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Cheap flights from Ontario to San Antonio from $183

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to San Antonio departing on 5/5. 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

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Find the cheapest flights from Ontario to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:20 pm - 10:51 pm
YOW
-
SAT
6h 31m
1 stop
United Airlines Logo
6:40 am - 1:59 pm
SAT
-
YOW
6h 19m
1 stop
$316United Airlines
Thu, Jul 23 - Sun, Jul 26
United Airlines Logo
5:20 pm - 10:51 pm
YOW
-
SAT
6h 31m
1 stop
United Airlines Logo
5:30 am - 5:07 pm
SAT
-
YOW
10h 37m
2 stops
$321United Airlines
Thu, Jul 23 - Sun, Jul 26
American Airlines Logo
3:45 pm - 8:58 pm
YUL
-
SAT
6h 13m
1 stop
American Airlines Logo
7:05 am - 9:37 pm
SAT
-
YUL
13h 32m
1 stop
$358American Airlines
Thu, May 7 - Sat, May 9
WestJet Logo
6:10 am - 10:35 am
YYZ
-
SAT
5h 25m
1 stop
WestJet Logo
5:10 am - 1:34 pm
SAT
-
YYZ
7h 24m
1 stop
$360WestJet
Mon, Jul 6 - Sun, Jul 12
WestJet Logo
5:45 pm - 12:13 am
YYZ
-
SAT
7h 28m
1 stop
WestJet Logo
4:15 pm - 8:59 am
SAT
-
YYZ
15h 44m
1 stop
$361WestJet
Fri, May 15 - Tue, May 19
American Airlines Logo
1:03 pm - 9:57 pm
YUL
-
SAT
9h 54m
2 stops
American Airlines Logo
7:05 am - 9:37 pm
SAT
-
YUL
13h 32m
1 stop
$368American Airlines
Thu, May 7 - Sat, May 9
Delta Logo
6:00 am - 3:49 pm
YUL
-
SAT
10h 49m
1 stop
Delta Logo
5:00 pm - 11:57 pm
SAT
-
YUL
5h 57m
1 stop
$375Delta
Fri, Apr 24 - Tue, May 26
Delta Logo
6:45 pm - 12:46 am
YUL
-
SAT
7h 01m
1 stop
Delta Logo
6:50 am - 5:41 pm
SAT
-
YUL
9h 51m
1 stop
$380Delta
Fri, Apr 24 - Mon, May 25
Air Canada Logo
3:30 pm - 9:13 pm
YUL
-
SAT
6h 43m
1 stop
Air Canada Logo
9:00 am - 6:52 pm
SAT
-
YUL
8h 52m
1 stop
$386Air Canada
Wed, Jul 29 - Tue, Aug 11
Air Canada Logo
6:05 am - 3:21 pm
YOW
-
SAT
10h 16m
1 stop
Air Canada Logo
6:44 am - 9:35 pm
SAT
-
YOW
13h 51m
1 stop
$390Air Canada
Thu, Jun 4 - Mon, Jun 8

United Airlines flights from Region of Ontario to San Antonio

Our best United Airlines deals on Region of Ontario to San Antonio flight tickets
United Airlines
Jul 23
YOW5:20 pmOttawa
6h 31m
1 stop
SAT10:51 pmSan Antonio
Jul 26
SAT6:40 amSan Antonio
6h 19m
1 stop
YOW1:59 pmOttawa
$316
United Airlines
Jul 23
YOW5:20 pmOttawa
6h 31m
1 stop
SAT10:51 pmSan Antonio
Jul 26
SAT5:30 amSan Antonio
10h 37m
2 stops
YOW5:07 pmOttawa
$321
United Airlines
Jun 4
YOW6:00 amOttawa
5h 59m
1 stop
SAT10:59 amSan Antonio
Jun 8
SAT6:44 amSan Antonio
6h 15m
1 stop
YOW1:59 pmOttawa
$337

Air Canada flights from Region of Ontario to San Antonio

Our best Air Canada deals on Region of Ontario to San Antonio flight tickets
Air Canada
Jul 29
YUL3:30 pmMontreal Pierre Elliott Trudeau Intl
6h 43m
1 stop
SAT9:13 pmSan Antonio
Aug 11
SAT9:00 amSan Antonio
8h 52m
1 stop
YUL6:52 pmMontreal Pierre Elliott Trudeau Intl
$386
Air Canada
Jun 4
YOW6:05 amOttawa
10h 16m
1 stop
SAT3:21 pmSan Antonio
Jun 8
SAT6:44 amSan Antonio
13h 51m
1 stop
YOW9:35 pmOttawa
$390
Air Canada
Jun 4
YOW6:00 amOttawa
11h 03m
2 stops
SAT4:03 pmSan Antonio
Jun 8
SAT1:40 pmSan Antonio
6h 55m
1 stop
YOW9:35 pmOttawa
$393

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to San Antonio 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 April 13, 2026.
Use the filters below to find and compare flights from Ontario to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 7/23

5:20 pm-10:51 pm

1 stop6h 31m

San Antonio

Sun 7/26

6:40 am-1:59 pm

1 stop6h 19m

$316

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 7/23

5:20 pm-10:51 pm

1 stop6h 31m

San Antonio

Sun 7/26

5:30 am-5:07 pm

2 stops10h 37m

$321

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Thu 5/7

3:45 pm-8:58 pm

1 stop6h 13m

San Antonio

Sat 5/9

7:05 am-9:37 pm

1 stop13h 32m

$358
Quickest round-trip

TorontoSan Antonio

YYZ - SAT

YYZSAT

Toronto Pearson Intl

Mon 7/6

6:10 am-10:35 am

1 stop5h 25m

San Antonio

Sun 7/12

5:10 am-1:34 pm

1 stop7h 24m

$360

TorontoSan Antonio

YYZ - SAT

YYZSAT

Toronto Pearson Intl

Fri 5/15

5:45 pm-12:13 am

1 stop7h 28m

San Antonio

Tue 5/19

4:15 pm-8:59 am

1 stop15h 44m

$361

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Thu 5/7

1:03 pm-9:57 pm

2 stops9h 54m

San Antonio

Sat 5/9

7:05 am-9:37 pm

1 stop13h 32m

$368

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Fri 4/24

6:00 am-3:49 pm

1 stop10h 49m

San Antonio

Tue 5/26

5:00 pm-11:57 pm

1 stop5h 57m

$375

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Fri 4/24

6:45 pm-12:46 am

1 stop7h 01m

San Antonio

Mon 5/25

6:50 am-5:41 pm

1 stop9h 51m

$380

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 7/29

3:30 pm-9:13 pm

1 stop6h 43m

San Antonio

Tue 8/11

9:00 am-6:52 pm

1 stop8h 52m

$386

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 6/4

6:05 am-3:21 pm

1 stop10h 16m

San Antonio

Mon 6/8

6:44 am-9:35 pm

1 stop13h 51m

$390

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 San Antonio from

How to get the cheapest flight ticket from Region of Ontario to San Antonio

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 San Antonio?

If you aren’t able to travel during the month of April, then book flights to San Antonio from Region of Ontario during September instead. Flights to San Antonio in September, while not as cheap as those in April, still average around $435.

What is the cheapest Ontario to San Antonio flight route?

Fly from Toronto Pearson Intl to San Antonio for the best Ontario - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $444 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Region of Ontario for as low as $320 on momondo.

What cabin class options are available on Ontario to San Antonio flights?

There is only 1 cabin class available to choose from on Ontario to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to San Antonio flights?

You could potentially save up to 10% on your flight if you consider stops on a Region of Ontario to San Antonio flight.

Cheap Region of Ontario to San Antonio flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to San Antonio

Fastest flight time

3h 43m

Direct flights

Tue, Thu and Sat

Airports in San Antonio

1 airport
The fastest flight from Region of Ontario to San Antonio takes 3h 43m
Direct flights go from Region of Ontario to San Antonio on Tuesday, Thursday and Saturday. The only airline offering direct flights is Air Canada.
There is 1 airport in San Antonio. From Region of Ontario there are direct flights to San Antonio (SAT).
Search flight deals

Frequently asked questions about flying from Ontario to San Antonio

  • When did momondo last update prices for flights from Ontario to San Antonio Airport?

    Prices for flights from Ontario to San Antonio Airport refresh daily.

  • How many operators does momondo search for flights from Ontario to San Antonio Airport?

  • How old do you have to be to fly from Ontario to San Antonio Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Region of Ontario to San Antonio?

Best airlines flying from Region of Ontario to San Antonio

Compare and see reviews for airlines that fly from Region of Ontario to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $273Free CancellationRating
7.9
8,406 reviews
Search Delta flights
United AirlinesPriceFrom $355Free CancellationRating
7.4
9,579 reviews
Search United Airlines flights
WestJetPriceFrom $360Free CancellationRating
7.2
3,320 reviews
Search WestJet flights
American AirlinesPriceFrom $381Free CancellationRating
7.1
11,568 reviews
Search American Airlines flights

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Pleasanton
Schertz

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to San Antonio?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Antonio from Ontario.

Can I find flights from Ontario to San Antonio with flexible booking policies on momondo?

All flight searches from Ontario to San Antonio on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to San Antonio?

Once all potential Ontario to San Antonio 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 Ontario to San Antonio right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to San Antonio now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Antonio and let you know when they change.

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