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Cheap flights from San Antonio to Los Angeles from $86

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
8:21 pm - 10:29 amSAT  San Antonio-ONT Ontario
16h 08m1 stop Denver Intl
Frontier Logo
6:15 am - 7:26 pmONT  Ontario-SAT San Antonio
11h 11m1 stop Denver Intl
$174Frontier
Tue, Oct 13 - Tue, Oct 20
Frontier Logo
8:21 pm - 10:29 amSAT  San Antonio-ONT Ontario
16h 08m1 stop Denver Intl
Frontier Logo
6:25 am - 7:25 pmONT  Ontario-SAT San Antonio
11h 00m1 stop Denver Intl
$176Frontier
Tue, Oct 20 - Tue, Oct 27
Frontier Logo
8:21 pm - 10:29 amSAT  San Antonio-ONT Ontario
16h 08m1 stop Denver Intl
Frontier Logo
6:25 am - 7:25 pmONT  Ontario-SAT San Antonio
11h 00m1 stop Denver Intl
$178Frontier
Tue, Oct 20 - Tue, Oct 27
American Airlines Logo
3:35 pm - 9:57 pmSAT  San Antonio-ONT Ontario
8h 22m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
9:28 am - 11:05 pmONT  Ontario-SAT San Antonio
11h 37m1 stop Phoenix Sky Harbor Intl
$353American Airlines
Wed, Dec 30 - Wed, Jan 13
Southwest Logo
4:35 pm - 10:15 pmSAT  San Antonio-ONT Ontario
7h 40m1 stop Las Vegas Harry Reid Intl
Southwest Logo
10:25 am - 9:25 pmONT  Ontario-SAT San Antonio
9h 00m2 stops Oakland Phoenix Sky Harbor Intl
$360Southwest
Mon, Oct 19 - Tue, Nov 3
Southwest Logo
11:30 am - 5:00 pmSAT  San Antonio-ONT Ontario
7h 30m2 stops Dallas Love Field Phoenix Sky Harbor Intl
Southwest Logo
7:40 am - 4:00 pmONT  Ontario-SAT San Antonio
6h 20m2 stops Phoenix Sky Harbor Intl Houston Hobby
$366Southwest
Tue, Feb 2 - Wed, Feb 10
United Airlines Logo
5:30 am - 12:29 pmSAT  San Antonio-ONT Ontario
8h 59m2 stops Houston George Bush Intcntl San Francisco
United Airlines Logo
1:29 pm - 10:51 pmONT  Ontario-SAT San Antonio
7h 22m2 stops Denver Intl Houston George Bush Intcntl
$366United Airlines
Sat, Oct 31 - Sat, Nov 7
United Airlines Logo
5:58 pm - 10:11 pmSAT  San Antonio-ONT Ontario
6h 13m1 stop Houston George Bush Intcntl
United Airlines Logo
6:53 pm - 8:55 amONT  Ontario-SAT San Antonio
12h 02m2 stops San Francisco Houston George Bush Intcntl
$428United Airlines
Sun, Dec 20 - Fri, Jan 8
American Airlines Logo
3:39 pm - 6:43 pmSAT  San Antonio-ONT Ontario
5h 04m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
4:29 pm - 10:59 pmONT  Ontario-SAT San Antonio
4h 30m1 stop Phoenix Sky Harbor Intl
$435American Airlines
Thu, Oct 15 - Wed, Oct 21
American Airlines Logo
2:03 pm - 7:05 pmSAT  San Antonio-ONT Ontario
7h 02m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
4:25 pm - 11:09 pmONT  Ontario-SAT San Antonio
4h 44m1 stop Phoenix Sky Harbor Intl
$563American Airlines
Wed, Nov 25 - Mon, Nov 30

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Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Oct 13
SAT8:21 pmSan Antonio
16h 08m
1 stop
ONT10:29 amOntario
Oct 20
ONT6:15 amOntario
11h 11m
1 stop
SAT7:26 pmSan Antonio
$174
Frontier
Oct 20
SAT8:21 pmSan Antonio
16h 08m
1 stop
ONT10:29 amOntario
Oct 27
ONT6:25 amOntario
11h 00m
1 stop
SAT7:25 pmSan Antonio
$176
Frontier
Nov 11
SAT8:20 pmSan Antonio
16h 15m
1 stop
ONT10:35 amOntario
Nov 14
ONT6:25 amOntario
11h 00m
1 stop
SAT7:25 pmSan Antonio
$179

momondo Fare Finder

 
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 San Antonio - ONT Ontario

SATONT

San Antonio

Tue 10/13

8:21 pm-10:29 am

1 stop16h 08m

Ontario

Tue 10/20

6:15 am-7:26 pm

1 stop11h 11m

$174

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Tue 10/20

8:21 pm-10:29 am

1 stop16h 08m

Ontario

Tue 10/27

6:25 am-7:25 pm

1 stop11h 00m

$176

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Tue 10/20

8:21 pm-10:29 am

1 stop16h 08m

Ontario

Tue 10/27

6:25 am-7:25 pm

1 stop11h 00m

$178

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Wed 12/30

3:35 pm-9:57 pm

1 stop8h 22m

Ontario

Wed 1/13

9:28 am-11:05 pm

1 stop11h 37m

$353

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Mon 10/19

4:35 pm-10:15 pm

1 stop7h 40m

Ontario

Tue 11/3

10:25 am-9:25 pm

2 stops9h 00m

$360

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Tue 2/2

11:30 am-5:00 pm

2 stops7h 30m

Ontario

Wed 2/10

7:40 am-4:00 pm

2 stops6h 20m

$366

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sat 10/31

5:30 am-12:29 pm

2 stops8h 59m

Ontario

Sat 11/7

1:29 pm-10:51 pm

2 stops7h 22m

$366

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sun 12/20

5:58 pm-10:11 pm

1 stop6h 13m

Ontario

Fri 1/8

6:53 pm-8:55 am

2 stops12h 02m

$428
Quickest round-trip

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Thu 10/15

3:39 pm-6:43 pm

1 stop5h 04m

Ontario

Wed 10/21

4:29 pm-10:59 pm

1 stop4h 30m

$435

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Wed 11/25

2:03 pm-7:05 pm

2 stops7h 02m

Ontario

Mon 11/30

4:25 pm-11:09 pm

1 stop4h 44m

$563

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?

Prices are currently low for flights on this route.

Typical prices usually range from $302 to $520.
The lowest price recently found on this route was $174.

What is the cheapest month to fly to Ontario?

In general, October 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 $313. If you aren’t able to travel during the month of October, then book flights to Ontario from San Antonio during November instead. Flights to Ontario in November, while not as cheap as those in October, still average around $316.

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 $378 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 $246 on momondo.

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

As of September 2026, prices for San Antonio to Ontario flights are approximately 38% 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

Best Price Found

$86

Fastest flight time

5h 27m

Direct flights

None
The best one-way flight to Ontario from San Antonio in the past 72 hours is $86. The best round-trip flight deal from San Antonio to Ontario found on momondo in the last 72 hours is $174.
The fastest flight from San Antonio to Ontario takes 5h 27m
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 27m 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
2,579 reviews
Search Frontier flights
American AirlinesPriceFrom $273Free CancellationRating
7.0
12,075 reviews
Search American Airlines flights
SouthwestPriceFrom $349Free CancellationRating
8.0
4,196 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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