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San Diego

$136+ Cheap flights from Ontario to San Diego (SAN)

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAN
dic. 12 — dic. 191
vie. 12/12
vie. 12/19
1 adult, Economy
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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 noviembre 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/39:35 amYYZ - SAN
1 stop13h 43mMultiple Airlines
vie. 12/53:05 pmSAN - YYZ
2 stops14h 33mMultiple Airlines
Deal found 11/10$336
This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/39:35 amYYZ - SAN
1 stop9h 45mMultiple Airlines
mié. 12/241:06 pmSAN - YYZ
1 stop27h 49mMultiple Airlines
Deal found 11/10$339
This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/79:45 amYYZ - SAN
1 stop25h 54mMultiple Airlines
dom. 12/143:18 pmSAN - YYZ
1 stop12h 29mMultiple Airlines
Deal found 11/10$340
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/148:00 pmYYZ - SAN
1 stop14h 21mMultiple Airlines
jue. 12/251:06 pmSAN - YYZ
1 stop14h 41mMultiple Airlines
Deal found 11/9$341
This Kiwi.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/169:35 amYYZ - SAN
1 stop9h 45mMultiple Airlines
dom. 12/214:02 pmSAN - YYZ
1 stop11h 45mMultiple Airlines
Deal found 11/12$342
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/269:35 amYYZ - SAN
1 stop8h 52mMultiple Airlines
lun. 12/16:52 pmSAN - YYZ
1 stop22h 03mMultiple Airlines
Deal found 11/11$343
This Trip.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/19:45 amYYZ - SAN
2 stops40h 01mMultiple Airlines
lun. 12/81:33 pmSAN - YYZ
2 stops32h 05mMultiple Airlines
Deal found 11/10$344
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/156:00 amYYZ - SAN
1 stop11h 16mAmerican Airlines
vie. 12/266:15 amSAN - YYZ
1 stop12h 11mAmerican Airlines
Deal found 11/10$345
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/259:35 amYYZ - SAN
1 stop8h 19mMultiple Airlines
mar. 12/239:14 pmSAN - YYZ
2 stops19h 41mMultiple Airlines
Deal found 11/11$346
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/139:35 amYYZ - SAN
1 stop13h 32mMultiple Airlines
sáb. 1/177:03 pmSAN - YYZ
2 stops15h 37mMultiple Airlines
Deal found 11/11$347
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/159:35 amYYZ - SAN
1 stop7h 35mMultiple Airlines
mié. 12/2410:10 pmSAN - YYZ
1 stop18h 45mMultiple Airlines
Deal found 11/11$348
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/1511:45 amYYZ - SAN
2 stops12h 34mMultiple Airlines
vie. 12/197:21 pmSAN - YYZ
1 stop8h 26mMultiple Airlines
Deal found 11/11$349

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 noviembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$336
(Kiwi.com)

One-way from

$136
(Trip.com)

Popular in

November

Cheapest in

April

Average price

$460

Good round-trip deal

$427 or less

Good one-way deal

$234 or less
Provider with most accurate pricing for Toronto (YTO)-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-San Diego flights.
Search Deals
From Ontario to San Diego
Search Deals
One-way flight from Ontario to San Diego
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Ontario to San Diego.
Search Deals
Price to beat on a one-way flight from Ontario to San Diego.
Search Deals

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 2,558,603 searches. Data last updated noviembre 12, 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

mié. 12/10

6:30 am-2:16 pm

2 stops10h 46m

San Diego

lun. 1/5

10:00 pm-9:04 am

1 stop8h 04m

$377

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

jue. 12/11

6:05 am-2:16 pm

2 stops11h 11m

San Diego

mié. 12/17

10:00 pm-8:53 am

1 stop7h 53m

$378

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

jue. 12/11

6:00 am-2:12 pm

1 stop11h 12m

San Diego

mié. 12/17

11:36 am-11:32 pm

1 stop8h 56m

$379

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

mar. 1/13

12:54 pm-7:00 pm

1 stop9h 06m

San Diego

mié. 4/29

8:50 am-11:34 pm

1 stop11h 44m

$379

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

mié. 1/14

12:54 pm-7:00 pm

1 stop9h 06m

San Diego

mar. 4/28

9:40 pm-11:47 am

1 stop11h 07m

$379

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

mar. 12/9

7:10 am-1:09 pm

1 stop8h 59m

San Diego

mar. 12/16

6:15 am-5:25 pm

1 stop8h 10m

$379

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

mié. 2/4

12:50 pm-8:37 pm

1 stop10h 47m

San Diego

lun. 2/9

10:30 pm-11:45 am

1 stop10h 15m

$380

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

mié. 1/14

2:40 pm-8:53 pm

1 stop9h 13m

San Diego

sáb. 5/2

8:50 am-11:34 pm

1 stop11h 44m

$380

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

mié. 12/10

6:00 am-6:13 pm

2 stops15h 13m

San Diego

mié. 12/17

11:36 am-11:32 pm

1 stop8h 56m

$381

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

mié. 1/7

10:05 am-8:43 pm

2 stops13h 38m

San Diego

jue. 1/15

5:35 pm-9:04 am

2 stops12h 29m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

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, July is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of $96). Flying from Region of Ontario to San Diego in November is currently the most expensive (average of $259). 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 noviembre 12, 2025.

It’s typically best to fly out from Region of Ontario to San Diego in the evening. Doing so could potentially save you 32% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Region of Ontario to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Ontario to San Diego. Price data was last updated on November 10, 2024.

Travelers seeking maximum savings on their Region of Ontario to San Diego flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 noviembre 12, 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?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Ontario. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

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

    For as low as $394, Delta can have you in San Diego from Region of Ontario in 9h 36m. The distance from Region of Ontario to San Diego is about 2153 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $219. However, be on the lookout for offers from WestJet and United Airlines, as they are both options that can get you from Region of Ontario to San Diego for a low price.

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

    While some choose either Montreal Pierre Elliott Trudeau Intl - San Diego or Toronto Island - San Diego, Toronto Pearson Intl - San Diego is the most popular route from Region of Ontario to San Diego.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Region of Ontario to San Diego on time: United Airlines (80%), Air Canada (80%), Air Canada Rouge (79%).

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

    On average you can expect to pay $526 for a flight from Region of Ontario to San Diego. The cheapest flight overall is $207 while the most popular route, (Toronto Pearson Intl - San Diego) is currently priced at $250.

  • 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, July is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of $96). Flying from Region of Ontario to San Diego in November is currently the most expensive (average of $259). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
National City

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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 5 airlines flying from Ontario to San Diego

Discover the top 5 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 2,558,603 searches. Data last updated noviembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$115Average$278FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$219Average$512FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$234Average$319FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$236Average$361FlexibilityNo cancel feeOn-time69%
DeltaCheapest$264Average$342FlexibilityNo cancel feeOn-timeN/A

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