HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$60+ 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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SAT
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

The best prices from Ontario to San Antonio are usually found in January or February, booked 59 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Ontario to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 21, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

April

Cheapest in

January

Round-trip from

$123
(FlightHub)

One-way from

$60
(Frontier)
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
High demand for flights, 17% potential price rise
Search Deals
Best time to find cheap flights, 19% potential price drop
Search Deals
From Ontario to San Antonio
Search Deals
One-way flight from Ontario to San Antonio
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 noviembre 21, 2024.

This Frontier deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/128:59 pmONT - SAT
1 stop20h 31mFrontier
lun. 12/168:30 pmSAT - ONT
1 stop12h 39mFrontier
Deal found 11/20$130
This eDestinos deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2810:40 pmONT - SAT
1 stop11h 43mMultiple Airlines
lun. 12/210:30 amSAT - ONT
1 stop8h 28mMultiple Airlines
Deal found 11/21$276
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1210:00 pmONT - SAT
1 stop9h 52mDelta
sáb. 12/146:50 amSAT - ONT
1 stop7h 37mDelta
Deal found 11/20$317
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/246:10 amONT - SAT
1 stop5h 19mAmerican Airlines
dom. 12/295:45 amSAT - ONT
1 stop5h 27mAmerican Airlines
Deal found 11/20$332
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/245:05 amONT - SAT
1 stop5h 50mUnited Airlines
mar. 12/314:45 pmSAT - ONT
1 stop6h 04mUnited Airlines
Deal found 11/19$402
This Southwest deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/2412:20 pmONT - SAT
2 stops8h 30mSouthwest
dom. 12/295:10 amSAT - ONT
1 stop5h 50mSouthwest
Deal found 11/20$411
This Alaska Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/127:00 amONT - SAT
2 stops20h 30mAlaska Airlines
dom. 12/157:00 amSAT - ONT
1 stop18h 59mAlaska Airlines
Deal found 11/19$467

Find flights from Ontario to San Antonio within your budget

Customize your flight search to find flights from Ontario to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

jue. 1/23

8:11 pm-12:02 pm

1 stop13h 51m

San Antonio

dom. 1/26

8:20 pm-7:11 am

1 stop12h 51m

$123

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

mar. 2/11

4:25 pm-11:47 pm

1 stop5h 22m

San Antonio

sáb. 2/15

2:32 pm-6:35 pm

1 stop6h 03m

$316

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

mar. 1/28

1:00 pm-12:32 am

1 stop9h 32m

San Antonio

jue. 1/30

7:25 pm-11:53 pm

1 stop6h 28m

$317

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

mar. 1/7

6:00 am-3:42 pm

1 stop7h 42m

San Antonio

vie. 1/10

8:49 am-8:29 pm

2 stops13h 40m

$336

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

mié. 2/26

6:00 am-2:07 pm

1 stop30h 07m

San Antonio

lun. 3/3

3:03 pm-11:24 pm

1 stop10h 21m

$354

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

dom. 5/4

6:15 am-4:55 pm

1 stop8h 40m

San Antonio

mié. 5/7

6:50 am-12:20 pm

2 stops7h 30m

$391

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

dom. 12/15

7:00 am-5:30 am

2 stops20h 30m

San Antonio

jue. 12/19

3:31 pm-11:59 pm

1 stop10h 28m

$415

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

dom. 1/19

12:58 am-3:21 pm

1 stop12h 23m

San Antonio

lun. 1/27

4:36 pm-11:01 pm

1 stop8h 25m

$554

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

jue. 1/9

7:59 am-7:29 pm

1 stop9h 30m

$60

OntarioSan Antonio

ONT - SAT

ONTSAT

Ontario

jue. 11/28

1:18 pm-9:33 pm

1 stop6h 15m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 16 results
1
2

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars

*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.

Travel insights for flights from Ontario to San Antonio

Get recent, data-driven insights about flights from Ontario to San Antonio including ideal travel times, pricing trends, and more.

How far ahead should I 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 November 15, 2024.

The best time to book flights from Ontario to San Antonio is 59 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, August is the cheapest month in which you can book a flight from Ontario to San Antonio (average of $295). 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.

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

Find hourly flight availability from Ontario to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 21, 2024.

It’s typically best to fly out from Ontario to San Antonio in the evening. Doing so could potentially save you 25% 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?

Use this chart to determine the cheapest time to fly round-trip from Ontario to San Antonio. Price data was last updated on November 18, 2024.

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.

Rainfall in San Antonio by month

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

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.

Temperature in San Antonio by month

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

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).

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated noviembre 21, 2024.
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
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Alaska Airlines
8.0
Very good
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Delta
8.0
Very good
8,759 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

United Airlines
7.4
Good
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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.

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

    According to our current data, Frontier ($123), American Airlines ($316), and Delta ($317) offers the cheapest pricing from Ontario to San Antonio. Frontier is 63% 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 ($60), Delta ($163), and Alaska Airlines ($177).

  • 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, August is the cheapest month in which you can book a flight from Ontario to San Antonio (average of $295). 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

Toggle through the tabs below to find thousands of 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
Ontario to Dallas/Fort Worth flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Hobby flights
Los Angeles to George Bush Intcntl flights
Burbank to Dallas/Fort Worth flights
Los Angeles to Austin flights
San Jose to Dallas/Fort Worth flights
Santa Ana to Dallas/Fort Worth flights
San Francisco to Hobby flights
Ontario to Hobby flights
San Francisco to Austin flights
Los Angeles to Love Field flights
Ontario to George Bush Intcntl flights
San Francisco to George Bush Intcntl flights
Santa Ana to Hobby flights
Oakland to Dallas/Fort Worth flights
Las Vegas to Dallas/Fort Worth flights
San Diego to Dallas/Fort Worth flights
Santa Ana to George Bush Intcntl flights
Los Angeles to San Antonio flights
Burbank to Hobby flights
San Jose to Hobby flights
Ontario to Austin flights
Sacramento to Hobby flights
Burbank to George Bush Intcntl flights
San Jose to George Bush Intcntl flights
San Diego to Hobby flights
Oakland to Hobby flights
Ontario to Love Field flights
San Francisco to Love Field flights
Sacramento to Dallas/Fort Worth flights
Las Vegas to Hobby flights
San Diego to Austin flights
San Francisco to San Antonio flights
Oakland to George Bush Intcntl flights
San Diego to George Bush Intcntl flights
Sacramento to George Bush Intcntl flights
Santa Ana to Austin flights
Las Vegas to George Bush Intcntl flights
Las Vegas to Love Field flights
San Jose to Austin flights
Burbank to San Antonio flights
Los Angeles to El Paso flights
Santa Ana to San Antonio flights
Fresno to Dallas/Fort Worth flights
San Jose to Love Field flights
Oakland to Austin flights
Sacramento to Austin flights

Top 6 airlines flying from Ontario to San Antonio

Discover the top 6 airlines that operate flights from Ontario to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$82Average$163FlexibilityNo cancel feeOn-time65%
FrontierCheapest$117Average$195FlexibilityNo cancel feeOn-time62%
DeltaCheapest$236Average$386FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$274Average$408FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$285Average$401FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$326Average$404FlexibilityNo cancel feeOn-time63%
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