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Find cheap flights from San Diego to Ontario from $117

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 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.
1 adult
0 bags
Wed 7/10
Wed 7/17

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Best Ontario Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Toronto
Toronto1 stop$258
Ottawa
Ottawa1 stop$562

Good to know

Low season

January

High season

July

Cheapest flight

$117
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from San Diego to Toronto Pearson Airport

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 to Ontario from San Diego 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 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 to Ontario with an airline and back to San Diego 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 to Ontario from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Morning departure is around 35% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from San Diego to Ontario

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
DeltaOverall score based on 10295 reviews
7.4Food
8.6Crew
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

4.0 OkayBrooke, Jun 2024SFO - MSP
Read more about Delta reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

terrible. Because I felt very unwell during the flight. How do they leave a woman alone in the middle of 2 men? an obese man who was falling on top of me.

They put me on a chair in between two men, one overweight who was almost falling on top of me, and the other was even uncomfortable because I was half falling because of what the other was pushing me. I stayed with. my feet were swollen from fluid retention and from being unable to accommodate myself. it was very uncomfortable. I asked for help but they told me that the flight was full and they couldn't help me. I got off the plane almost unable to walk due to the inflammation. and then at FLL airport I asked for help because I couldn't go to my next flight, which was a connection.

The walk from baggage claim to the taxi is very difficult for older people I will never fly into JFK again. It is physically challenging

Overall fine but both ways for this trip was delayed.

Flight was delayed by almost 5 hours. Suitcase was not loaded despite the flight being near empty (my colleagues’ suitcases did reach JFK, unlike mine). Had to argue on phone to get JetBlue to deliver the case to my hotel. Never again

The flight was excellent. The crew was welcoming and attentive.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

Run out of snack choices. Why are the seats not padded for your butt? Are we sitting on blocks of wood or metal for $250-300 a pop? This ain’t spirit. Let’s get it together people

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

Why does it have to be painful to fly long distances?

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

I had a great flight. Everything went smoothly and the flight arrived early.

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

On time take off…US cabins look tired and need of refresh!

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

There was a mistake with the first name we only discovered at security. Air canada was unable to correct it to match then passport since it was booked through an agency. The agency could not correct it either since they need at least two hours to do that. We could not fly and lost a bunch of money. Learned my lesson about kayak.

My flight got canceled. Then AC rebooked me to a next day flight. No compensation no apology. It almost messed up my entire trip and schedule. However, all the unexpepected seems routine and ordinary to AC, so customers need to get used to.

I love air Canada. The staff is so helpful and friendly and attentive. I paid for extra room but chose a ser near a person who took up a lot of space which gave me less space than regular economy, I was sad I did that!

Did not appreciate “hidden fees” to check a bag for international flight and purchase a seat to be next to my spouse. Won’t choose this airline again.

No meal. Flight crew was wonderful, happily finding me storage for my guitar. THANK YOU!!!

The original flight from Boston to Toronto was canceled because of a mechanical failure. I was then scheduled on a flight to go from Boston to Montreal and then Montreal to Toronto. The flight was extremely full and I had to check my carry-on bag. When I actually got on the plane there appeared to be room for my bag. I understand the mechanical failures happen. But it was frustrating that they pestered me to check my bag when I don't believe it was necessary. Additionally, not just with Air Canada, modern airline seats are incredibly uncomfortable. There is considerable research that shows that the shape of them is poor for back health.

Unable to initiate refund/reschedule the ticket #worst experience #lost 900$

Flight was delayed for almost 3 hours. Communication of gate change was poor. Email and screen said one gate and it was a different gate from that. Gate changed first to 64 B and then to 64 C. Originally it was 68B. 64C was not communicated properly!

This was a red eye return, so I doubt there would be anyway to make it better. Other than adding beds.

Direct nonstop flight was great. Flight was delayed and the crew announced a 2h delay on the sound system. 30 min or so later I hear my name on the sound system for immediate board. Several other passangers were late too. Reason: The crew incorrectly announced a 2h delay when in reality they meant a new boarding time at 2pm.

Book cheap flights from San Diego to Ontario

Recent round-trip flight deals

8/13Tue
1 stop
8h 36mSAN-YYZ
8/19Mon
1 stop
17h 14mYYZ-SAN
$258
9/14Sat
1 stop
30h 54mSAN-YYZ
9/21Sat
1 stop
10h 21mYYZ-SAN
$260
9/14Sat
1 stopAir Canada
10h 34mSAN-YTZ
9/21Sat
1 stopAir Canada
10h 26mYTZ-SAN
$387
9/14Sat
1 stopUnited Airlines
8h 01mSAN-YYZ
9/21Sat
2 stopsUnited Airlines
9h 14mYYZ-SAN
$443
6/28Fri
nonstopUnited Airlines
4h 50mSAN-YYZ
7/5Fri
nonstopUnited Airlines
5h 10mYYZ-SAN
$449
7/22Mon
nonstopAir Canada
5h 17mSAN-YUL
7/29Mon
nonstopAir Canada
5h 52mYUL-SAN
$454
6/24Mon
1 stopDelta
9h 42mSAN-YYZ
6/27Thu
1 stopDelta
8h 58mYYZ-SAN
$534
7/23Tue
2 stopsAmerican Airlines
10h 19mSAN-YYZ
7/30Tue
1 stopAmerican Airlines
10h 46mYYZ-SAN
$544
7/22Mon
1 stopDelta
21h 33mSAN-YUL
7/28Sun
1 stopDelta
8h 23mYUL-SAN
$597
7/19Fri
1 stopAmerican Airlines
13h 45mSAN-YUL
7/31Wed
1 stopAmerican Airlines
11h 00mYUL-SAN
$614

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Recent one-way flight deals

9/30Mon
1 stop
14h 52mSAN-YYZ
$117
7/13Sat
1 stop
11h 16mSAN-YYZ
$130
8/16Fri
nonstopUnited Airlines
4h 50mSAN-YYZ
$200
6/25Tue
nonstopUnited Airlines
5h 17mSAN-YUL
$200
6/25Tue
nonstopAir Canada
4h 50mSAN-YYZ
$203
7/16Tue
nonstopAir Canada
5h 17mSAN-YUL
$203
8/13Tue
2 stopsDelta
13h 55mSAN-YUL
$240
6/25Tue
1 stopDelta
13h 13mSAN-YUL
$255
10/27Sun
1 stopAmerican Airlines
14h 43mSAN-YUL
$294
8/8Thu
2 stopsAmerican Airlines
12h 09mSAN-YUL
$299

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Last minute flights from San Diego to Ontario

Last minute flight, train and bus deals

6/13Thu
multi-stop
19h 29mSAN-YYZ
6/15Sat
multi-stop
12h 53mYYZ-SAN
$479
6/12Wed
multi-stopUnited Airlines
9h 16mSAN-YYZ
6/24Mon
nonstopUnited Airlines
5h 10mYYZ-SAN
$505
6/13Thu
multi-stop
19h 29mSAN-YYZ
6/15Sat
multi-stop
15h 03mYYZ-SAN
$512
6/15Sat
multi-stopDelta
7h 45mSAN-YYZ
6/18Tue
multi-stopDelta
13h 04mYYZ-SAN
$534
6/13Thu
multi-stopDelta
7h 17mSAN-YYZ
6/26Wed
multi-stopDelta
9h 19mYYZ-SAN
$550
6/14Fri
multi-stopAir Canada
8h 18mSAN-YUL
6/19Wed
nonstopAir Canada
5h 52mYUL-SAN
$557
6/14Fri
multi-stopAir Canada
8h 18mSAN-YUL
6/19Wed
multi-stopAir Canada
8h 10mYUL-SAN
$568
6/13Thu
multi-stopAmerican Airlines
10h 08mSAN-YYZ
7/31Wed
multi-stopAmerican Airlines
9h 48mYYZ-SAN
$619
6/15Sat
multi-stopAmerican Airlines
10h 19mSAN-YYZ
6/18Tue
multi-stopAmerican Airlines
9h 44mYYZ-SAN
$646
6/13Thu
multi-stopAlaska Airlines
13h 40mSAN-YYZ
6/26Wed
multi-stopAlaska Airlines
11h 19mYYZ-SAN
$1,296

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San Diego - Ontario Flights

Departure:

San Diego (SAN)United States

Return flight deals:

Ontario - San Diego

Cabin classes:

$948
$1,586
$230