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Cheap flights from San Antonio to Los Angeles from $103

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 8/11. 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

Discover deals from 900+ travel sites with momondo.

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
7:39 pm - 11:50 pm
SAT
-
ONT
6h 11m
1 stop
Frontier Logo
10:49 am - 6:44 pm
ONT
-
SAT
5h 55m
1 stop
$205Frontier
Tue, Jul 21 - Tue, Jul 28
Frontier Logo
7:49 pm - 10:04 am
SAT
-
ONT
16h 15m
1 stop
Frontier Logo
6:00 am - 6:54 pm
ONT
-
SAT
10h 54m
1 stop
$208Frontier
Tue, Aug 11 - Wed, Sep 2
Frontier Logo
7:49 pm - 11:50 pm
SAT
-
ONT
6h 01m
1 stop
Frontier Logo
1:38 pm - 8:37 pm
ONT
-
SAT
4h 59m
1 stop
$210Frontier
Tue, Aug 11 - Wed, Aug 12
Frontier Logo
7:39 pm - 10:04 am
SAT
-
ONT
16h 25m
1 stop
Frontier Logo
1:38 pm - 8:37 pm
ONT
-
SAT
4h 59m
1 stop
$218Frontier
Tue, Jul 28 - Wed, Aug 5
Frontier Logo
7:49 pm - 11:55 pm
SAT
-
ONT
6h 06m
1 stop
Frontier Logo
9:49 pm - 9:39 pm
ONT
-
SAT
21h 50m
1 stop
$220Frontier
Wed, Aug 19 - Wed, Sep 16
Frontier Logo
9:32 pm - 3:14 pm
SAT
-
ONT
19h 42m
1 stop
Frontier Logo
1:38 pm - 8:37 pm
ONT
-
SAT
4h 59m
1 stop
$226Frontier
Tue, Jul 28 - Tue, Aug 11
Frontier Logo
7:39 pm - 11:50 pm
SAT
-
ONT
6h 11m
1 stop
Frontier Logo
1:38 pm - 8:37 pm
ONT
-
SAT
4h 59m
1 stop
$227Frontier
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
9:32 pm - 3:14 pm
SAT
-
ONT
19h 42m
1 stop
Frontier Logo
1:38 pm - 8:37 pm
ONT
-
SAT
4h 59m
1 stop
$228Frontier
Tue, Jul 14 - Tue, Jul 21
Frontier Logo
9:32 pm - 3:14 pm
SAT
-
ONT
19h 42m
1 stop
Frontier Logo
3:40 pm - 8:37 pm
ONT
-
SAT
26h 57m
1 stop
$230Frontier
Tue, Jul 14 - Tue, Jul 28
Frontier Logo
7:49 pm - 11:55 pm
SAT
-
ONT
6h 06m
1 stop
Frontier Logo
6:00 am - 6:54 pm
ONT
-
SAT
10h 54m
1 stop
$231Frontier
Thu, Sep 3 - Tue, Sep 8

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Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Jul 21
SAT7:39 pmSan Antonio
6h 11m
1 stop
ONT11:50 pmOntario
Jul 28
ONT10:49 amOntario
5h 55m
1 stop
SAT6:44 pmSan Antonio
$205
Frontier
Aug 11
SAT7:49 pmSan Antonio
16h 15m
1 stop
ONT10:04 amOntario
Sep 2
ONT6:00 amOntario
10h 54m
1 stop
SAT6:54 pmSan Antonio
$208
Frontier
Aug 11
SAT7:49 pmSan Antonio
6h 01m
1 stop
ONT11:50 pmOntario
Aug 12
ONT1:38 pmOntario
4h 59m
1 stop
SAT8:37 pmSan Antonio
$210

United Airlines flights from San Antonio to Ontario

Our best United Airlines deals on San Antonio to Ontario flight tickets
United Airlines
Jul 1
SAT5:57 pmSan Antonio
5h 58m
1 stop
ONT9:55 pmOntario
Jul 8
ONT5:00 amOntario
8h 39m
2 stops
SAT3:39 pmSan Antonio
$462
United Airlines
Jul 1
SAT4:18 pmSan Antonio
7h 37m
1 stop
ONT9:55 pmOntario
Jul 4
ONT5:45 amOntario
5h 32m
1 stop
SAT1:17 pmSan Antonio
$477

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 June 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

Tue 7/21

7:39 pm-11:50 pm

1 stop6h 11m

Ontario

Tue 7/28

10:49 am-6:44 pm

1 stop5h 55m

$205

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 8/11

7:49 pm-10:04 am

1 stop16h 15m

Ontario

Wed 9/2

6:00 am-6:54 pm

1 stop10h 54m

$208
Quickest round-trip

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 8/11

7:49 pm-11:50 pm

1 stop6h 01m

Ontario

Wed 8/12

1:38 pm-8:37 pm

1 stop4h 59m

$210

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 7/28

7:39 pm-10:04 am

1 stop16h 25m

Ontario

Wed 8/5

1:38 pm-8:37 pm

1 stop4h 59m

$218

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Wed 8/19

7:49 pm-11:55 pm

1 stop6h 06m

Ontario

Wed 9/16

9:49 pm-9:39 pm

1 stop21h 50m

$220

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 7/28

9:32 pm-3:14 pm

1 stop19h 42m

Ontario

Tue 8/11

1:38 pm-8:37 pm

1 stop4h 59m

$226

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 7/14

7:39 pm-11:50 pm

1 stop6h 11m

Ontario

Wed 7/15

1:38 pm-8:37 pm

1 stop4h 59m

$227

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 7/14

9:32 pm-3:14 pm

1 stop19h 42m

Ontario

Tue 7/21

1:38 pm-8:37 pm

1 stop4h 59m

$228

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Tue 7/14

9:32 pm-3:14 pm

1 stop19h 42m

Ontario

Tue 7/28

3:40 pm-8:37 pm

1 stop26h 57m

$230

San AntonioOntario

SAT - ONT

SATONT

San Antonio

Thu 9/3

7:49 pm-11:55 pm

1 stop6h 06m

Ontario

Tue 9/8

6:00 am-6:54 pm

1 stop10h 54m

$231

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to Los Angeles from

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 September instead. Flights to Ontario in September, while not as cheap as those in November, still average around $280.

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 $357 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 $208 on momondo.

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

As of June 2026, prices for San Antonio to Ontario flights are approximately 48% 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 45m

Direct flights

None
The fastest flight from San Antonio to Ontario takes 5h 45m
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 45m 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 $140Free CancellationRating
5.6
2,867 reviews
Search Frontier flights
American AirlinesPriceFrom $273Free CancellationRating
7.1
11,751 reviews
Search American Airlines flights
SouthwestPriceFrom $297Free CancellationRating
7.9
4,242 reviews
Search Southwest 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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