Which airport typically offers the quickest layover for flights from Ontario to San Antonio?

Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 0h 41m.

What’s the fastest layover option from Ontario to San Antonio?

Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 4h 25m.

What’s the top layover airport for flights from Ontario to San Antonio?

Phoenix (PHX) – chosen by Cheapflights users on 60% of 1-stop itineraries from Ontario to San Antonio on Cheapflights.

What’s the cheapest layover airport for flights from Ontario to San Antonio?

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $130.

How long is the flight from Ontario to San Antonio?

For as low as $281, Frontier can have you in San Antonio from Ontario in 5h 07m. The distance between Ontario and San Antonio is about 1163 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

According to our current data, Frontier ($110), Spirit Airlines ($118), and Delta ($200) offers the cheapest pricing from Ontario to San Antonio. Frontier is 66% 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 ($69), United Airlines ($109), and American Airlines ($128).

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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, Southwest or Frontier as they are the most popular for this route.

Most accurate provider : When it comes to deals on Ontario-San Antonio flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-San Antonio flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-San Antonio flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-San Antonio flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$64+ Flights from Ontario to San Antonio

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

Find cheap flights from Ontario to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Ontario to San Antonio are usually found in October or January, booked 64 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Ontario to San Antonio

Cheapest flights from Ontario to San Antonio
Explore the most affordable flight options available from Ontario to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

Wed 12/246:45 amONT - SAT

1 stop28h 29mFrontier

Wed 12/316:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/7

$165

Sun 12/216:45 amONT - SAT

1 stop15h 32mFrontier

Thu 1/16:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/7

$199

Thu 12/256:45 amONT - SAT

1 stop26h 36mFrontier

Thu 1/811:55 amSAT - ONT

1 stop6h 25mFrontier

Deal found 12/6

$208

Sun 12/286:00 amONT - SAT

1 stop5h 16mFrontier

Wed 12/316:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/6

$209

Wed 12/316:45 amONT - SAT

1 stop15h 32mFrontier

Thu 1/158:53 pmSAT - ONT

1 stop12h 44mFrontier

Deal found 12/6

$218

Mon 12/296:00 amONT - SAT

1 stop5h 16mFrontier

Sat 1/32:52 pmSAT - ONT

1 stop10h 29mFrontier

Deal found 12/8

$224

Tue 12/306:45 amONT - SAT

1 stop15h 32mFrontier

Wed 12/316:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/8

$225

Thu 12/116:15 amONT - SAT

1 stop4h 41mFrontier

Tue 12/232:01 pmSAT - ONT

1 stop5h 21mFrontier

Deal found 12/6

$233

Thu 12/186:45 amONT - SAT

1 stop15h 32mFrontier

Tue 12/232:01 pmSAT - ONT

1 stop5h 21mFrontier

Deal found 12/7

$234

Fri 12/266:45 amONT - SAT

1 stop15h 32mFrontier

Thu 1/16:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/6

$243

Tue 12/236:45 amONT - SAT

1 stop15h 32mFrontier

Wed 12/316:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/8

$245

Best flights from Ontario to San Antonio
Discover carefully curated flight deals from Ontario to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 8, 2025.

Mon 2/26:20 amONT - SAT

1 stop11h 13mFrontier

Mon 2/98:24 pmSAT - ONT

1 stop5h 56mFrontier

Deal found 12/8

$155

Wed 1/2812:41 pmONT - SAT

1 stop8h 13mDelta

Sat 1/315:20 amSAT - ONT

1 stop8h 11mDelta

Deal found 12/6

$281

Thu 1/16:10 amONT - SAT

1 stop5h 07mUnited Airlines

Sat 1/178:30 amSAT - ONT

1 stop6h 17mUnited Airlines

Deal found 12/6

$281

Wed 1/286:22 amONT - SAT

2 stops7h 23mAmerican Airlines

Sat 1/319:30 amSAT - ONT

1 stop6h 48mAmerican Airlines

Deal found 12/7

$342

Mon 12/296:45 amONT - SAT

1 stop15h 32mFrontier

Wed 12/316:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/8

$289

Wed 1/141:24 pmONT - SAT

2 stops7h 33mUnited Airlines

Sun 1/188:30 amSAT - ONT

1 stop6h 17mUnited Airlines

Deal found 12/8

$314

Sun 12/216:45 amONT - SAT

1 stop15h 32mFrontier

Fri 1/22:01 pmSAT - ONT

1 stop5h 08mFrontier

Deal found 12/6

$290

Thu 2/126:00 amONT - SAT

1 stop25h 18mFrontier

Mon 2/161:24 pmSAT - ONT

1 stop5h 38mFrontier

Deal found 12/7

$292

Thu 3/196:15 amONT - SAT

1 stop4h 41mFrontier

Mon 3/231:51 pmSAT - ONT

1 stop9h 26mFrontier

Deal found 12/6

$350

Last-minute flights from Ontario to San Antonio
Discover last-minute flight deals from Ontario to San Antonio. Data last updated December 8, 2025 and is based on user searches.

Wed 12/246:45 amONT - SAT

1 stop28h 29mFrontier

Wed 12/316:45 amSAT - ONT

1 stop19h 14mFrontier

Deal found 12/7

$165

Wed 1/77:00 amONT - SAT

1 stop24h 18mFrontier

Sat 1/103:55 pmSAT - ONT

2 stops41h 41mFrontier

Deal found 12/7

$170

Thu 1/810:18 pmONT - SAT

1 stop11h 31mFrontier

Sat 1/103:55 pmSAT - ONT

1 stop9h 19mFrontier

Deal found 12/7

$182

Wed 1/147:15 amONT - SAT

1 stop24h 15mFrontier

Sun 1/185:02 pmSAT - ONT

2 stops16h 35mFrontier

Deal found 12/8

$188

Wed 1/213:07 pmONT - SAT

1 stop20h 04mFrontier

Mon 1/268:24 pmSAT - ONT

1 stop5h 56mFrontier

Deal found 12/6

$129

Thu 1/228:48 pmONT - SAT

1 stop13h 37mFrontier

Fri 1/309:59 pmSAT - ONT

2 stops27h 25mFrontier

Deal found 12/8

$166

Fri 1/2310:18 amONT - SAT

1 stop8h 46mFrontier

Mon 1/268:24 pmSAT - ONT

1 stop5h 56mFrontier

Deal found 12/6

$128

One-way flights from Ontario to San Antonio
Search for one-way flight options from Ontario to San Antonio. Find affordable one-way fares based on user searches. Data last updated December 8, 2025.

Tue 2/107:00 amONT - SAT

1 stop6h 14mFrontier

Deal found 12/5

$64

Thu 1/228:48 pmONT - SAT

1 stop22h 16mFrontier

Deal found 12/5

$70

Thu 2/196:00 amONT - SAT

1 stop25h 18mFrontier

Deal found 12/7

$71

Mon 2/96:20 amONT - SAT

1 stop11h 13mFrontier

Deal found 12/7

$86

Wed 12/246:45 amONT - SAT

1 stop28h 29mFrontier

Deal found 12/7

$88

Wed 12/316:45 amONT - SAT

1 stop15h 32mFrontier

Deal found 12/8

$89

Thu 1/156:10 amONT - SAT

1 stop7h 04mFrontier

Deal found 12/8

$91

Tue 3/37:00 amONT - SAT

1 stop6h 14mFrontier

Deal found 12/6

$92

Sun 3/16:30 amONT - SAT

2 stops24h 48mFrontier

Deal found 12/5

$94

Sat 3/76:00 amONT - SAT

1 stop16h 17mFrontier

Deal found 12/7

$96

Thu 1/86:00 amONT - SAT

1 stop25h 18mFrontier

Deal found 12/7

$97

Find flight deals from Ontario to San Antonio

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$128 (Frontier)
One-way from	$64 (Frontier)
Popular in	March
Cheapest in	October
Average price	$343

Provider with most accurate pricing for Ontario-San Antonio flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-San Antonio flights.

Search Deals

From Ontario to San Antonio

Search Deals

One-way flight from Ontario to San Antonio

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($32 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Mon 2/2

6:20 am-7:33 pm

1 stop11h 13m

San Antonio

Mon 2/9

8:24 pm-12:20 am

1 stop5h 56m

$155

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Wed 1/28

12:41 pm-10:54 pm

1 stop8h 13m

San Antonio

Sat 1/31

5:20 am-11:31 am

1 stop8h 11m

$281

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Thu 1/1

6:10 am-1:17 pm

1 stop5h 07m

San Antonio

Sat 1/17

8:30 am-12:47 pm

1 stop6h 17m

$281

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Mon 12/29

6:45 am-12:17 am

1 stop15h 32m

San Antonio

Wed 12/31

6:45 am-11:59 pm

1 stop19h 14m

$289

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Sun 12/21

6:45 am-12:17 am

1 stop15h 32m

San Antonio

Fri 1/2

2:01 pm-5:09 pm

1 stop5h 08m

$290

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Thu 2/12

6:00 am-9:18 am

1 stop25h 18m

San Antonio

Mon 2/16

1:24 pm-5:02 pm

1 stop5h 38m

$292

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Wed 1/14

1:24 pm-10:57 pm

2 stops7h 33m

San Antonio

Sun 1/18

8:30 am-12:47 pm

1 stop6h 17m

$314

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Wed 1/28

6:22 am-3:45 pm

2 stops7h 23m

San Antonio

Sat 1/31

9:30 am-2:18 pm

1 stop6h 48m

$342

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Thu 3/19

6:15 am-12:56 pm

1 stop4h 41m

San Antonio

Mon 3/23

1:51 pm-9:17 pm

1 stop9h 26m

$350

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Fri 2/20

6:00 am-9:18 am

1 stop25h 18m

$71

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 20 results

Compare providers for flights from Ontario to San Antonio

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to San Antonio in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-San Antonio flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-San Antonio flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-San Antonio flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-San Antonio flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to San Antonio

Prices

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

The best time to book flights from Ontario to San Antonio is 64 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.

What is the cheapest month 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 $58). Flying from Ontario to San Antonio in March is currently the most expensive (average of $97). 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.

What is the cheapest time of day to fly from ONT to SAT?

It’s typically best to fly out from Ontario to San Antonio in the evening. Doing so could potentially save you 23% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

Reviews of airlines servicing San Antonio

See what other customers who have flown with Southwest, United Airlines, and American Airlines from Ontario to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Southwest

8.0

Very good

4,254 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

United Airlines

7.4

Good

9,089 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

American Airlines

7.2

Good

11,045 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Spirit Airlines

6.3

Okay

8,168 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Frontier

5.8

Fair

3,085 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

How long is the flight from Ontario to San Antonio?
For as low as $281, Frontier can have you in San Antonio from Ontario in 5h 07m. The distance between Ontario and San Antonio is about 1163 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Ontario to San Antonio round-trip?
According to our current data, Frontier ($110), Spirit Airlines ($118), and Delta ($200) offers the cheapest pricing from Ontario to San Antonio. Frontier is 66% 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 ($69), United Airlines ($109), and American Airlines ($128).
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.
What is the cheapest month 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 $58). Flying from Ontario to San Antonio in March is currently the most expensive (average of $97). 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

New Braunfels

Kerrville

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Ontario to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$110	Average$216	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$118	Average$170	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$200	Average$367	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$226	Average$386	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$256	Average$386	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$270	Average$406	FlexibilityNo cancel fee	On-time69%

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$64+ Cheap flights from Ontario to San Antonio (ONT - SAT)

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to San Antonio with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Ontario to San Antonio are usually found in October or January, booked 64 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Ontario to San Antonio

Cheapest flights from Ontario to San AntonioExplore the most affordable flight options available from Ontario to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

Explore the most affordable flight options available from Ontario to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

Find flight deals from Ontario to San Antonio

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to San Antonio that are best for you.

Compare providers for flights from Ontario to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to San Antonio in December.

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to San Antonio

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

What is the cheapest month to book a flight from Ontario to San Antonio?

What is the cheapest time of day to fly from ONT to SAT?

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

What’s the top layover airport for flights from Ontario to San Antonio?

What’s the cheapest layover airport for flights from Ontario to San Antonio?

What’s the fastest layover option from Ontario to San Antonio?

Which airport typically offers the quickest layover for flights from Ontario to San Antonio?

Reviews of airlines servicing San Antonio

See what other customers who have flown with Southwest, United Airlines, and American Airlines from Ontario to San Antonio have to say. You can also see how each airline compares 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.

How long is the flight from Ontario to San Antonio?

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

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

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?

What is the cheapest month to book a flight from Ontario to San Antonio?

Traveling to a place near San Antonio?

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Alternative routes for Ontario to San Antonio

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Top 6 airlines flying from Ontario to San Antonio

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Cheapest flights from Ontario to San Antonio
Explore the most affordable flight options available from Ontario to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.