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Cheap flights from San Antonio to Ontario from $89

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 Ontario departing on 4/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Antonio to Los Angeles

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Antonio to Los Angeles.
Frontier Logo
8:25 pm - 11:15 amSAT-ONT
16h 50m1 stop
Frontier Logo
1:15 pm - 12:43 pmONT-SAT
21h 28m1 stop
$190Frontier
Find Deal
Sun, May 11 - Sat, May 17
Frontier Logo
1:43 pm - 12:08 pmSAT-ONT
24h 25m1 stop
Frontier Logo
5:21 pm - 6:51 pmONT-SAT
23h 30m1 stop
$191Frontier
Find Deal
Mon, May 19 - Wed, May 28
Delta Logo
7:45 am - 12:15 pmSAT-ONT
6h 30m1 stop
Delta Logo
10:05 pm - 9:45 amONT-SAT
9h 40m1 stop
$285Delta
Find Deal
Tue, Jun 3 - Tue, Jun 10
American Airlines Logo
7:34 pm - 11:43 pmSAT-ONT
6h 09m1 stop
American Airlines Logo
12:59 am - 8:25 amONT-SAT
5h 26m1 stop
$302American Airlines
Find Deal
Mon, Jun 2 - Mon, Jun 9
Delta Logo
8:00 am - 12:17 pmSAT-ONT
6h 17m1 stop
Delta Logo
10:59 pm - 11:10 amONT-SAT
10h 11m1 stop
$317Delta
Find Deal
Tue, Jun 24 - Tue, Jul 8
United Airlines Logo
6:04 pm - 9:10 pmSAT-ONT
5h 06m1 stop
United Airlines Logo
1:33 pm - 11:56 pmONT-SAT
8h 23m1 stop
$318United Airlines
Find Deal
Thu, Jun 12 - Sat, Jun 14
United Airlines Logo
5:35 am - 12:14 pmSAT-ONT
8h 39m2 stops
United Airlines Logo
1:33 pm - 9:04 pmONT-SAT
5h 31m1 stop
$323United Airlines
Find Deal
Thu, Jun 12 - Sat, Jun 14
Southwest Logo
6:30 am - 11:50 amSAT-ONT
7h 20m2 stops
Southwest Logo
1:05 pm - 10:25 pmONT-SAT
7h 20m1 stop
$341Southwest
Find Deal
Sun, May 25 - Wed, May 28
American Airlines Logo
8:34 pm - 11:43 pmSAT-ONT
5h 09m1 stop
American Airlines Logo
2:44 pm - 11:02 pmONT-SAT
6h 18m1 stop
$342American Airlines
Find Deal
Thu, May 15 - Tue, May 20
Southwest Logo
5:50 am - 11:50 amSAT-ONT
8h 00m2 stops
Southwest Logo
8:55 am - 5:45 pmONT-SAT
6h 50m2 stops
$346Southwest
Find Deal
Sun, May 25 - Wed, May 28

Delta flights from San Antonio to Ontario

Our best Delta deals on San Antonio to Ontario flight tickets
Delta
Jun 3
SAT7:45 amSan Antonio
6h 30m
1 stop
ONT12:15 pmOntario
Jun 10
ONT10:05 pmOntario
9h 40m
1 stop
SAT9:45 amSan Antonio
Delta
Jun 24
SAT8:00 amSan Antonio
6h 17m
1 stop
ONT12:17 pmOntario
Jul 8
ONT10:59 pmOntario
10h 11m
1 stop
SAT11:10 amSan Antonio
Delta
May 21
SAT6:10 pmSan Antonio
7h 32m
1 stop
ONT11:42 pmOntario
May 26
ONT4:57 pmOntario
5h 42m
1 stop
SAT12:39 amSan Antonio

American Airlines flights from San Antonio to Ontario

Our best American Airlines deals on San Antonio to Ontario flight tickets
American Airlines
Jun 2
SAT7:34 pmSan Antonio
6h 09m
1 stop
ONT11:43 pmOntario
Jun 9
ONT12:59 amOntario
5h 26m
1 stop
SAT8:25 amSan Antonio
American Airlines
May 15
SAT8:34 pmSan Antonio
5h 09m
1 stop
ONT11:43 pmOntario
May 20
ONT2:44 pmOntario
6h 18m
1 stop
SAT11:02 pmSan Antonio
American Airlines
May 23
SAT8:34 pmSan Antonio
5h 09m
1 stop
ONT11:43 pmOntario
May 25
ONT2:44 pmOntario
6h 18m
1 stop
SAT11:02 pmSan Antonio

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 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 $236. If you aren’t able to travel during the month of February, then book flights to Ontario from San Antonio during August instead. Flights to Ontario in August, while not as cheap as those in February, still average around $240.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $277. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Ontario for around $359.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from San Antonio to Ontario when you can find flight prices for as low as $241. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $356 on average. Flights to Ontario from San Antonio in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 15 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $329 when searching 15 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 $211 on momondo.

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

As of April 2025, prices for San Antonio to Ontario flights are approximately 6% 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

$89

Fastest flight time

4h 15m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from San Antonio in the past 72 hours is $89. The best round-trip flight deal from San Antonio to Ontario found on momondo in the last 72 hours is $190.
The fastest flight from San Antonio to Ontario takes 4h 15m
There are no direct flights from San Antonio to Ontario. Popular non-direct route for this connection is San Antonio Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

  • 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 4h 25m 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
Spirit AirlinesPriceFrom $43Free CancellationRating
6.3
7,940 reviews
Search Spirit Airlines flights
FrontierPriceFrom $118Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
DeltaPriceFrom $173Free CancellationRating
8.0
7,920 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $301Free CancellationRating
8.0
4,286 reviews
Search Southwest flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
8,684 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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