C$ 141 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 27/5. 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

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
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
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$ 444
London
London2 stopsC$ 576
Ottawa
Ottawa2 stopsC$ 444
London
London2 stopsC$ 576

Cheap Flight Deals from San Diego to Ontario (SAN-CAON)

 
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.

Recent round-trip flight deals from San Diego to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Diego to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
8:48 p.m. - 6:12 a.m.SAN-YYZ
30h 24m2 stops
 Logo
9:00 a.m. - 7:13 a.m.YYZ-SAN
25h 13m3 stops
C$ 381
Find Deal
Tue, 3 Jun - Tue, 10 Jun
 Logo
8:48 p.m. - 10:54 p.m.SAN-YYZ
23h 06m2 stops
 Logo
8:05 p.m. - 11:57 a.m.YYZ-SAN
18h 52m1 stop
C$ 383
Find Deal
Tue, 3 Jun - Tue, 10 Jun
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$ 425WestJet
Find Deal
Thu, 10 Jul - Tue, 5 Aug
Porter Airlines Logo
1:55 p.m. - 9:45 p.m.SAN-YYZ
4h 50mdirect
Porter Airlines Logo
10:45 a.m. - 12:55 p.m.YYZ-SAN
5h 10mdirect
C$ 426Porter Airlines
Find Deal
Wed, 11 Jun - Fri, 13 Jun
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$ 435WestJet
Find Deal
Sat, 14 Jun - Tue, 24 Jun
Porter Airlines Logo
1:55 p.m. - 9:45 p.m.SAN-YYZ
4h 50mdirect
Porter Airlines Logo
10:45 a.m. - 12:55 p.m.YYZ-SAN
5h 10mdirect
C$ 440Porter Airlines
Find Deal
Fri, 16 May - Fri, 23 May
Air Canada Logo
5:00 p.m. - 10:40 a.m.SAN-YUL
14h 40m1 stop
Air Canada Logo
8:05 a.m. - 5:14 p.m.YUL-SAN
12h 09m1 stop
C$ 443Air Canada
Find Deal
Sat, 14 Jun - Sat, 21 Jun
Air Canada Logo
8:00 a.m. - 4:27 p.m.SAN-YUL
5h 27mdirect
Air Canada Logo
4:45 p.m. - 7:45 p.m.YUL-SAN
6h 00mdirect
C$ 444Air Canada
Find Deal
Mon, 26 May - Tue, 3 Jun
United Airlines Logo
10:30 p.m. - 3:46 p.m.SAN-YYZ
14h 16m1 stop
United Airlines Logo
9:35 a.m. - 11:50 a.m.YYZ-SAN
5h 15mdirect
C$ 498United Airlines
Find Deal
Fri, 13 Jun - Fri, 20 Jun
United Airlines Logo
10:30 p.m. - 5:24 p.m.SAN-YUL
15h 54m1 stop
United Airlines Logo
4:45 p.m. - 7:38 p.m.YUL-SAN
5h 53mdirect
C$ 502United Airlines
Find Deal
Thu, 28 Aug - Sun, 31 Aug
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$ 208 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$ 208.

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.

No, with an average price for the route of C$ 617, prices are generally cheapest when you fly direct.

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$ 370 (return) on average. On the other hand, the most expensive months are August and September, when the average cost of round-trip tickets is C$ 705 and C$ 699 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 18 weeks before departure.


Good to know

Low seasonFebruary
High seasonAugust
Cheapest flightC$ 141
Best time to beat the crowds (43% less expensive on average)
Most popular time to fly (29% 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$ 267 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$ 410.

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$ 225 one-way - C$ 225 round-trip

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 285 reviews
7.0Entertainment
8.8Crew
8.2Boarding
8.1Comfort
7.6Food
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2025YHZ - YOW
Read more Porter Airlines reviews

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.

Awesome, the whole way through. Thank you, this is the new Canadian Airline benchmark.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

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.

Very pleasant crew! Good entertainment options. Water wasn’t working in the bathrooms, but they were able to fix it. Just had to stand with sticky soap hands for 20min….

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.