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Cheap flights from Ontario to San Diego from C$ 202

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAN
14 Oct — 21 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ontario to San Diego

Keep the following information in mind while searching for Ontario to San Diego flight deals. Data was last updated 14 September 2025.

Round-trip from

C$ 382

One-way from

C$ 202

Popular in

December

Cheapest in

April

Average price

C$ 522

Good round-trip deal

C$ 498 or less

Good one-way deal

C$ 283 or less
8/10-11/10
  • 8/10-11/10
  • 4 total stops
  • 32h 32m total
  • Ontario to San Diego
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13/10
  • 13/10
  • 2 total stops
  • 31h 15m total
  • Ontario to San Diego
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Highest demand for flights based on searches. 5% potential increase in price (C$ 40 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Ontario to San Diego.
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Price to beat on a one-way flight from Ontario to San Diego.
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Find flight deals from Ontario to San Diego

Cheapest flights from Ontario to San Diego
Explore the most affordable flight options available from Ontario to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.

Wed 8/1011:00 a.m.YYZ - SAN
2 stops13h 20mMultiple Airlines
Sat 11/108:00 a.m.SAN - YYZ
2 stops19h 12mMultiple Airlines
Deal found 13/9C$ 382
Fri 17/108:05 p.m.YYZ - SAN
1 stop15h 10mMultiple Airlines
Wed 22/108:00 a.m.SAN - YYZ
1 stop8h 58mMultiple Airlines
Deal found 12/9C$ 383
Sun 21/910:25 p.m.YYZ - SAN
2 stops27h 52mMultiple Airlines
Wed 24/98:00 a.m.SAN - YYZ
1 stop8h 58mMultiple Airlines
Deal found 13/9C$ 385
Thu 6/119:45 a.m.YYZ - SAN
1 stop9h 35mMultiple Airlines
Sat 8/115:00 p.m.SAN - YYZ
1 stop10h 20mMultiple Airlines
Deal found 12/9C$ 386
Wed 15/109:30 a.m.YYZ - SAN
1 stop14h 50mMultiple Airlines
Tue 21/108:00 a.m.SAN - YYZ
2 stops11h 52mMultiple Airlines
Deal found 13/9C$ 388
Tue 7/1010:00 a.m.YYZ - SAN
2 stops14h 20mMultiple Airlines
Sat 18/102:05 p.m.SAN - YYZ
1 stop13h 07mMultiple Airlines
Deal found 14/9C$ 389
Sun 2/1112:30 p.m.YYZ - SAN
2 stops14h 18mMultiple Airlines
Sat 8/115:00 p.m.SAN - YYZ
1 stop10h 20mMultiple Airlines
Deal found 12/9C$ 390
Tue 7/1010:00 a.m.YYZ - SAN
2 stops14h 20mMultiple Airlines
Fri 17/102:05 p.m.SAN - YYZ
1 stop13h 47mMultiple Airlines
Deal found 14/9C$ 392
Sat 20/99:00 a.m.YYZ - SAN
3 stops17h 34mMultiple Airlines
Wed 24/96:15 a.m.SAN - YYZ
1 stop10h 43mMultiple Airlines
Deal found 12/9C$ 393
Wed 8/1010:00 a.m.YYZ - SAN
2 stops14h 20mMultiple Airlines
Fri 17/102:05 p.m.SAN - YYZ
1 stop13h 47mMultiple Airlines
Deal found 14/9C$ 396
Fri 31/107:55 p.m.YYZ - SAN
1 stop15h 45mMultiple Airlines
Thu 13/113:59 p.m.SAN - YYZ
1 stop11h 21mMultiple Airlines
Deal found 13/9C$ 397
Tue 25/117:45 a.m.YOW - SAN
1 stop12h 39mAir Canada
Tue 2/126:10 p.m.SAN - YOW
1 stop9h 33mAir Canada
Deal found 12/9C$ 406

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 14 September 2025.
Use the filters below to find and compare flights from Ontario to San Diego that are best for you.

Fly from

Ontario

Fly to

San Diego

Route

Depart

Return

Price

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Tue 14/10

6:30 a.m.-9:20 p.m.

2 stops41h 50m

San Diego

Thu 16/10

6:25 a.m.-7:58 p.m.

1 stop10h 33m

C$ 382

TorontoSan Diego

YKF - SAN

YKFSAN

Toronto Region of Waterloo Intl

Sat 7/2

7:00 p.m.-11:47 a.m.

1 stop19h 47m

San Diego

Fri 13/2

12:35 p.m.-5:29 a.m.

1 stop13h 54m

C$ 408

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sun 2/11

2:10 p.m.-11:45 a.m.

1 stop24h 35m

San Diego

Sat 8/11

5:00 p.m.-6:20 a.m.

1 stop10h 20m

C$ 419

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Tue 25/11

5:14 p.m.-10:20 p.m.

1 stop8h 06m

San Diego

Tue 2/12

9:55 p.m.-2:27 p.m.

1 stop13h 32m

C$ 425

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Fri 28/11

5:14 p.m.-10:20 p.m.

1 stop8h 06m

San Diego

Sat 6/12

5:45 p.m.-10:26 a.m.

2 stops13h 41m

C$ 429

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Wed 4/3

6:20 a.m.-2:56 p.m.

2 stops11h 36m

San Diego

Thu 5/3

8:50 p.m.-10:07 a.m.

2 stops10h 17m

C$ 429

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Fri 7/11

11:10 a.m.-11:44 p.m.

2 stops15h 34m

San Diego

Tue 11/11

7:50 p.m.-10:26 a.m.

2 stops11h 36m

C$ 429

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Thu 27/11

6:20 a.m.-11:31 a.m.

1 stop8h 11m

San Diego

Sat 6/12

7:00 a.m.-9:18 p.m.

1 stop11h 18m

C$ 429

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Wed 1/10

9:45 a.m.-11:34 p.m.

1 stop16h 49m

San Diego

Wed 8/10

8:00 a.m.-7:58 p.m.

1 stop8h 58m

C$ 430

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Tue 11/11

10:15 p.m.-11:45 a.m.

1 stop16h 30m

San Diego

Sat 15/11

5:00 p.m.-1:40 p.m.

2 stops17h 40m

C$ 444

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Region of Ontario to San Diego?

Currently, May is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of C$ 289). Flying from Region of Ontario to San Diego in November is currently the most expensive (average of C$ 390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to SAN?

Find hourly flight availability from Ontario to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 September 2025.

When flying from Region of Ontario to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Region of Ontario to San Diego

Explore weekly flight availability from Ontario to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 14 September 2025.

The most flights from CAON to SAN are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Ontario to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Ontario?

    San Diego (SAN), located 4.2 km from the city centre, is the airport you fly into when you book flights from Ontario to San Diego.

  • How long is the flight from Region of Ontario to San Diego?

    Departing from Region of Ontario to San Diego will take you 8h 06m. The distance between Region of Ontario and San Diego is about 3798 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Region of Ontario to San Diego one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 251. Air Canada flights start at C$ 288 while deals on United Airlines start at C$ 300 one-way.

  • What are the most popular routes from Region of Ontario to San Diego?

    Most travellers choose Toronto Pearson Intl - San Diego, Montreal Pierre Elliott Trudeau Intl - San Diego or Toronto Island - San Diego when deciding on the best route from Region of Ontario to San Diego.

  • What are the most reliable airlines from Region of Ontario to San Diego?

    The top 3 most reliable airlines when flying from Region of Ontario to San Diego are Air Canada Rouge (100%), Air Canada (91%) and United Airlines (82%).

  • What are the cheapest flights from Region of Ontario to San Diego?

    While on average a flight from Region of Ontario to San Diego is generally C$ 496, our data shows the cheapest flight currently is C$ 225. When looking at the most popular route, (Toronto Pearson Intl - San Diego), you can expect to pay C$ 332 for that flight.

  • Can I find deals for flights from Ontario to San Diego that include hotel bookings?

    Yes. In addition to deals on Ontario to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Diego.

  • Can I find deals for business class flights from Ontario to San Diego?

    Yes. Cheapflights offers flight deals from Ontario to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to San Diego?

    Currently, May is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of C$ 289). Flying from Region of Ontario to San Diego in November is currently the most expensive (average of C$ 390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Borrego Springs
El Cajon

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Alternative routes for Ontario to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Ontario to San Diego

Discover the top 8 airlines that operate flights from Ontario to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 14 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 249AverageC$ 469FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 250AverageC$ 422FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
American AirlinesCheapestC$ 294AverageC$ 549FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 307AverageC$ 480FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 308AverageC$ 569FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 320AverageC$ 460FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 333AverageC$ 442FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 406AverageC$ 865FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to San Diego?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to San Diego. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to San Diego?

Cheapflights simply makes it quick and affordable to book flights from Ontario to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to San Diego with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to San Diego with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to San Diego become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

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