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

Flights via Houston (HOU) offer the fastest connection on this route, with an average layover time of 1h 20m.

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

Flights via Houston (HOU) have the shortest average one-way travel time for 1-stop routes: 5h 40m.

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.

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

Denver (DEN) – chosen by Cheapflights users on 50% of 1-stop itineraries from Ontario to San Antonio on Cheapflights.

How long is the flight from Ontario to San Antonio?

For as low as $169, Frontier can have you in San Antonio from Ontario in 33h 43m. The distance between Ontario and San Antonio is about 1163 mi.

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

According to our current data, Frontier ($107), Spirit Airlines ($116), and Delta ($200) offers the cheapest pricing from Ontario to San Antonio. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.

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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San Antonio flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

$54+ Flights from Ontario to San Antonio

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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 65 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Ontario to San Antonio

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$108 (Frontier)
One-way from	$54 (Frontier)
Popular in	December
Cheapest in	October
Average price	$297

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

High demand for flights, 1% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find 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 October 14, 2025.

Thu 11/136:00 amONT - SAT

1 stop5h 19mFrontier

Sat 11/153:12 pmSAT - ONT

1 stop10h 38mFrontier

Deal found 10/12

$108

Thu 11/66:00 amONT - SAT

1 stop5h 19mFrontier

Mon 11/102:04 pmSAT - ONT

1 stop9h 53mFrontier

Deal found 10/12

$109

Fri 10/316:00 amONT - SAT

1 stop5h 19mFrontier

Mon 11/32:04 pmSAT - ONT

1 stop9h 53mFrontier

Deal found 10/11

$129

Sat 11/16:53 amONT - SAT

1 stop5h 24mFrontier

Sun 11/210:46 pmSAT - ONT

1 stop25h 11mFrontier

Deal found 10/12

$130

Sun 11/96:45 amONT - SAT

1 stop10h 45mFrontier

Thu 11/1310:46 pmSAT - ONT

1 stop10h 31mFrontier

Deal found 10/13

$131

Wed 10/298:00 amONT - SAT

1 stop27h 19mMultiple Airlines

Wed 11/56:45 amSAT - ONT

2 stops28h 25mMultiple Airlines

Deal found 10/13

$134

Thu 10/236:05 amONT - SAT

1 stop5h 14mFrontier

Thu 10/3010:46 pmSAT - ONT

1 stop10h 31mFrontier

Deal found 10/10

$136

Sat 11/16:53 amONT - SAT

1 stop5h 24mFrontier

Sat 11/154:20 pmSAT - ONT

1 stop6h 22mFrontier

Deal found 10/13

$141

Mon 11/107:24 pmONT - SAT

2 stops26h 21mMultiple Airlines

Mon 11/172:04 pmSAT - ONT

1 stop9h 53mMultiple Airlines

Deal found 10/12

$147

Fri 10/316:00 amONT - SAT

1 stop5h 19mFrontier

Sun 11/28:26 pmSAT - ONT

1 stop16h 44mFrontier

Deal found 10/11

$151

Fri 11/710:43 pmONT - SAT

1 stop14h 52mFrontier

Sun 11/92:04 pmSAT - ONT

1 stop10h 01mFrontier

Deal found 10/12

$152

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 October 14, 2025.

Wed 10/298:00 amONT - SAT

1 stop27h 19mMultiple Airlines

Wed 11/56:45 amSAT - ONT

2 stops15h 57mMultiple Airlines

Deal found 10/13

$158

Wed 11/128:00 amONT - SAT

2 stops33h 43mFrontier

Sat 11/153:12 pmSAT - ONT

1 stop10h 38mFrontier

Deal found 10/12

$169

Mon 12/225:10 pmONT - SAT

1 stop5h 32mDelta

Mon 1/56:05 pmSAT - ONT

1 stop6h 47mDelta

Deal found 10/12

$305

Mon 12/225:20 pmONT - SAT

1 stop4h 50mSouthwest

Mon 1/55:30 pmSAT - ONT

1 stop5h 05mSouthwest

Deal found 10/12

$305

Tue 10/288:00 amONT - SAT

1 stop13h 40mMultiple Airlines

Wed 11/56:45 amSAT - ONT

2 stops15h 57mMultiple Airlines

Deal found 10/13

$174

Mon 12/156:30 amONT - SAT

1 stop4h 26mFrontier

Thu 12/187:00 amSAT - ONT

1 stop5h 57mFrontier

Deal found 10/12

$232

Tue 10/218:00 amONT - SAT

2 stops29h 16mMultiple Airlines

Tue 10/287:00 amSAT - ONT

1 stop15h 42mMultiple Airlines

Deal found 10/13

$222

Thu 10/2310:30 amONT - SAT

1 stop7h 11mMultiple Airlines

Wed 10/297:00 amSAT - ONT

2 stops25h 42mMultiple Airlines

Deal found 10/13

$251

Tue 11/44:35 pmONT - SAT

1 stop5h 56mDelta

Mon 11/105:59 pmSAT - ONT

1 stop7h 53mDelta

Deal found 10/12

$305

Wed 11/125:25 amONT - SAT

2 stops7h 05mSouthwest

Wed 11/197:40 amSAT - ONT

2 stops9h 00mSouthwest

Deal found 10/13

$307

Mon 12/225:10 pmONT - SAT

1 stop5h 32mDelta

Wed 1/76:05 pmSAT - ONT

2 stops30h 33mDelta

Deal found 10/12

$320

Wed 11/128:00 amONT - SAT

1 stop27h 19mMultiple Airlines

Wed 11/196:32 amSAT - ONT

1 stop10h 45mMultiple Airlines

Deal found 10/13

$294

Last-minute flights from Ontario to San Antonio
Discover last-minute flight deals from Ontario to San Antonio. Data last updated October 14, 2025 and is based on user searches.

Wed 10/298:00 amONT - SAT

1 stop27h 19mMultiple Airlines

Wed 11/56:45 amSAT - ONT

2 stops28h 25mMultiple Airlines

Deal found 10/13

$134

Fri 10/316:00 amONT - SAT

1 stop5h 19mFrontier

Mon 11/32:04 pmSAT - ONT

1 stop9h 53mFrontier

Deal found 10/12

$129

Fri 10/316:00 amONT - SAT

1 stop5h 19mFrontier

Sun 11/28:26 pmSAT - ONT

1 stop16h 44mFrontier

Deal found 10/11

$151

Sat 11/16:53 amONT - SAT

1 stop5h 24mFrontier

Sun 11/210:46 pmSAT - ONT

1 stop25h 11mFrontier

Deal found 10/12

$130

Sat 11/16:53 amONT - SAT

1 stop5h 24mFrontier

Sat 11/154:20 pmSAT - ONT

1 stop6h 22mFrontier

Deal found 10/13

$141

Wed 11/58:00 amONT - SAT

1 stop27h 19mMultiple Airlines

Wed 11/123:23 pmSAT - ONT

1 stop7h 19mMultiple Airlines

Deal found 10/13

$149

Thu 11/66:00 amONT - SAT

1 stop5h 19mFrontier

Mon 11/102:04 pmSAT - ONT

1 stop9h 53mFrontier

Deal found 10/12

$109

Fri 11/710:43 pmONT - SAT

1 stop14h 52mFrontier

Sun 11/92:04 pmSAT - ONT

1 stop10h 01mFrontier

Deal found 10/12

$152

Sun 11/96:45 amONT - SAT

1 stop10h 45mFrontier

Thu 11/1310:46 pmSAT - ONT

1 stop10h 31mFrontier

Deal found 10/13

$131

Mon 11/107:24 pmONT - SAT

2 stops26h 21mMultiple Airlines

Mon 11/172:04 pmSAT - ONT

1 stop9h 53mMultiple Airlines

Deal found 10/12

$147

Thu 11/136:00 amONT - SAT

1 stop5h 19mFrontier

Sat 11/153:12 pmSAT - ONT

1 stop10h 38mFrontier

Deal found 10/12

$108

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 October 14, 2025.

Thu 11/66:00 amONT - SAT

1 stop5h 19mFrontier

Deal found 10/12

$54

Wed 11/58:00 amONT - SAT

1 stop27h 19mFrontier

Deal found 10/13

$60

Fri 11/146:00 amONT - SAT

1 stop5h 19mFrontier

Deal found 10/12

$75

Thu 10/306:00 amONT - SAT

1 stop5h 19mFrontier

Deal found 10/13

$79

Thu 12/46:30 amONT - SAT

1 stop4h 26mFrontier

Deal found 10/13

$81

Sat 12/136:30 amONT - SAT

1 stop4h 26mFrontier

Deal found 10/13

$85

Wed 11/128:00 amONT - SAT

1 stop27h 19mFrontier

Deal found 10/13

$86

Sun 11/166:53 amONT - SAT

1 stop10h 37mFrontier

Deal found 10/11

$88

Fri 10/2410:47 pmONT - SAT

1 stop12h 32mFrontier

Deal found 10/14

$89

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

Wed 10/29

8:00 am-1:19 pm

1 stop27h 19m

San Antonio

Wed 11/5

6:45 am-8:42 pm

2 stops15h 57m

$158

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Wed 11/12

8:00 am-7:43 pm

2 stops33h 43m

San Antonio

Sat 11/15

3:12 pm-11:50 pm

1 stop10h 38m

$169

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Tue 10/28

8:00 am-11:40 pm

1 stop13h 40m

San Antonio

Wed 11/5

6:45 am-8:42 pm

2 stops15h 57m

$174

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Tue 10/21

8:00 am-3:16 pm

2 stops29h 16m

San Antonio

Tue 10/28

7:00 am-8:42 pm

1 stop15h 42m

$222

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Mon 12/15

6:30 am-12:56 pm

1 stop4h 26m

San Antonio

Thu 12/18

7:00 am-10:57 am

1 stop5h 57m

$232

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Thu 10/23

10:30 am-7:41 pm

1 stop7h 11m

San Antonio

Wed 10/29

7:00 am-6:42 am

2 stops25h 42m

$251

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Wed 11/12

8:00 am-1:19 pm

1 stop27h 19m

San Antonio

Wed 11/19

6:32 am-3:17 pm

1 stop10h 45m

$294

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Mon 12/22

5:10 pm-12:42 am

1 stop5h 32m

San Antonio

Mon 1/5

6:05 pm-10:52 pm

1 stop6h 47m

$305

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Mon 12/22

5:20 pm-12:10 am

1 stop4h 50m

San Antonio

Mon 1/5

5:30 pm-8:35 pm

1 stop5h 05m

$305

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

Tue 11/4

4:35 pm-12:31 am

1 stop5h 56m

San Antonio

Mon 11/10

5:59 pm-11:52 pm

1 stop7h 53m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 21 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 October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San Antonio flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 65 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

4,235 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,235 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

8,974 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.2

Good

11,045 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Spirit Airlines

6.3

Okay

8,092 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Frontier

5.8

Fair

3,136 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

How long is the flight from Ontario to San Antonio?
For as low as $169, Frontier can have you in San Antonio from Ontario in 33h 43m. The distance between Ontario and San Antonio is about 1163 mi.
What are the cheapest airlines flying from Ontario to San Antonio round-trip?
According to our current data, Frontier ($107), Spirit Airlines ($116), and Delta ($200) offers the cheapest pricing from Ontario to San Antonio. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.
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$107	Average$216	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$116	Average$168	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$200	Average$367	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$236	Average$389	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$261	Average$388	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$270	Average$406	FlexibilityNo cancel fee	On-time69%

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$54+ 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 12/13. 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 65 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap 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

Find 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 October 14, 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 October 14, 2025.

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 October.

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 fastest layover option 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?

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 October 14, 2025.