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Cheap flights from San Antonio to Los Angeles from $79

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 5/6. 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
1 adult, Economy, 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
4:49 pm - 7:31 am
SAT
-
ONT
16h 42m
1 stop
Frontier Logo
12:59 am - 3:53 pm
ONT
-
SAT
12h 54m
1 stop
$159Frontier
Wed, Apr 22 - Tue, Apr 28
Frontier Logo
4:49 pm - 11:55 pm
SAT
-
ONT
9h 06m
1 stop
Frontier Logo
10:50 am - 6:59 pm
ONT
-
SAT
6h 09m
1 stop
$160Frontier
Wed, Apr 29 - Tue, May 5
Frontier Logo
6:31 pm - 7:32 pm
SAT
-
ONT
27h 01m
1 stop
Frontier Logo
6:00 am - 6:59 pm
ONT
-
SAT
10h 59m
1 stop
$171Frontier
Mon, May 4 - Wed, May 13
Frontier Logo
7:45 am - 11:56 pm
SAT
-
ONT
18h 11m
1 stop
Frontier Logo
11:44 am - 11:40 am
ONT
-
SAT
21h 56m
1 stop
$179Frontier
Tue, Apr 7 - Wed, Apr 15
Frontier Logo
4:04 pm - 11:55 pm
SAT
-
ONT
9h 51m
1 stop
Frontier Logo
12:59 am - 2:15 pm
ONT
-
SAT
11h 16m
1 stop
$180Frontier
Tue, Apr 14 - Thu, Apr 16
Frontier Logo
3:00 pm - 11:55 pm
SAT
-
ONT
10h 55m
1 stop
Frontier Logo
11:47 am - 11:40 am
ONT
-
SAT
21h 53m
1 stop
$182Frontier
Fri, Apr 17 - Thu, Apr 23
Frontier Logo
11:38 am - 8:04 am
SAT
-
ONT
22h 26m
1 stop
Frontier Logo
12:59 am - 3:53 pm
ONT
-
SAT
12h 54m
1 stop
$191Frontier
Sun, Apr 5 - Tue, Apr 14
Frontier Logo
7:45 am - 11:56 pm
SAT
-
ONT
18h 11m
1 stop
Frontier Logo
11:00 am - 10:43 am
ONT
-
SAT
21h 43m
1 stop
$199Frontier
Tue, Apr 7 - Thu, Apr 9
Frontier Logo
4:04 pm - 7:26 am
SAT
-
ONT
17h 22m
1 stop
Frontier Logo
12:59 am - 3:09 pm
ONT
-
SAT
12h 10m
1 stop
$200Frontier
Sat, Apr 18 - Mon, Apr 20
Frontier Logo
11:38 am - 8:07 pm
SAT
-
ONT
10h 29m
1 stop
Frontier Logo
12:59 am - 2:15 pm
ONT
-
SAT
11h 16m
1 stop
$201Frontier
Mon, Apr 13 - Wed, Apr 15

Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Apr 22
SAT4:49 pmSan Antonio
9h 06m
1 stop
ONT11:55 pmOntario
Apr 28
ONT12:59 amOntario
12h 54m
1 stop
SAT3:53 pmSan Antonio
$159
Frontier
Apr 29
SAT4:49 pmSan Antonio
9h 06m
1 stop
ONT11:55 pmOntario
May 5
ONT6:00 amOntario
10h 59m
1 stop
SAT6:59 pmSan Antonio
$160
Frontier
May 4
SAT6:31 pmSan Antonio
27h 01m
1 stop
ONT7:32 pmOntario
May 13
ONT6:00 amOntario
10h 59m
1 stop
SAT6:59 pmSan Antonio
$171

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 March 24, 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

Wed 4/22

4:49 pm-7:31 am

1 stop16h 42m

Ontario

Tue 4/28

12:59 am-3:53 pm

1 stop12h 54m

$159
Quickest round-trip

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Wed 4/29

4:49 pm-11:55 pm

1 stop9h 06m

Ontario

Tue 5/5

10:50 am-6:59 pm

1 stop6h 09m

$160

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 5/4

6:31 pm-7:32 pm

1 stop27h 01m

Ontario

Wed 5/13

6:00 am-6:59 pm

1 stop10h 59m

$171

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 4/7

7:45 am-11:56 pm

1 stop18h 11m

Ontario

Wed 4/15

11:44 am-11:40 am

1 stop21h 56m

$179

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 4/14

4:04 pm-11:55 pm

1 stop9h 51m

Ontario

Thu 4/16

12:59 am-2:15 pm

1 stop11h 16m

$180

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Fri 4/17

3:00 pm-11:55 pm

1 stop10h 55m

Ontario

Thu 4/23

11:47 am-11:40 am

1 stop21h 53m

$182

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sun 4/5

11:38 am-8:04 am

1 stop22h 26m

Ontario

Tue 4/14

12:59 am-3:53 pm

1 stop12h 54m

$191

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 4/7

7:45 am-11:56 pm

1 stop18h 11m

Ontario

Thu 4/9

11:00 am-10:43 am

1 stop21h 43m

$199

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Sat 4/18

4:04 pm-7:26 am

1 stop17h 22m

Ontario

Mon 4/20

12:59 am-3:09 pm

1 stop12h 10m

$200

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Mon 4/13

11:38 am-8:07 pm

1 stop10h 29m

Ontario

Wed 4/15

12:59 am-2:15 pm

1 stop11h 16m

$201

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, 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 $275.

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 $344 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 March 2026, prices for San Antonio to Ontario flights are approximately 140% 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

Fastest flight time

5h 42m

Direct flights

None
The fastest flight from San Antonio to Ontario takes 5h 42m
There are no direct flights from San Antonio to Ontario. There are no popular flight routes from San Antonio to Ontario.
Search flight deals

  • 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 42m 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 $152Free CancellationRating
5.7
3,018 reviews
Search Frontier flights
American AirlinesPriceFrom $273Free CancellationRating
7.1
11,491 reviews
Search American Airlines flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,331 reviews
Search Southwest flights
United AirlinesPriceFrom $307Free CancellationRating
7.4
9,470 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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