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$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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAN
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
1 adult, Economy
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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 February 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$212
(Kiwi.com)

One-way from

$136
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$286

Good round-trip deal

$230 or less

Good one-way deal

$147 or less
Provider with most accurate pricing for Toronto (YTO)-San Diego flight deals.
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Provider most trusted by Cheapflights users for Toronto (YTO)-San Diego flights.
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From Ontario to San Diego
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One-way flight from Ontario to San Diego
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Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/19. 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.
Tue 2/258:00 pmYYZ - SAN
1 stop16h 01mMultiple Airlines
Wed 2/263:00 pmSAN - YYZ
2 stops12h 17mMultiple Airlines
Deal found 2/19$212
This FlightHub deal was found by Cheapflights users on 2/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1910:20 amYYZ - SAN
Nonstop5h 45mPorter Airlines
Wed 3/262:05 pmSAN - YYZ
Nonstop4h 45mPorter Airlines
Deal found 2/20$227
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/219:30 amYYZ - SAN
Nonstop5h 23mAir Canada
Sun 5/251:58 pmSAN - YYZ
1 stop7h 00mAir Canada
Deal found 2/20$234
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/24:10 pmYTZ - SAN
2 stops18h 31mMultiple Airlines
Wed 4/96:15 amSAN - YTZ
2 stops9h 38mMultiple Airlines
Deal found 2/20$244
This Trip.com deal was found by Cheapflights users on 2/20. 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.
Mon 3/1710:20 amYYZ - SAN
Nonstop5h 45mAir Transat
Mon 3/242:05 pmSAN - YYZ
Nonstop4h 45mAir Transat
Deal found 2/20$254
This Kiwi.com deal was found by Cheapflights users on 2/20. 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.
Tue 3/256:15 amYOW - SAN
2 stops16h 02mMultiple Airlines
Tue 4/88:07 pmSAN - YOW
1 stop17h 38mMultiple Airlines
Deal found 2/20$261
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/96:00 amYOW - SAN
1 stop8h 48mAir Canada
Wed 4/1610:00 pmSAN - YOW
1 stop13h 04mAir Canada
Deal found 2/20$262
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/259:25 amYYZ - SAN
Nonstop5h 38mUnited Airlines
Tue 4/18:30 pmSAN - YYZ
1 stop7h 06mUnited Airlines
Deal found 2/20$263
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/269:15 amYUL - SAN
1 stop10h 02mAir Canada
Sat 5/311:10 amSAN - YUL
1 stop9h 16mAir Canada
Deal found 2/19$264
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 5/84:00 pmYUL - SAN
1 stop8h 44mAmerican Airlines
Tue 5/1310:39 pmSAN - YUL
1 stop10h 05mAmerican Airlines
Deal found 2/20$267
This Flightnetwork deal was found by Cheapflights users on 2/20. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/246:45 amYUL - SAN
1 stop9h 20mPorter Airlines
Mon 3/312:05 pmSAN - YUL
1 stop7h 30mPorter Airlines
Deal found 2/20$268
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/257:21 pmYYZ - SAN
1 stop7h 02mDelta
Mon 5/510:00 pmSAN - YYZ
1 stop7h 55mDelta
Deal found 2/20$269

Find flights from Ontario to San Diego within your budget

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 February 21, 2025.

Fly from

Ontario

Fly to

San Diego

Route

Depart

Return

Price

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Fri 3/28

7:25 pm-7:41 am

1 stop15h 16m

San Diego

Mon 3/31

9:19 pm-5:55 am

1 stop29h 36m

$212

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Wed 5/21

9:30 am-11:53 am

Nonstop5h 23m

San Diego

Sun 5/25

1:58 pm-11:58 pm

1 stop7h 00m

$234

TorontoSan Diego

YTZ - SAN

YTZSAN

Toronto Island

Wed 4/2

4:10 pm-7:41 am

2 stops18h 31m

San Diego

Wed 4/9

6:15 am-6:53 pm

2 stops9h 38m

$244

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Mon 3/17

10:20 am-1:05 pm

Nonstop5h 45m

San Diego

Mon 3/24

2:05 pm-9:50 pm

Nonstop4h 45m

$254

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Tue 3/25

6:15 am-7:17 pm

2 stops16h 02m

San Diego

Tue 4/8

8:07 pm-4:45 pm

1 stop17h 38m

$261

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Wed 4/9

6:00 am-11:48 am

1 stop8h 48m

San Diego

Wed 4/16

10:00 pm-2:04 pm

1 stop13h 04m

$262

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Tue 3/25

9:25 am-12:03 pm

Nonstop5h 38m

San Diego

Tue 4/1

8:30 pm-6:36 am

1 stop7h 06m

$263

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 4/26

9:15 am-4:17 pm

1 stop10h 02m

San Diego

Sat 5/3

11:10 am-11:26 pm

1 stop9h 16m

$264

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 5/8

4:00 pm-9:44 pm

1 stop8h 44m

San Diego

Tue 5/13

10:39 pm-11:44 am

1 stop10h 05m

$267

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 3/24

6:45 am-1:05 pm

1 stop9h 20m

San Diego

Mon 3/31

2:05 pm-12:35 am

1 stop7h 30m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 50 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.

Travel insights for flights from Ontario to San Diego

Get recent, data-driven insights about flights from Ontario to San Diego including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of $286). Flying from Region of Ontario to San Diego in March is currently the most expensive (average of $366). 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 February 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to San Diego as you normally would.

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 February 21, 2025.

The most flights from CAON to SAN are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated February 21, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Porter Airlines from Ontario to San Diego have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Alaska Airlines
8.0
Very good
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Delta
8.0
Very good
8,219 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Porter Airlines
7.9
Good
276 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Air Transat
7.8
Good
380 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

United Airlines
7.4
Good
8,765 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $136. However, be on the lookout for offers from Porter Airlines and Air Canada, 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: Porter Airlines (79%), Air Transat (79%), Air Canada (51%).

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

    On average you can expect to pay $225 for a flight from Region of Ontario to San Diego. The cheapest flight overall is $132 while the most popular route, (Toronto Pearson Intl - San Diego) is currently priced at $181.

  • 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, August is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of $286). Flying from Region of Ontario to San Diego in March is currently the most expensive (average of $366). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

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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 6 airlines flying from Ontario to San Diego

Discover the top 6 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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$115Average$243FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$186Average$589FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$234Average$553FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$236Average$505FlexibilityNo cancel feeOn-time69%
DeltaCheapest$264Average$540FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$294Average$492FlexibilityNo cancel feeOn-time71%
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