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Cheap flights from San Antonio to Los Angeles from $52

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Los Angeles departing on 11/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Antonio to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:23 pm - 8:42 pmSAT-ONT
7h 19m1 stop
Multiple Airlines Logo
8:00 am - 3:35 pmONT-SAT
5h 35m1 stop
$120Multiple Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15
Multiple Airlines Logo
3:23 pm - 8:42 pmSAT-ONT
7h 19m1 stop
Multiple Airlines Logo
4:05 pm - 2:17 pmONT-SAT
20h 12m1 stop
$135Multiple Airlines
Find Deal
Wed, Nov 12 - Fri, Nov 14
Frontier Logo
3:12 pm - 11:50 pmSAT-ONT
10h 38m1 stop
Frontier Logo
12:05 pm - 7:30 pmONT-SAT
29h 25m1 stop
$137Frontier
Find Deal
Sat, Nov 8 - Sat, Nov 15
Multiple Airlines Logo
6:45 am - 8:42 pmSAT-ONT
15h 57m2 stops
Multiple Airlines Logo
8:00 am - 3:35 pmONT-SAT
5h 35m1 stop
$139Multiple Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15
Multiple Airlines Logo
3:12 pm - 11:50 pmSAT-ONT
10h 38m1 stop
Multiple Airlines Logo
10:43 pm - 11:45 pmONT-SAT
23h 02m2 stops
$144Multiple Airlines
Find Deal
Sat, Nov 8 - Mon, Nov 10
Frontier Logo
8:25 pm - 11:50 pmSAT-ONT
5h 25m1 stop
Frontier Logo
6:00 am - 1:19 pmONT-SAT
5h 19m1 stop
$160Frontier
Find Deal
Mon, Nov 3 - Thu, Nov 6
Frontier Logo
3:12 pm - 12:10 pmSAT-ONT
22h 58m1 stop
Frontier Logo
6:53 am - 7:30 pmONT-SAT
10h 37m1 stop
$162Frontier
Find Deal
Sat, Nov 1 - Mon, Nov 3
Frontier Logo
8:25 pm - 11:50 pmSAT-ONT
5h 25m1 stop
Frontier Logo
6:53 am - 7:30 pmONT-SAT
10h 37m1 stop
$164Frontier
Find Deal
Fri, Nov 14 - Sun, Nov 16
Frontier Logo
8:25 pm - 11:50 pmSAT-ONT
5h 25m1 stop
Frontier Logo
6:53 am - 7:30 pmONT-SAT
10h 37m1 stop
$166Frontier
Find Deal
Fri, Nov 14 - Sun, Nov 16
American Airlines Logo
6:00 am - 8:53 amSAT-ONT
4h 53m1 stop
American Airlines Logo
11:59 pm - 8:22 amONT-SAT
6h 23m1 stop
$239American Airlines
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Mon, Dec 8 - Thu, Dec 11

Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Nov 8
SAT3:12 pmSan Antonio
10h 38m
1 stop
ONT11:50 pmOntario
Nov 15
ONT12:05 pmOntario
29h 25m
1 stop
SAT7:30 pmSan Antonio
$137
Find similar
Frontier
Nov 3
SAT8:25 pmSan Antonio
5h 25m
1 stop
ONT11:50 pmOntario
Nov 6
ONT6:00 amOntario
5h 19m
1 stop
SAT1:19 pmSan Antonio
$160
Find similar
Frontier
Nov 1
SAT3:12 pmSan Antonio
22h 58m
1 stop
ONT12:10 pmOntario
Nov 3
ONT6:53 amOntario
10h 37m
1 stop
SAT7:30 pmSan Antonio
$162
Find similar

United Airlines flights from San Antonio to Ontario

Our best United Airlines deals on San Antonio to Ontario flight tickets
United Airlines
Oct 22
SAT9:00 amSan Antonio
5h 51m
1 stop
ONT12:51 pmOntario
Oct 31
ONT5:05 amOntario
5h 51m
1 stop
SAT12:56 pmSan Antonio
$506
Find similar
United Airlines
Oct 30
SAT8:39 amSan Antonio
5h 54m
1 stop
ONT12:33 pmOntario
Apr 4
ONT5:00 amOntario
6h 05m
1 stop
SAT1:05 pmSan Antonio
$517
Find similar
United Airlines
Oct 30
SAT8:39 amSan Antonio
10h 55m
2 stops
ONT5:34 pmOntario
Nov 3
ONT6:38 pmOntario
12h 10m
2 stops
SAT8:48 amSan Antonio
$526
Find similar

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from San Antonio to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Wed 11/12

3:23 pm-8:42 pm

1 stop7h 19m

Ontario

Sat 11/15

8:00 am-3:35 pm

1 stop5h 35m

$120

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Wed 11/12

3:23 pm-8:42 pm

1 stop7h 19m

Ontario

Fri 11/14

4:05 pm-2:17 pm

1 stop20h 12m

$135

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sat 11/8

3:12 pm-11:50 pm

1 stop10h 38m

Ontario

Sat 11/15

12:05 pm-7:30 pm

1 stop29h 25m

$137

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Wed 11/12

6:45 am-8:42 pm

2 stops15h 57m

Ontario

Sat 11/15

8:00 am-3:35 pm

1 stop5h 35m

$139

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sat 11/8

3:12 pm-11:50 pm

1 stop10h 38m

Ontario

Mon 11/10

10:43 pm-11:45 pm

2 stops23h 02m

$144

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 11/3

8:25 pm-11:50 pm

1 stop5h 25m

Ontario

Thu 11/6

6:00 am-1:19 pm

1 stop5h 19m

$160

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sat 11/1

3:12 pm-12:10 pm

1 stop22h 58m

Ontario

Mon 11/3

6:53 am-7:30 pm

1 stop10h 37m

$162

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Fri 11/14

8:25 pm-11:50 pm

1 stop5h 25m

Ontario

Sun 11/16

6:53 am-7:30 pm

1 stop10h 37m

$164

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Fri 11/14

8:25 pm-11:50 pm

1 stop5h 25m

Ontario

Sun 11/16

6:53 am-7:30 pm

1 stop10h 37m

$166

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 12/8

6:00 am-8:53 am

1 stop4h 53m

Ontario

Thu 12/11

11:59 pm-8:22 am

1 stop6h 23m

$239

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from San Antonio to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from San Antonio to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. If you aren’t able to travel during the month of February, then book flights to Ontario from San Antonio during August instead. Flights to Ontario in August, while not as cheap as those in February, still average around $285.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $277. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Ontario for around $359.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from San Antonio to Ontario when you can find flight prices for as low as $241. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $356 on average. Flights to Ontario from San Antonio in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Ontario from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $347 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from San Antonio for as low as $186 on momondo.

How have San Antonio to Ontario flight prices changed over time?

As of October 2025, prices for San Antonio to Ontario flights are approximately 42% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Ontario (SAT to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Ontario

Direct flights

None
There are no direct flights from San Antonio to Ontario. There are no popular flight routes from San Antonio to Ontario.
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  • How far is San Antonio to Ontario by plane?

    The distance between San Antonio and Ontario is about 1167.5 mi. Typically, this will take 4h 53m by plane in normal conditions.

  • When did momondo last update prices for flights from San Antonio Airport to Ontario Airport?

    Prices for flights from San Antonio Airport to Ontario Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Antonio Airport to Ontario Airport?

  • How old do you have to be to fly from San Antonio Airport to Ontario Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Antonio Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Antonio to Ontario?

Best airlines flying from San Antonio to Ontario

Compare and see reviews for airlines that fly from San Antonio to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $115Free CancellationRating
5.8
3,137 reviews
Search Frontier flights
DeltaPriceFrom $158Free CancellationRating
7.9
7,984 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
SouthwestPriceFrom $295Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Ontario?

Finding the right flight to Ontario from San Antonio is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

Can I find flights from San Antonio to Ontario with flexible booking policies on momondo?

Yes. All flights to Ontario from San Antonio on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Antonio to Ontario?

Once all potential San Antonio to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Antonio to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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