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$55+ Cheap flights from San Antonio to Ontario (SAT - ONT)

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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — ONT
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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The best prices from San Antonio to Ontario are usually found in August or May, booked 56 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from San Antonio to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Ontario (ONT). 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 January 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$120
(Booking.com)

One-way from

$55
(Cheapflightsfares)

Popular in

October

Cheapest in

August

Average price

$341
Provider with most accurate pricing for San Antonio-Ontario flight deals.
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Provider most trusted by Cheapflights users for San Antonio-Ontario flights.
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From San Antonio to Ontario
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One-way flight from San Antonio to Ontario
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High demand for flights, 4% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from San Antonio to Ontario

Cheapest flights from San Antonio to Ontario
Explore the most affordable flight options available from San Antonio to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.

This Booking.com deal was found by Cheapflights users on 1/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/68:20 pmSAT - ONT
1 stop23h 37mFrontier
Sat 2/86:45 amONT - SAT
1 stop27h 17mFrontier
Deal found 1/14$120
This American Airlines deal was found by Cheapflights users on 1/15. 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.
Sat 2/82:28 pmSAT - ONT
1 stop7h 03mAmerican Airlines
Tue 2/1112:48 pmONT - SAT
1 stop5h 34mAmerican Airlines
Deal found 1/15$217
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Thu 2/612:05 pmSAT - ONT
2 stops10h 24mUnited Airlines
Sat 2/86:00 amONT - SAT
1 stop7h 42mUnited Airlines
Deal found 1/14$232
This Delta deal was found by Cheapflights users on 1/15. 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.
Fri 2/77:25 pmSAT - ONT
1 stop6h 26mDelta
Mon 2/101:00 pmONT - SAT
1 stop9h 27mDelta
Deal found 1/15$257
This Southwest deal was found by Cheapflights users on 1/15. 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.
Sat 2/158:50 amSAT - ONT
2 stops7h 35mSouthwest
Tue 2/183:30 pmONT - SAT
1 stop4h 50mSouthwest
Deal found 1/15$373
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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.
Mon 2/243:03 pmSAT - ONT
1 stop21h 59mAlaska Airlines
Thu 2/277:14 pmONT - SAT
1 stop16h 53mAlaska Airlines
Deal found 1/16$532
This Orbitz deal was found by Cheapflights users on 1/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/132:18 pmSAT - ONT
1 stop11h 41mMultiple Airlines
Thu 4/1710:18 amONT - SAT
2 stops17h 22mMultiple Airlines
Deal found 1/15$554

Find flights from San Antonio to Ontario within your budget

Customize your flight search to find flights from San Antonio to Ontario 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 2,558,603 searches. Data last updated January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Thu 2/6

8:20 pm-5:57 pm

1 stop23h 37m

Ontario

Sat 2/8

6:45 am-12:02 pm

1 stop27h 17m

$120

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sat 2/8

2:28 pm-7:31 pm

1 stop7h 03m

Ontario

Tue 2/11

12:48 pm-8:22 pm

1 stop5h 34m

$217

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Thu 2/6

12:05 pm-8:29 pm

2 stops10h 24m

Ontario

Sat 2/8

6:00 am-3:42 pm

1 stop7h 42m

$232

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Fri 2/7

7:25 pm-11:51 pm

1 stop6h 26m

Ontario

Mon 2/10

1:00 pm-12:27 am

1 stop9h 27m

$257

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sat 2/15

8:50 am-2:25 pm

2 stops7h 35m

Ontario

Tue 2/18

3:30 pm-10:20 pm

1 stop4h 50m

$373

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 2/24

3:03 pm-11:02 am

1 stop21h 59m

Ontario

Thu 2/27

7:14 pm-2:07 pm

1 stop16h 53m

$532

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sun 4/13

2:18 pm-11:59 pm

1 stop11h 41m

Ontario

Thu 4/17

10:18 am-5:40 am

2 stops17h 22m

$554

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 3/17

5:28 pm-8:45 pm

1 stop5h 17m

$55

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 2/10

5:30 am-11:50 am

1 stop8h 20m

$129

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 2/11

4:50 pm-8:51 pm

1 stop6h 01m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 12 results
1
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Compare providers for flights from San Antonio to Ontario

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 San Antonio to Ontario in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice 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 San Antonio-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Ontario 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 San Antonio-Ontario 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 San Antonio to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Antonio 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 San Antonio to Ontario

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Ontario. Price data was last updated on January 10, 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Antonio to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from San Antonio to Ontario (average of $246). Flying from San Antonio to Ontario in March is currently the most expensive (average of $311). 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 SAT to ONT?

Find hourly flight availability from San Antonio to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 17, 2025.

One of the essential ways to save on airfare from San Antonio to Ontario is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 33% on airfare.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated January 17, 2025.
To help decide which airline to fly from San Antonio to Ontario, see what other customers have to say about Frontier, United Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,965 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

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

  • What airports do I use to fly from San Antonio to Ontario?

    Ontario is the airport most travelers will use when flying to Ontario from San Antonio. Booking flights from San Antonio (SAT) to Ontario (ONT) should be relatively easy as there is 1 daily flight to Ontario from 6 different airlines. 5h 04m is how long a flight from San Antonio to Ontario will take if you book a nonstop flight.

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

    Our cheapest airline available from San Antonio to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $120 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $217 and $232 round-trip. Users have found that Frontier is 64% cheaper than the other options available to this destination.

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

    $55 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $129 and $149, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to Ontario 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 San Antonio to Ontario?

    Currently, August is the cheapest month in which you can book a flight from San Antonio to Ontario (average of $246). Flying from San Antonio to Ontario in March is currently the most expensive (average of $311). 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

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Top 6 airlines flying from San Antonio to Ontario

Discover the top 6 airlines that operate flights from San Antonio to Ontario. 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 2,558,603 searches. Data last updated January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$73Average$166FlexibilityNo cancel feeOn-time65%
FrontierCheapest$144Average$216FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$432FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$280Average$387FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$326Average$474FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$331Average$416FlexibilityNo cancel feeOn-time63%
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