C$ 157 Find Cheap Flights from San Diego 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 Diego to Ontario departing on 19/8. 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 Diego 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 Diego to Ontario, as well as popular online travel agencies
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Best Ontario Flight Deals from San Diego

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa2 stopsC$ 477
London
London2 stopsC$ 527
Ottawa
Ottawa2 stopsC$ 477
London
London2 stopsC$ 527

Cheap Flights from San Diego to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego 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 Diego to Ontario

Tue, 9 Sep - Tue, 16 Sep
 Logo
6:15 a.m. - 7:45 p.m.SAN-YYZ
10h 30m1 stop
 Logo
9:30 a.m. - 11:24 p.m.YYZ-SAN
16h 54m1 stop
C$ 353
Find Deal
Thu, 4 Sep - Wed, 10 Sep
 Logo
8:25 a.m. - 7:45 p.m.SAN-YYZ
8h 20m1 stop
 Logo
9:45 a.m. - 6:42 p.m.YYZ-SAN
11h 57m1 stop
C$ 366
Find Deal
Thu, 18 Sep - Thu, 25 Sep
WestJet Logo
1:00 p.m. - 5:51 a.m.SAN-YYZ
13h 51m2 stops
WestJet Logo
6:30 a.m. - 1:20 p.m.YYZ-SAN
9h 50m1 stop
C$ 436WestJet
Find Deal
Thu, 27 Nov - Wed, 3 Dec
Air Canada Logo
6:10 p.m. - 10:23 a.m.SAN-YUL
13h 13m2 stops
Air Canada Logo
9:00 a.m. - 5:24 p.m.YUL-SAN
11h 24m1 stop
C$ 440Air Canada
Find Deal
Fri, 28 Nov - Wed, 3 Dec
Air Canada Logo
12:45 p.m. - 5:38 a.m.SAN-YYZ
13h 53m2 stops
Air Canada Logo
8:00 a.m. - 5:24 p.m.YYZ-SAN
12h 24m2 stops
C$ 447Air Canada
Find Deal
Thu, 27 Nov - Wed, 3 Dec
American Airlines Logo
11:00 p.m. - 3:25 p.m.SAN-YYZ
13h 25m1 stop
American Airlines Logo
1:10 p.m. - 6:31 p.m.YYZ-SAN
8h 21m1 stop
C$ 454American Airlines
Find Deal
Thu, 21 Aug - Tue, 26 Aug
WestJet Logo
11:15 a.m. - 12:46 a.m.SAN-YKF
10h 31m1 stop
WestJet Logo
6:00 a.m. - 1:20 p.m.YKF-SAN
10h 20m1 stop
C$ 459WestJet
Find Deal
Tue, 19 Aug - Wed, 20 Aug
American Airlines Logo
10:54 p.m. - 12:16 p.m.SAN-YUL
10h 22m1 stop
American Airlines Logo
3:44 p.m. - 8:22 a.m.YUL-SAN
19h 38m1 stop
C$ 491American Airlines
Find Deal
Fri, 22 Aug - Wed, 27 Aug
United Airlines Logo
9:45 p.m. - 3:00 p.m.SAN-YUL
14h 15m1 stop
United Airlines Logo
6:15 a.m. - 3:03 p.m.YUL-SAN
11h 48m2 stops
C$ 545United Airlines
Find Deal
Fri, 5 Sep - Thu, 11 Sep
United Airlines Logo
4:11 p.m. - 10:40 a.m.SAN-YUL
15h 29m2 stops
United Airlines Logo
6:30 p.m. - 12:15 a.m.YUL-SAN
8h 45m1 stop
C$ 555United Airlines
Find Deal
Booking Insights

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

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

What is the cheapest San Diego to Ontario flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from San Diego to Ontario.

The cheapest ticket to Ontario from San Diego found in the last 72 hours was to Toronto, at C$ 164 round-trip. The most popular route is from San Diego (SAN) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 164.

Can I save money by flying with a layover from San Diego 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at C$ 301 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego 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 Diego to Ontario is January, when tickets cost C$ 368 (return) on average. On the other hand, the most expensive months are October and September, when the average cost of round-trip tickets is C$ 665 and C$ 644 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to Ontario on a Tuesday and more expensive on a Saturday. On your return trip to San Diego, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

How far in advance should I book a flight from San Diego 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 Diego 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 a flight from San Diego to Ontario, you should book around 4 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.


Good to know

Low seasonFebruary
Cheapest flightC$ 157
Best time to beat the crowds (41% less expensive on average)
Most popular time to fly and prices are also 0% lower on average.
Flight from San Diego to Toronto

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from San Diego 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 Diego to Ontario.

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

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

  • What is the Hacker Fare option on flights from San Diego 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 Diego 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 Diego 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 Diego 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 C$ 269 on average. The most expensive time of day to fly to Ontario is generally at night, which is peak travel time and where the average cost of a ticket is C$ 329.

Top tips for finding cheap flights to Ontario

  • Looking for a cheap flight? 25% of our users found tickets from San Diego to the following destinations at these prices or less: Toronto C$ 286 one-way - C$ 469 round-trip

Reviews of the top 3 airlines flying from San Diego to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Diego 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 Diego 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.
8.0
Porter AirlinesOverall score based on 318 reviews
8.0Comfort
8.7Crew
8.2Boarding
7.6Food
7.0Entertainment
Airline reviews

All good the seats a little tight and no I pad screen

10.0 ExcellentAnonymous, Jul 2025YYZ - RSW
Read more Porter Airlines reviews

All good the seats a little tight and no I pad screen

Everything was good except the fact you charge more for a carry on bag vs a check in bag and to top it off in US$ that was not impressive

Our flight was cancelled at the last minute for maintenance reasons and we were rebooked on a late flight when we purposefully booked our flight to be home early due to work.

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

Flight was delayed over 2 hours, then landed at a different airport!

The whole experience from check in to deboarding was fantastic.

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

Great! Personable crew. I love that they pour complimentary beer and wine.

I love the 2 seats per row. More room. The crew were excellent.

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.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

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.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

No Charging ports for personal electronics, which were required to use wifi entertainment.

I liked nothing about this flight nor the incredible lack of service and communication on this flight from the Captain to every staff member. Arrogant, entitled and lacking any kind of basic customer service

I booked my flight ni November and was placed on standby? How does this happen. Flight was 1 1/2 hours late departure plane was switched to a smaller plane easy to tell this is a government run company they don’t care about anyone

Plane was old, cabin was small, overhead bins were small, seats really uncomfortable, no seat-back entertainment

I had a disappointing experience at the San Diego airport with one of your gate agents. Despite being in Zone 4 and traveling with a standard carry-on bag that has never been an issue (30 flights in Q4 alone), the tall, blonde gentleman forced me to gate-check my bag. When I politely asked if we could verify the bag’s size, he became confrontational, even threatening to deny me boarding twice. His behavior appeared erratic and unprofessional, projecting a negative attitude onto passengers, as if he was going through something mentally. Notably, there was ample overhead space once all passengers had boarded. In contrast, the tall, older Asian agent handled the situation with professionalism and calmness, making a clear effort to de-escalate. As an avid traveler, this unnecessary inconvenience set a frustrating tone for my trip to Asia.

The fact that we have to check in our carryons when we met the requirements and there was plenty of spaces near we sat was ridiculous

Problem with operation of on board entertainment computer. Failed about 1 /2 hour into the flight. Rebooting failed to restore.

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

Information on your arrival and departure airports

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