$165 Find Cheap Flights from San Antonio to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Ontario departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy, 0 bags

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Book Cheap San Antonio to Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Antonio to Ontario

Sat, Aug 8 - Tue, Aug 11
Delta Logo
2:22 pm - 11:40 pm
SAT
-
YUL
8h 18m
1 stop
Delta Logo
5:10 pm - 10:34 pm
YUL
-
SAT
6h 24m
1 stop
$389Delta
Sat, Sep 19 - Tue, Sep 29
American Airlines Logo
10:51 am - 10:52 pm
SAT
-
YUL
11h 01m
2 stops
American Airlines Logo
7:50 am - 8:24 pm
YUL
-
SAT
13h 34m
1 stop
$399American Airlines
Sat, Sep 5 - Mon, Sep 14
Delta Logo
2:43 pm - 11:52 pm
SAT
-
YUL
8h 09m
1 stop
Delta Logo
6:47 pm - 12:08 am
YUL
-
SAT
6h 21m
1 stop
$409Delta
Thu, Oct 1 - Sat, Oct 31
American Airlines Logo
6:48 pm - 11:44 am
SAT
-
YUL
15h 56m
1 stop
American Airlines Logo
1:01 pm - 10:57 pm
YUL
-
SAT
10h 56m
2 stops
$419American Airlines
Sat, Aug 8 - Sat, Aug 15
Multiple Airlines Logo
8:50 am - 6:00 pm
SAT
-
YUL
8h 10m
1 stop
Multiple Airlines Logo
6:00 am - 1:59 pm
YUL
-
SAT
8h 59m
1 stop
$424Multiple Airlines
Fri, Sep 11 - Fri, Sep 18
Delta Logo
1:55 pm - 11:59 pm
SAT
-
YUL
9h 04m
1 stop
Delta Logo
6:47 pm - 12:10 am
YUL
-
SAT
6h 23m
1 stop
$430Delta
Tue, Dec 8 - Tue, Dec 15
WestJet Logo
4:00 pm - 11:10 pm
SAT
-
YUL
6h 10m
1 stop
WestJet Logo
6:15 pm - 12:28 am
YUL
-
SAT
7h 13m
1 stop
$457WestJet
Sat, Aug 29 - Tue, Sep 1
United Airlines Logo
6:30 am - 9:26 pm
SAT
-
YUL
13h 56m
1 stop
United Airlines Logo
2:20 pm - 8:38 pm
YUL
-
SAT
7h 18m
1 stop
$459United Airlines
Sat, Sep 19 - Fri, Sep 25
Multiple Airlines Logo
8:37 pm - 5:10 am
SAT
-
YYZ
31h 33m
2 stops
Multiple Airlines Logo
8:35 pm - 7:42 pm
YYZ
-
SAT
24h 07m
1 stop
$463Multiple Airlines
Tue, Aug 18 - Thu, Aug 20
WestJet Logo
5:15 am - 8:55 am
SAT
-
YYZ
26h 40m
1 stop
WestJet Logo
6:00 am - 9:29 pm
YYZ
-
SAT
16h 29m
2 stops
$482WestJet
Booking Insights

KAYAK's insights & trends for San Antonio to Ontario flights

Get data-powered insights and trends into flights from San Antonio to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Antonio to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Antonio to Region of Ontario departing in September.

What is the cheapest San Antonio to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ontario from San Antonio found in the last 5 days was to Toronto, at $202 round-trip. The most popular route is from San Antonio (SAT) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 5 days was $202.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights from San Antonio to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally in the morning, when round-trip flights cost $622 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $622.

Can I save money by flying with a layover from San Antonio to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $480, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from San Antonio to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Antonio to Ontario is July, when tickets cost $401 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $644 and $641 respectively.

What’s the cheapest day of the week to fly from San Antonio to Ontario?

The average price of all round-trip flights from San Antonio to Ontario clicked on KAYAK for each day over the last 12 months.

When flying from San Antonio to Ontario, you should consider leaving on a Tuesday and avoid Saturdays if you are looking for the best rates. For your return to San Antonio, you’ll find the best rates on Fridays and the most expensive ones on Wednesdays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Antonio to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Antonio to Ontario, you should book around 4 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low season

September

Cheapest flight

$165
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from San Antonio to Montreal

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from San Antonio to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Antonio to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Antonio to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Antonio to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Antonio to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from San Antonio to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Antonio to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from San Antonio to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many flights are there between San Antonio and Ontario per day?

    There is a maximum of 1 nonstop flight a day that takes off from San Antonio and lands in Ontario, with an average flight time of 3h 30m. The most common departure time is 8:00 am and most flights take off in the morning. Each week, there are 3 flights.

Reviews of the top 5 airlines serving from San Antonio to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Antonio to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8476 reviews
7.8Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

delta wifi wouldn’t work boarding was not in sequence flight crew spent most of their time on the phone with the lights off pretending no one wanted or needed anything

6.0 GoodTapan, Jul 2026
AUS - ATL
Read more Delta reviews

delta wifi wouldn’t work boarding was not in sequence flight crew spent most of their time on the phone with the lights off pretending no one wanted or needed anything

Flight was 2 hr. delay, making me miss my connection to my final flight home to Roanoke. Now 12:38am in the morning and I just got the first available ticket at 5:30 pm tomorrow evening. Sleeping in the airport.

I am a die hard Delta flyer, but they missed it on this flight. It was on their very dated 717-200 aircraft, which I knew when I booked it so I knew it wouldn’t have seatback screens. However, the internet was awful and it wouldn’t even send texts a lot of the time, much less even connect to the delta app. It was also very hot while in the air, which never happens. What was even more disappointing is that the crew only gave me cheezits and a beverage, even though I was in Delta Comfort. The main cabin fare gets these items. I didn’t get any kind of improved snacks and that was unacceptable. The crew wasn’t very visible at all either. If this was my first delta flight, it would be my last. I am just going to assume it was a one-off flight.

flight was delayed 4+ hours. there was really no understanding of why? weather? the last hour of delay was post boarding. pilot seat was broken. was that the real reason? nonetheless, long day of inconveniences.

Flight got canceled 4 times, missed my connecting flight due to delays, have to wait to go home tomorrow

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

After a 5 hour delay waiting at the gate (3 delays adding up) with no clear reason provided, we finally boarded flew 3/4 of the way to Toronto then were turned back to New York. As we neared New York, the pilot declared that it was his fault, something to do with timing and him not being allowed into the country???? How could the airline let his happen? They had hours to prepare and make sure they had a crew available for the flight! We ended up in Toronto a day late with no sleep.

Rode in a smaller plane and short trip meant no snacks, no free wifi or tv. It was only 30min flight so honestly wasn’t a big deal to lack these items.

We were forced to wait nearly 50 additional minutes before leaving the terminal.

I appreciated friendly service from check-in, to boarding, to in-flight amenities! Attendants were accommodating and helpful. Thank you! Elaine

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Nothing they cancelled my connection and couldn't get me on a flight for 3 more days

The plane was dirty and the in seat air wasn't blowing as planes usually do.

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

Westjet was late and we missed our connecting flight with Cathay. Had to wait 8 hours. Westjet only allows 1 checked in baggage for international flights- it’s always been 2. Canada allows only 1 sandwhich bag size full off small liquids. Everything else will be tossed. Awful trip. Will never fly west jet or go to Toronto to connect flights!

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

Flight was on time. Online check in capabilities made things quick and easy. Zone boarding was enforced, which I appreciate. Everyone was not lining up ahead of their zone being called. Crew was professional and friendly.

Those flights were operated by Delta Airlines.. one of the reasons I booked them thru Expedia, even if the tickets are sold by WestJet. Service on board is good with Delta, but don't expect much snacks on inland flights in the US or to Canada. Their entertainment system was modernized, but not much new movies in the catalog.. Free Wi-Fi for Skymiles member aboard.

The big lady was sitting right next to me and the button to recline my seat was blocked by her huge arm. No power outlet for chargers. No inflight Wi-Fi movies

Trip was uneventful which is good. Boarding took a long time due to many disabled/elderly requiring assistance which again is fine. Landing and take off were excellent. Food and entertainment were as expected, bring your own if you have preferences otherwise you get what you get.

Okay but not like typical first or business class. On domestic airlines

I liked the kindness of the check in counter crew, the flexibility with changing seats and the comfort. Better free drink selection would have been good but it wasn't a long flight.

It was good overall but when I book my flight and seat through Kayak, AA will at times change those seats during check-in time which I don’t understand why. I always book aisle seats and had to sit at window for my flight to Austin this trip.

the seat was not padded at all - uncomfortable after a 3 hour flight

This flight was of course delayed because American cannot have flights that are not delayed.

I sat at the airport all night from 8 pm until midnight. The airline kept delaying the flight. They also kept moving us to different gates - 4 times. Then they told us we didn’t have a pilot so we had to wait. Then they cancelled the flight at midnight! I ended up having to rent a car to drive home. So i ended up not even being able to fly on the flight i paid for. Ridiculous, and no agents could help at all. I will not ever book this flight.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

Was a normal flight but it was delayed, and there wasn't an explanation.

Deplaning time. Having to wait 10 to 25 minutes after boarding to leave the gate. Having to wait 10 minutes to park at the gate to deplane.☹️

Boarding was disorganized and delayed because they overbooked and wanted people to give up seats then further delayed due to an issue with the plane. They did not load my bag and it took a day for them to return it. Flight attendant was lovely and the only positive thing about this trip.

When you pay for Premium Economy on an 787 and you’re promised amenities for the extra money, you expect them to work. They didn’t. USB connector wouldn’t charge continuously. 120v outlet wouldn’t hold anything you plugged into it. The adapter would just fall out. The noise canceling headphones stopped noise cancelling in the first 15 minutes for EVERYONE. No one on the plane knew how to fix it so I couldn’t listen to any movies. I just put in my AirPods and went to sleep. Very unhappy with the crappy Panasonic entertainment system. I won’t buy premium again.

My first time flying American Airlines, my first flight to CLT was wonderful and flight attendants was nice and had great customer service. My second flight from CLT to NY was very delayed due to whatever reason the crew was not greeting other than that I’m rate 8 .

Flight was overbooked and seats assigned to multiple passengers. Delay 1 hour to sort out.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

My experience with Air Canada was good. Great customer service… only a few delays and issues with the tunnel to exit the plain. I did not appreciate that we arrived at terminal D and had to go to terminal E to get the bags/ luggage.

Everything should be better, terrible flight and airport service. Delayed for 6 hours, flying around for 1 hr, and keeping us on a plane for another 2,5 -3hrs.

This flight was a lot more comfortable with more room than the Air Canada Rouge!!! We will never go rouge again! A yes to this one!!! It was so nice to have inflight entertainment! Also the carts came around twice for drinks or a snack!! Great experience all around!

Air Canada seats do not have much room compared to other airlines I’ve traveled with. Also, the lack of free WiFi is a negative. All airlines need to be better about this.

Delayed 2 hours 20 minutes. Then we still didn’t take off for another 45 minutes. Arrived in Toronto and no gate was ready for us so we were stuck on the tarmac for another hour. Missed my prebooked Uber and had to pay the cancelation fee plus book another one. Got home over 5 hours later than planned. Awful planning.

I paid for an exit row seat but it did not have a TV. Pretty bad for a 4 hour flight

3-hour layover in Chicago too long. Comfortable and spacious economy seat in Chicago-Ottawa leg.

Everything you need to know for your flight from San Antonio to Ontario

Information on your arrival and departure airports