$122 Find Cheap Flights from San Antonio to Ontario

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 10/14. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Ontario, as well as popular online travel agencies
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Flight Deals

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

Wed, Oct 8 - Wed, Oct 15
 Logo
6:16 pm - 6:59 amSAT-YYZ
11h 43m1 stop
 Logo
9:45 am - 4:47 amYYZ-SAT
20h 02m1 stop
Wed, Oct 8 - Wed, Oct 15
 Logo
6:16 pm - 6:59 amSAT-YYZ
11h 43m1 stop
 Logo
2:00 pm - 4:47 amYYZ-SAT
15h 47m2 stops
Mon, Sep 22 - Tue, Sep 23
United Airlines Logo
5:15 pm - 10:40 amSAT-YUL
16h 25m1 stop
United Airlines Logo
2:20 pm - 10:58 pmYUL-SAT
9h 38m2 stops
$466United Airlines
Find Deal
Mon, Sep 15 - Wed, Oct 15
United Airlines Logo
1:20 pm - 10:23 pmSAT-YYZ
8h 03m1 stop
United Airlines Logo
7:00 am - 11:58 amYYZ-SAT
5h 58m1 stop
$470United Airlines
Find Deal
Mon, Oct 13 - Fri, Oct 17
American Airlines Logo
6:00 am - 2:49 pmSAT-YUL
7h 49m1 stop
American Airlines Logo
3:44 pm - 8:19 amYUL-SAT
17h 35m1 stop
$490American Airlines
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Fri, Oct 24 - Sun, Oct 26
American Airlines Logo
3:02 pm - 10:29 pmSAT-YYZ
6h 27m1 stop
American Airlines Logo
6:49 am - 3:47 pmYYZ-SAT
9h 58m1 stop
$518American Airlines
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Fri, Sep 12 - Sun, Sep 14
Delta Logo
6:35 am - 5:50 pmSAT-YUL
10h 15m1 stop
Delta Logo
7:00 am - 5:06 pmYUL-SAT
11h 06m1 stop
$546Delta
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Mon, Dec 22 - Sat, Dec 27
WestJet Logo
4:05 pm - 10:40 pmSAT-YYZ
5h 35m1 stop
WestJet Logo
2:00 pm - 10:42 pmYYZ-SAT
9h 42m1 stop
$566WestJet
Find Deal
Sat, Dec 20 - Tue, Dec 23
WestJet Logo
5:25 am - 10:40 pmSAT-YYZ
16h 15m1 stop
WestJet Logo
6:00 am - 3:20 pmYYZ-SAT
10h 20m1 stop
$568WestJet
Find Deal
Fri, Sep 5 - Sun, Sep 7
Delta Logo
3:50 pm - 11:08 pmSAT-YUL
6h 18m1 stop
Delta Logo
7:00 am - 12:24 pmYUL-SAT
6h 24m1 stop
$688Delta
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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?

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 January, when tickets cost $353 (return) on average. On the other hand, the most expensive months are February and August, when the average cost of round-trip tickets is $613 and $553 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 Sundays if you are looking for the best rates. For your return to San Antonio, you’ll find the best rates on Wednesdays and the most expensive ones on Fridays.

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 6 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$122
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from San Antonio to Toronto

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.

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

    The cheapest time of day to fly to Ontario is generally in the afternoon, when round-trip flights cost $384 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the evening, which is peak travel time and where the average cost of a ticket is $440.

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.
7.9
DeltaOverall score based on 7979 reviews
7.9Entertainment
7.9Comfort
8.5Crew
7.3Food
8.2Boarding
Airline reviews

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

4.0 Okaypuravi, Aug 2025LGA - STL
Read more Delta reviews

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

A little bit more leg room in premium economy. I am 6’4”.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Flight was actually on Air Canada. The flight itself was fine. Nothing special. Food was pretty pathetic except for cookies. They offered plenty of food and drinks but just wasn't very good. Even for airline food.

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

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Very poor delay in dfw was really bad n long

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

Flight was delayed again and again ultimately almost three hours getting us to our location at close to midnight by the time we got in and out of airport to destination. I had taken time off work to enjoy an evening at destination and that was now wasted

The keg from Edmonton to Toronto My wife found it very cold. Other than that great flight.

Smooth flight Staff were courteous and welcoming upon entering and exiting the plane Pilot and crew provided frequent updates Leg space was not pleasant but manageable

Everything was good except I was a bit disappointed that I had to pay US $150 for bags.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

The flight attendants were super! They created a cosy and warm flight atmosphere!

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.

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

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.

No access to any entertainment No food other than a cookie or pretzels even tho flight was over the supper hour Seats very close together and very little leg room Staff was very good

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

Check in staff was incredibly rude and condescending. When I arrived at the gate I had been charged $125 for a checked back. I did have or check a bag. When I brought this to the attention of the staff member who checked me in, she said that she made a mistake and there was nothing she could do about it. I asked her to remove the charge and refund credit card, she said she could not and that I had to call my credit card company to contest the charge. I called Air Canada customer support, was put on hold, after 43 minutes a received a messages stating customer service was overwhelmed with calls and was then hung up on.

Refreshments and Air Hostess was good. Issues with customs in Toronto caused flight to depart and left me behind twice. Vouchers for delayed flight needs to increase.

Long wait to check in at the priority counter in Toronto

I had no communication, receipt etc from Air Canada until hours before flight

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

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.

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

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