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Cheap flights from San Antonio to Los Angeles from $108

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 6/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Frontier Logo
7:54 pm - 11:49 pm
SAT
-
ONT
5h 55m
1 stop
Frontier Logo
11:51 am - 8:14 pm
ONT
-
SAT
6h 23m
1 stop
$217Frontier
ma, jun. 1 - do, jun. 4
Frontier Logo
7:54 pm - 11:49 pm
SAT
-
ONT
5h 55m
1 stop
Frontier Logo
10:50 am - 6:59 pm
ONT
-
SAT
6h 09m
1 stop
$218Frontier
wo, mei. 27 - za, mei. 30
Frontier Logo
7:54 pm - 11:49 pm
SAT
-
ONT
5h 55m
1 stop
Frontier Logo
11:51 am - 8:14 pm
ONT
-
SAT
6h 23m
1 stop
$220Frontier
ma, jun. 1 - ma, jun. 8
Frontier Logo
7:54 pm - 11:49 pm
SAT
-
ONT
5h 55m
1 stop
Frontier Logo
10:50 am - 6:56 pm
ONT
-
SAT
6h 06m
1 stop
$221Frontier
do, jun. 4 - wo, jun. 10
Frontier Logo
8:59 pm - 8:04 am
SAT
-
ONT
13h 05m
1 stop
Frontier Logo
11:51 am - 8:14 pm
ONT
-
SAT
6h 23m
1 stop
$224Frontier
za, mei. 30 - za, jun. 6
Frontier Logo
7:51 pm - 11:49 pm
SAT
-
ONT
5h 58m
1 stop
Frontier Logo
3:34 pm - 8:11 pm
ONT
-
SAT
26h 37m
1 stop
$225Frontier
za, jun. 13 - wo, jun. 17
Frontier Logo
8:59 pm - 8:04 am
SAT
-
ONT
13h 05m
1 stop
Frontier Logo
11:51 am - 8:14 pm
ONT
-
SAT
6h 23m
1 stop
$226Frontier
za, mei. 30 - za, jun. 6
Frontier Logo
8:59 pm - 7:53 pm
SAT
-
ONT
24h 54m
1 stop
Frontier Logo
11:43 am - 8:14 pm
ONT
-
SAT
6h 31m
1 stop
$228Frontier
wo, jul. 8 - za, jul. 11
Frontier Logo
7:51 pm - 10:05 am
SAT
-
ONT
16h 14m
1 stop
Frontier Logo
6:00 am - 6:56 pm
ONT
-
SAT
10h 56m
1 stop
$230Frontier
za, aug. 22 - ma, aug. 24
Frontier Logo
8:59 pm - 8:04 am
SAT
-
ONT
13h 05m
1 stop
Frontier Logo
10:50 am - 6:59 pm
ONT
-
SAT
6h 09m
1 stop
$234Frontier
wo, mei. 20 - do, mei. 28

Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Jun 1
SAT7:54 pmSan Antonio
5h 55m
1 stop
ONT11:49 pmOntario
Jun 4
ONT11:51 amOntario
6h 23m
1 stop
SAT8:14 pmSan Antonio
$217
Frontier
May 27
SAT7:54 pmSan Antonio
5h 55m
1 stop
ONT11:49 pmOntario
May 30
ONT10:50 amOntario
6h 09m
1 stop
SAT6:59 pmSan Antonio
$218
Frontier
Jun 1
SAT7:54 pmSan Antonio
5h 55m
1 stop
ONT11:49 pmOntario
Jun 8
ONT11:51 amOntario
6h 23m
1 stop
SAT8:14 pmSan Antonio
$220

United Airlines flights from San Antonio to Ontario

Our best United Airlines deals on San Antonio to Ontario flight tickets
United Airlines
May 21
SAT1:39 pmSan Antonio
5h 49m
1 stop
ONT5:28 pmOntario
May 25
ONT1:18 pmOntario
5h 36m
1 stop
SAT8:54 pmSan Antonio
$527
United Airlines
May 21
SAT5:30 amSan Antonio
8h 42m
2 stops
ONT12:12 pmOntario
May 25
ONT5:45 amOntario
7h 54m
1 stop
SAT3:39 pmSan Antonio
$532

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 mei 10, 2026.
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

Cheapest round-trip

San AntonioOntario

SAT - ONT

SATONT

San Antonio

ma 6/1

7:54 pm-11:49 pm

1 stop5h 55m

Ontario

do 6/4

11:51 am-8:14 pm

1 stop6h 23m

$217

San AntonioOntario

SAT - ONT

SATONT

San Antonio

wo 5/27

7:54 pm-11:49 pm

1 stop5h 55m

Ontario

za 5/30

10:50 am-6:59 pm

1 stop6h 09m

$218

San AntonioOntario

SAT - ONT

SATONT

San Antonio

ma 6/1

7:54 pm-11:49 pm

1 stop5h 55m

Ontario

ma 6/8

11:51 am-8:14 pm

1 stop6h 23m

$220
Quickest round-trip

San AntonioOntario

SAT - ONT

SATONT

San Antonio

do 6/4

7:54 pm-11:49 pm

1 stop5h 55m

Ontario

wo 6/10

10:50 am-6:56 pm

1 stop6h 06m

$221

San AntonioOntario

SAT - ONT

SATONT

San Antonio

za 5/30

8:59 pm-8:04 am

1 stop13h 05m

Ontario

za 6/6

11:51 am-8:14 pm

1 stop6h 23m

$224

San AntonioOntario

SAT - ONT

SATONT

San Antonio

za 6/13

7:51 pm-11:49 pm

1 stop5h 58m

Ontario

wo 6/17

3:34 pm-8:11 pm

1 stop26h 37m

$225

San AntonioOntario

SAT - ONT

SATONT

San Antonio

za 5/30

8:59 pm-8:04 am

1 stop13h 05m

Ontario

za 6/6

11:51 am-8:14 pm

1 stop6h 23m

$226

San AntonioOntario

SAT - ONT

SATONT

San Antonio

wo 7/8

8:59 pm-7:53 pm

1 stop24h 54m

Ontario

za 7/11

11:43 am-8:14 pm

1 stop6h 31m

$228

San AntonioOntario

SAT - ONT

SATONT

San Antonio

za 8/22

7:51 pm-10:05 am

1 stop16h 14m

Ontario

ma 8/24

6:00 am-6:56 pm

1 stop10h 56m

$230

San AntonioOntario

SAT - ONT

SATONT

San Antonio

wo 5/20

8:59 pm-8:04 am

1 stop13h 05m

Ontario

do 5/28

10:50 am-6:59 pm

1 stop6h 09m

$234

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 typical price of a round-trip flight between San Antonio and Ontario?

What is the cheapest month to fly to Ontario?

In general, November 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 $273. If you aren’t able to travel during the month of November, then book flights to Ontario from San Antonio during August instead. Flights to Ontario in August, while not as cheap as those in November, still average around $285.

How far in advance should I book a flight from San Antonio 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 $360 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 $287 on momondo.

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

As of May 2026, prices for San Antonio to Ontario flights are approximately 10% cheaper 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

Fastest flight time

5h 55m

Direct flights

None
The fastest flight from San Antonio to Ontario takes 5h 55m
There are no direct flights from San Antonio to Ontario. There are no popular flight routes from San Antonio to Ontario.
Search flight deals

Frequently asked questions about flying from San Antonio to Ontario

  • 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 5h 55m 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 $153Free CancellationRating
5.6
2,958 reviews
Search Frontier flights
American AirlinesPriceFrom $273Free CancellationRating
7.1
11,668 reviews
Search American Airlines flights
SouthwestPriceFrom $295Free CancellationRating
8.0
4,303 reviews
Search Southwest flights
United AirlinesPriceFrom $307Free CancellationRating
7.4
9,696 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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