Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Antonio to Los Angeles from $120

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 9/10. 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
8:20 pm - 11:47 pmSAT  San Antonio-ONT Ontario
5h 27m1 stop Denver Intl
Frontier Logo
6:15 am - 7:25 pmONT  Ontario-SAT San Antonio
11h 10m1 stop Denver Intl
$244Frontier
Thu, Sep 10 - Sat, Sep 12
Frontier Logo
2:47 pm - 11:22 amSAT  San Antonio-ONT Ontario
22h 35m1 stop Las Vegas Harry Reid Intl
Frontier Logo
2:30 pm - 11:44 amONT  Ontario-SAT San Antonio
19h 14m1 stop Las Vegas Harry Reid Intl
$244Frontier
Sat, Sep 12 - Sat, Sep 26
Frontier Logo
12:39 pm - 7:04 amSAT  San Antonio-ONT Ontario
20h 25m1 stop Las Vegas Harry Reid Intl
Frontier Logo
8:00 am - 9:03 pmONT  Ontario-SAT San Antonio
11h 03m1 stop Las Vegas Harry Reid Intl
$244Frontier
Thu, Oct 1 - Mon, Oct 5
American Airlines Logo
3:43 pm - 6:15 pmSAT  San Antonio-ONT Ontario
4h 32m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
6:15 am - 1:02 pmONT  Ontario-SAT San Antonio
4h 47m1 stop Phoenix Sky Harbor Intl
$355American Airlines
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
3:43 pm - 6:15 pmSAT  San Antonio-ONT Ontario
4h 32m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
6:15 am - 1:02 pmONT  Ontario-SAT San Antonio
4h 47m1 stop Phoenix Sky Harbor Intl
$356American Airlines
Sat, Sep 5 - Fri, Sep 11
Delta Logo
6:35 am - 12:21 pmSAT  San Antonio-ONT Ontario
7h 46m1 stop Salt Lake City
Delta Logo
9:45 am - 5:17 pmONT  Ontario-SAT San Antonio
5h 32m1 stop Salt Lake City
$370Delta
Tue, Oct 27 - Fri, Oct 30
Delta Logo
6:04 pm - 11:58 pmSAT  San Antonio-ONT Ontario
7h 54m1 stop Salt Lake City
Delta Logo
1:25 pm - 8:56 pmONT  Ontario-SAT San Antonio
5h 31m1 stop Salt Lake City
$370Delta
Mon, Nov 23 - Thu, Nov 26
American Airlines Logo
3:43 pm - 6:15 pmSAT  San Antonio-ONT Ontario
4h 32m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
6:15 am - 1:02 pmONT  Ontario-SAT San Antonio
4h 47m1 stop Phoenix Sky Harbor Intl
$387American Airlines
Sat, Sep 5 - Fri, Sep 11
Southwest Logo
2:20 pm - 9:00 pmSAT  San Antonio-ONT Ontario
8h 40m2 stops Dallas Love Field Denver Intl
Southwest Logo
8:05 am - 5:25 pmONT  Ontario-SAT San Antonio
7h 20m2 stops Denver Intl Dallas Love Field
$395Southwest
Sat, Oct 17 - Mon, Nov 2
Southwest Logo
11:55 am - 3:25 pmSAT  San Antonio-ONT Ontario
5h 30m1 stop Phoenix Sky Harbor Intl
Southwest Logo
1:00 pm - 10:20 pmONT  Ontario-SAT San Antonio
7h 20m2 stops Sacramento Intl Las Vegas Harry Reid Intl
$408Southwest
Fri, Nov 6 - Mon, Nov 9

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Frontier flights from San Antonio to Ontario

Our best Frontier deals on San Antonio to Ontario flight tickets
Frontier
Sep 14
SAT12:39 pmSan Antonio
22h 30m
1 stop
ONT9:09 amOntario
Sep 21
ONT8:24 pmOntario
15h 56m
1 stop
SAT2:20 pmSan Antonio
$244
Frontier
Sep 17
SAT8:20 pmSan Antonio
5h 27m
1 stop
ONT11:47 pmOntario
Sep 21
ONT6:15 amOntario
11h 10m
1 stop
SAT7:25 pmSan Antonio
$246
Frontier
Sep 14
SAT8:20 pmSan Antonio
5h 27m
1 stop
ONT11:47 pmOntario
Sep 19
ONT11:45 amOntario
5h 40m
1 stop
SAT7:25 pmSan Antonio
$247

Delta flights from San Antonio to Ontario

Our best Delta deals on San Antonio to Ontario flight tickets
Delta
Aug 19
SAT6:50 amSan Antonio
7h 26m
1 stop
ONT12:16 pmOntario
Aug 27
ONT5:05 pmOntario
5h 21m
1 stop
SAT12:26 amSan Antonio
$461
Delta
Aug 19
SAT6:50 amSan Antonio
7h 26m
1 stop
ONT12:16 pmOntario
Aug 28
ONT5:05 pmOntario
5h 21m
1 stop
SAT12:26 amSan Antonio
$479
Delta
Aug 21
SAT6:03 pmSan Antonio
7h 31m
1 stop
ONT11:34 pmOntario
Aug 22
ONT1:06 pmOntario
6h 10m
1 stop
SAT9:16 pmSan Antonio
$537

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 August 7, 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 San Antonio - ONT Ontario

SATONT

San Antonio

Thu 9/10

8:20 pm-11:47 pm

1 stop5h 27m

Ontario

Sat 9/12

6:15 am-7:25 pm

1 stop11h 10m

$244

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sat 9/12

2:47 pm-11:22 am

1 stop22h 35m

Ontario

Sat 9/26

2:30 pm-11:44 am

1 stop19h 14m

$244

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Thu 10/1

12:39 pm-7:04 am

1 stop20h 25m

Ontario

Mon 10/5

8:00 am-9:03 pm

1 stop11h 03m

$244
Quickest round-trip

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sat 9/5

3:43 pm-6:15 pm

1 stop4h 32m

Ontario

Fri 9/11

6:15 am-1:02 pm

1 stop4h 47m

$355

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sat 9/5

3:43 pm-6:15 pm

1 stop4h 32m

Ontario

Fri 9/11

6:15 am-1:02 pm

1 stop4h 47m

$356

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Tue 10/27

6:35 am-12:21 pm

1 stop7h 46m

Ontario

Fri 10/30

9:45 am-5:17 pm

1 stop5h 32m

$370

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Mon 11/23

6:04 pm-11:58 pm

1 stop7h 54m

Ontario

Thu 11/26

1:25 pm-8:56 pm

1 stop5h 31m

$370

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sat 9/5

3:43 pm-6:15 pm

1 stop4h 32m

Ontario

Fri 9/11

6:15 am-1:02 pm

1 stop4h 47m

$387

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Sat 10/17

2:20 pm-9:00 pm

2 stops8h 40m

Ontario

Mon 11/2

8:05 am-5:25 pm

2 stops7h 20m

$395

San AntonioOntario

SAT San Antonio - ONT Ontario

SATONT

San Antonio

Fri 11/6

11:55 am-3:25 pm

1 stop5h 30m

Ontario

Mon 11/9

1:00 pm-10:20 pm

2 stops7h 20m

$408

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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?

Prices are currently typical for flights on this route.

Typical prices usually range from $238 to $396.
The lowest price recently found on this route was $244.

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 $296.

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 $365 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 August 2026, prices for San Antonio to Ontario flights are approximately 45% 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 27m

Direct flights

None
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
2,722 reviews
Search Frontier flights
American AirlinesPriceFrom $273Free CancellationRating
7.1
11,877 reviews
Search American Airlines flights
SouthwestPriceFrom $297Free CancellationRating
8.0
4,217 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.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 9/6
Sun 9/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States