days for less than $200.
What is the cheapest airline to fly from Ontario to San Antonio round-trip?
According to our current data, Frontier ($140), offers the cheapest pricing from Ontario to San Antonio. Frontier is 60% 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 ($70), Delta ($143), and American Airlines ($148).
What does ONT to SAT mean?
This is defined as Ontario Airport (ONT) and San Antonio Airport (SAT). Codes like San Antonio Airport are often used to just call airports uniquely.
Can I find deals for flights from Ontario to San Antonio that include extra baggage allowance?
The amount of baggage you can bring on your Ontario to San Antonio flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.
Can I find deals on flights from Ontario to San Antonio with specific airlines?
Yes, Cheapflights allows you to browse and filter Ontario to San Antonio flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.
Can I find deals for flights from Ontario to San Antonio that include hotel bookings?
Yes. In addition to deals on Ontario to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to San Antonio?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Antonio.
Can I find deals for business class flights from Ontario to San Antonio?
Yes. Cheapflights offers flight deals from Ontario to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Can I find deals for flights from Ontario to San Antonio that allow pets onboard?
Many airlines flying from Ontario to San Antonio offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.
Can I find deals on last-minute flights from Ontario to San Antonio?
Yes, you can often find last-minute deals on Ontario to San Antonio flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
How recently were the Ontario to San Antonio flight deals updated?
The Ontario to San Antonio flight deals you see on this page were last updated on 5/28.
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 American Airlines, Delta or Frontier as they are the most popular for this route.
When is the best time to book a flight from Ontario to San Antonio?
Currently, September is the cheapest month in which you can book a flight from Ontario to San Antonio (average of $291). Flying from Ontario to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ontario to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.

Los Angeles to Dallas/Fort Worth flights

Los Angeles to Hobby flights

Los Angeles to George Bush Intcntl flights

San Francisco to Dallas/Fort Worth flights

Ontario to Dallas/Fort Worth flights

Burbank to Dallas/Fort Worth flights

Los Angeles to Austin flights

Santa Ana to Dallas/Fort Worth flights

San Diego to Dallas/Fort Worth flights

San Francisco to Austin flights

San Jose to Dallas/Fort Worth flights

Oakland to Dallas/Fort Worth flights

Ontario to Hobby flights

San Francisco to Hobby flights

Los Angeles to San Antonio flights

Ontario to George Bush Intcntl flights

San Francisco to George Bush Intcntl flights

Las Vegas to Dallas/Fort Worth flights

Ontario to Austin flights

Sacramento to Dallas/Fort Worth flights

Burbank to Hobby flights

Burbank to George Bush Intcntl flights

San Diego to Hobby flights

San Diego to Austin flights

Oakland to Hobby flights

San Diego to George Bush Intcntl flights

Santa Ana to Hobby flights

Los Angeles to El Paso flights

Oakland to Austin flights

Sacramento to Hobby flights

Oakland to George Bush Intcntl flights

San Francisco to San Antonio flights

Las Vegas to Hobby flights

San Jose to Austin flights

Santa Ana to George Bush Intcntl flights

San Jose to Hobby flights

Santa Ana to Austin flights

Los Angeles to Love Field flights

Burbank to San Antonio flights

Las Vegas to George Bush Intcntl flights

Las Vegas to Austin flights

Sacramento to George Bush Intcntl flights

Las Vegas to Love Field flights

Reno to Hobby flights

Fresno to Dallas/Fort Worth flights

San Jose to George Bush Intcntl flights

Santa Ana to Love Field flights

Long Beach to Dallas/Fort Worth flights

Sacramento to Austin flights

Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 29, 2024.

Top 5 airlines flying from Ontario to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$94	Average$148	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
Frontier	Cheapest$119	Average$194	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
Delta	Cheapest$211	Average$382	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
American Airlines	Cheapest$255	Average$431	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	Cheapest$272	Average$461	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Los Angeles to Salt Lake City flights

Dallas to Seattle flights

Philadelphia to Atlanta flights

Denver to Austin flights

Washington, D.C. to Boston flights

Kansas City to Orlando flights

Boston to Rome flights

Dallas to Toronto flights

Houston to Paris flights

Seattle to Chicago flights

Los Angeles to Chicago O'Hare Intl Airport flights

Ontario to Savannah flights

Search flights from Ontario to San Antonio by cabin class

Book a flight to one of these trending destinations

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to San Antonio?

Cheapflights helps you search for flights from Ontario to San Antonio via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to San Antonio?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Antonio from Ontario.

Can Cheapflights find flights from Ontario to San Antonio with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to San Antonio flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ontario to San Antonio become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to San Antonio on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

View all available airlines

Cheap flights from Ontario to San Antonio (ONT - SAT) from $70

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

The best prices from Ontario to San Antonio are usually found in January or February, booked 86 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Ontario to San Antonio

Popular in

Cheapest in

Round-trip from

One-way from

What is the cheapest day to fly round-trip from Ontario to San Antonio?

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

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

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

Cheap Frontier flights from Ontario to San Antonio

Check out some of the cheapest Frontier flights we've come across from Ontario to San Antonio. Come back soon if you're not finding the exact deal you're looking for.

Cheap American Airlines flights from Ontario to San Antonio

Some of the lowest-priced American Airlines flights we've found at this time heading from Ontario to San Antonio. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Cheap Ontario to San Antonio flights in May & June 2024

Find cheap flight options from Ontario to San Antonio specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Prices were last updated on May 29, 2024.

The lowest fares we've come across on flights traveling from Ontario to San Antonio in May and June 2024. For more flight deals, be sure to check back very soon.

Ontario to San Antonio 2024 flight deals

Discover exclusive flight deals for travel between Ontario and San Antonio in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.

The lowest fares we've come across on flights traveling from Ontario to San Antonio in May and June 2024. For more flight deals, be sure to check back very soon.

Ontario to San Antonio flights leaving soon

Have a look at some of the last-minute flights available departing from Ontario to San Antonio. To prevent any unwanted surprises, users should verify their flight info before booking.

One-way flights to San Antonio from Ontario

Take a look at some of the one-way flights we've detected from Ontario to San Antonio. Those needing a return flight from Ontario to San Antonio can use the search form above.

Find flights from Ontario to San Antonio within your budget

When is the best time to book a flight from Ontario to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to San Antonio. Price data was last updated on May 24, 2024.

The best time to book flights from Ontario to San Antonio is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

When is the cheapest time to fly from Ontario to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Ontario to San Antonio. Price data was last updated on May 26, 2024.

Best time to book a flight from Ontario to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Ontario with our price prediction graph.

Temperature and rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature and rainfall totals by month.

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Frontier, American Airlines and Delta from Ontario to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

Are there last-minute flights available from Ontario to San Antonio for under $200?

What is the cheapest airline to fly from Ontario to San Antonio round-trip?

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

What does ONT to SAT mean?

Can I find deals for flights from Ontario to San Antonio that include extra baggage allowance?

Can I find deals on flights from Ontario to San Antonio with specific airlines?

Can I find deals for flights from Ontario to San Antonio that include hotel bookings?

How can I find direct flights from Ontario to San Antonio?

Can I find deals for business class flights from Ontario to San Antonio?

Can I find deals for flights from Ontario to San Antonio that allow pets onboard?

Can I find deals on last-minute flights from Ontario to San Antonio?

How recently were the Ontario to San Antonio flight deals updated?

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

When is the best time to book a flight from Ontario to San Antonio?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to San AntonioSee prices for flight routes from nearby airports that may be better suited for you.

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

Top 5 airlines flying from Ontario to San Antonio

Popular flight searches

Check out other popular destinations found by fellow travelers in 2024

Search flights from Ontario to San Antonio by cabin class

Find flights from Ontario to San Antonio, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to San Antonio?

Why should you use Cheapflights to find cheap flight tickets from Ontario to San Antonio?

Can Cheapflights find flights from Ontario to San Antonio with no change fees?

Can Cheapflights notify me if prices for flights from Ontario to San Antonio become cheaper?

100% Free

Book with Flexibility

Travel Smart

Alternative routes for Ontario to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.