C$ 144 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 7/7. 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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Flights Deals

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$ 377
London
London2 stopsC$ 484
Ottawa
Ottawa2 stopsC$ 377
London
London2 stopsC$ 484

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

Mon, 25 Aug - Thu, 28 Aug
WestJet Logo
2:05 p.m. - 5:51 a.m.SAN-YYZ
12h 46m2 stops
WestJet Logo
6:30 a.m. - 1:20 p.m.YYZ-SAN
9h 50m1 stop
C$ 333WestJet
Find Deal
Thu, 31 Jul - Mon, 11 Aug
WestJet Logo
1:00 p.m. - 6:12 a.m.SAN-YYZ
14h 12m2 stops
WestJet Logo
6:30 a.m. - 1:20 p.m.YYZ-SAN
9h 50m1 stop
C$ 336WestJet
Find Deal
Mon, 4 Aug - Wed, 13 Aug
 Logo
2:05 p.m. - 5:51 a.m.SAN-YYZ
12h 46m2 stops
 Logo
2:00 p.m. - 7:38 p.m.YYZ-SAN
8h 38m1 stop
C$ 344
Find Deal
Mon, 4 Aug - Wed, 13 Aug
 Logo
2:05 p.m. - 5:51 a.m.SAN-YYZ
12h 46m2 stops
 Logo
9:20 a.m. - 11:35 a.m.YYZ-SAN
5h 15mdirect
C$ 350
Find Deal
Sat, 30 Aug - Sun, 31 Aug
United Airlines Logo
7:21 p.m. - 8:16 a.m.SAN-YUL
9h 55m1 stop
United Airlines Logo
11:23 a.m. - 7:09 p.m.YUL-SAN
10h 46m1 stop
C$ 390United Airlines
Find Deal
Thu, 14 Aug - Mon, 18 Aug
Air Canada Logo
8:10 a.m. - 4:39 p.m.SAN-YUL
5h 29mdirect
Air Canada Logo
4:45 p.m. - 7:38 p.m.YUL-SAN
5h 53mdirect
C$ 403Air Canada
Find Deal
Thu, 14 Aug - Mon, 18 Aug
Air Canada Logo
8:10 a.m. - 4:39 p.m.SAN-YUL
5h 29mdirect
Air Canada Logo
4:45 p.m. - 7:38 p.m.YUL-SAN
5h 53mdirect
C$ 416Air Canada
Find Deal
Wed, 10 Sep - Thu, 11 Sep
American Airlines Logo
1:17 p.m. - 11:46 a.m.SAN-YUL
19h 29m1 stop
American Airlines Logo
3:44 p.m. - 9:50 p.m.YUL-SAN
9h 06m1 stop
C$ 417American Airlines
Find Deal
Thu, 31 Jul - Tue, 12 Aug
United Airlines Logo
5:30 p.m. - 2:04 p.m.SAN-YOW
17h 34m1 stop
United Airlines Logo
6:33 a.m. - 11:33 a.m.YOW-SAN
8h 00m1 stop
C$ 430United Airlines
Find Deal
Mon, 7 Jul - Fri, 11 Jul
American Airlines Logo
7:30 p.m. - 11:40 a.m.SAN-YUL
13h 10m2 stops
American Airlines Logo
7:47 a.m. - 3:25 p.m.YUL-SAN
10h 38m2 stops
C$ 559American Airlines
Find Deal
Useful Info

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$ 175 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$ 175.

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$ 225 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$ 363 (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$ 680 and C$ 635 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 Thursday 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 the flight from San Diego to Ontario, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.


Good to know

Low seasonFebruary
High seasonJune
Cheapest flightC$ 144
Best time to beat the crowds (41% less expensive on average)
Most popular time to fly (2% more expensive 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$ 465.

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$ 240 one-way - C$ 249 round-trip

Reviews of the top 3 airlines serving 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 289 reviews
8.2Boarding
7.0Entertainment
7.6Food
8.1Comfort
8.7Crew
Airline reviews

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

10.0 ExcellentSteve, Jun 2025LAS - YOW
Read more Porter Airlines reviews

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.

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

Overall very good... staff were friendly and helpful. boarding was good for the most part, but a little hard to get our carry-on bags on there.... I think people should be directed to keep their coats and small bags with them until all the carry-ons are loaded, and then, if there is space, they can put their small bags and coats up top.. makes it much easier to put baggage up. i loved the internet feature, but the entertainment was not there unless you have your own Netflix or similar platform. My chair did not recline, which was very annoying, and the arms won't go up near the isle, which makes it tough to get in and out of the seat.

Staff were excellant. Only snacks served. Some turbulence so we were offered Free beer or wine.

The staff is always great. Just the fact that our flight was the only one delayed from Halifax when all other carries were still flying. It happen a year ago out of Toronto as well. All others were flying but our flight got cancelled 1 hr before the time of departure.

The only issue had when i mentioned about comfort was the man beside me was on the larger side and took about 1/3 of my seat where i was pressed against the wall/window of the plane for the trip.

The check-in staff, boarding staff, and flight crew were all very friendly. Really miss the Porter lounge in Ottawa.

Thanks for giving a beer to everyone in the seat infront of me and then telling me that I can’t have one because they are going to land. I guess I need to pay for a seat and then pick one in the very front of the plane

The flight was delayed by more than one hour. The terminal was consequently overcrowded and hot. We lost our car reservation and hit rush hour traffic in Boston, which added two hours stuck in traffic to our trip.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

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.

. Crew was professional and friendly. Food could have been hotter

Terrible. They cancelled our flight the night before. Please give me a call to discuss.

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

Information on your arrival and departure airports

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