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Cheap flights from San Antonio to Los Angeles from $64

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 2/21. 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
6:12 pm - 9:34 am
SAT
-
ONT
17h 22m
1 stop
Frontier Logo
6:00 am - 7:01 pm
ONT
-
SAT
11h 01m
1 stop
$127Frontier
qua, fev 18 - sáb, fev 21
Frontier Logo
8:22 pm - 9:34 pm
SAT
-
ONT
27h 12m
1 stop
Frontier Logo
8:40 am - 5:15 pm
ONT
-
SAT
6h 35m
1 stop
$130Frontier
seg, mar 2 - qua, mar 4
Frontier Logo
9:39 pm - 1:11 pm
SAT
-
ONT
17h 32m
1 stop
Frontier Logo
8:40 am - 5:15 pm
ONT
-
SAT
6h 35m
1 stop
$135Frontier
seg, mar 2 - qua, mar 4
Frontier Logo
5:36 pm - 9:34 pm
SAT
-
ONT
29h 58m
1 stop
Frontier Logo
6:15 am - 12:17 am
ONT
-
SAT
16h 02m
1 stop
$137Frontier
ter, mar 3 - ter, mar 24
Frontier Logo
7:56 pm - 7:59 am
SAT
-
ONT
14h 03m
1 stop
Frontier Logo
6:00 am - 7:01 pm
ONT
-
SAT
11h 01m
1 stop
$138Frontier
sáb, fev 21 - sáb, fev 28
Frontier Logo
3:50 pm - 1:52 pm
SAT
-
ONT
24h 02m
1 stop
Frontier Logo
3:22 pm - 3:47 pm
ONT
-
SAT
22h 25m
1 stop
$147Frontier
seg, fev 23 - qua, fev 25
Frontier Logo
7:56 pm - 11:59 pm
SAT
-
ONT
6h 03m
1 stop
Frontier Logo
7:17 pm - 3:47 pm
ONT
-
SAT
18h 30m
1 stop
$154Frontier
sáb, fev 21 - qua, fev 25
Frontier Logo
9:39 pm - 9:34 pm
SAT
-
ONT
25h 55m
2 stops
Frontier Logo
8:40 am - 5:15 pm
ONT
-
SAT
6h 35m
1 stop
$157Frontier
seg, mar 2 - qua, mar 4
Frontier Logo
5:36 pm - 6:22 pm
SAT
-
ONT
26h 46m
2 stops
Frontier Logo
6:15 am - 12:17 am
ONT
-
SAT
16h 02m
1 stop
$163Frontier
ter, mar 3 - ter, mar 24
Frontier Logo
9:39 pm - 9:34 pm
SAT
-
ONT
25h 55m
2 stops
Frontier Logo
8:40 am - 5:15 pm
ONT
-
SAT
6h 35m
1 stop
$167Frontier
seg, mar 2 - qua, mar 4

Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Feb 18
SAT6:12 pmSan Antonio
17h 22m
1 stop
ONT9:34 amOntario
Feb 21
ONT6:00 amOntario
11h 01m
1 stop
SAT7:01 pmSan Antonio
$127
Frontier
Mar 2
SAT8:22 pmSan Antonio
27h 12m
1 stop
ONT9:34 pmOntario
Mar 4
ONT8:40 amOntario
6h 35m
1 stop
SAT5:15 pmSan Antonio
$130
Frontier
Mar 2
SAT9:39 pmSan Antonio
17h 32m
1 stop
ONT1:11 pmOntario
Mar 4
ONT2:06 pmOntario
23h 41m
1 stop
SAT3:47 pmSan Antonio
$137

Southwest flights from San Antonio to Ontario

Our best Southwest deals on San Antonio to Ontario flight tickets
Southwest
Feb 10
SAT12:25 pmSan Antonio
6h 45m
2 stops
ONT5:10 pmOntario
Feb 17
ONT12:45 pmOntario
7h 10m
2 stops
SAT9:55 pmSan Antonio
$403
Southwest
Feb 8
SAT12:25 pmSan Antonio
6h 45m
2 stops
ONT5:10 pmOntario
Feb 12
ONT5:30 amOntario
6h 10m
2 stops
SAT1:40 pmSan Antonio
$613

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 janeiro 29, 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

San AntonioOntario

SAT - ONT

SATONT

San Antonio

qua 2/18

6:12 pm-9:34 am

1 stop17h 22m

Ontario

sáb 2/21

6:00 am-7:01 pm

1 stop11h 01m

$127

San AntonioOntario

SAT - ONT

SATONT

San Antonio

seg 3/2

8:22 pm-9:34 pm

1 stop27h 12m

Ontario

qua 3/4

8:40 am-5:15 pm

1 stop6h 35m

$130

San AntonioOntario

SAT - ONT

SATONT

San Antonio

seg 3/2

9:39 pm-1:11 pm

1 stop17h 32m

Ontario

qua 3/4

8:40 am-5:15 pm

1 stop6h 35m

$135

San AntonioOntario

SAT - ONT

SATONT

San Antonio

ter 3/3

5:36 pm-9:34 pm

1 stop29h 58m

Ontario

ter 3/24

6:15 am-12:17 am

1 stop16h 02m

$137

San AntonioOntario

SAT - ONT

SATONT

San Antonio

sáb 2/21

7:56 pm-7:59 am

1 stop14h 03m

Ontario

sáb 2/28

6:00 am-7:01 pm

1 stop11h 01m

$138

San AntonioOntario

SAT - ONT

SATONT

San Antonio

seg 2/23

3:50 pm-1:52 pm

1 stop24h 02m

Ontario

qua 2/25

3:22 pm-3:47 pm

1 stop22h 25m

$147

San AntonioOntario

SAT - ONT

SATONT

San Antonio

sáb 2/21

7:56 pm-11:59 pm

1 stop6h 03m

Ontario

qua 2/25

7:17 pm-3:47 pm

1 stop18h 30m

$154

San AntonioOntario

SAT - ONT

SATONT

San Antonio

seg 3/2

9:39 pm-9:34 pm

2 stops25h 55m

Ontario

qua 3/4

8:40 am-5:15 pm

1 stop6h 35m

$157

San AntonioOntario

SAT - ONT

SATONT

San Antonio

ter 3/3

5:36 pm-6:22 pm

2 stops26h 46m

Ontario

ter 3/24

6:15 am-12:17 am

1 stop16h 02m

$163

San AntonioOntario

SAT - ONT

SATONT

San Antonio

seg 3/2

9:39 pm-9:34 pm

2 stops25h 55m

Ontario

qua 3/4

8:40 am-5:15 pm

1 stop6h 35m

$167

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, 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 $257. If you aren’t able to travel during the month of February, then book flights to Ontario from San Antonio during November instead. Flights to Ontario in November, while not as cheap as those in February, still average around $273.

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 $334 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 January 2026, prices for San Antonio to Ontario flights are approximately 29% 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 32m

Direct flights

None
The fastest flight from San Antonio to Ontario takes 5h 32m
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 32m 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
DeltaPriceFrom $110Free CancellationRating
7.9
8,128 reviews
Search Delta flights
FrontierPriceFrom $115Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
American AirlinesPriceFrom $264Free CancellationRating
7.2
11,205 reviews
Search American Airlines flights
SouthwestPriceFrom $295Free CancellationRating
8.0
4,267 reviews
Search Southwest flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
9,215 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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