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Cheap flights from Ontario to San Diego from C$ 185

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAN
27 Apr — 4 May1
1 adult

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 22 April 2025.

Round-trip from

C$ 318

One-way from

C$ 185

Popular in

August

Cheapest in

February

Average price

C$ 401

Good round-trip deal

C$ 349 or less

Good one-way deal

C$ 240 or less
Air Canada
  • Air Canada
  • 5/5-12/5
  • 2 total stops
  • 20h 55m total
  • Ontario to San Diego
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WestJet
  • WestJet
  • 11/7
  • 1 total stop
  • 10h 20m total
  • Ontario to San Diego
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
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.
Search Deals

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 22 April 2025.

Mon 5/512:25 p.m.YTZ - SAN
1 stop10h 20mAir Canada
Mon 12/58:00 a.m.SAN - YTZ
1 stop10h 35mAir Canada
Deal found 21/4C$ 318
Fri 2/56:55 a.m.YYZ - SAN
2 stops20h 03mMultiple Airlines
Mon 5/59:08 p.m.SAN - YYZ
1 stop17h 12mMultiple Airlines
Deal found 20/4C$ 318
Mon 5/59:30 a.m.YYZ - SAN
Nonstop5h 23mAir Canada
Mon 12/58:00 a.m.SAN - YYZ
1 stop10h 39mAir Canada
Deal found 21/4C$ 326
Mon 5/56:45 a.m.YUL - SAN
1 stop9h 10mPorter Airlines
Wed 14/51:55 p.m.SAN - YUL
1 stop7h 42mPorter Airlines
Deal found 21/4C$ 327
Sat 31/56:30 a.m.YYZ - SAN
1 stop9h 50mWestJet
Sun 1/62:05 p.m.SAN - YYZ
2 stops12h 46mWestJet
Deal found 20/4C$ 332
Sat 31/56:00 a.m.YKF - SAN
1 stop10h 20mWestJet
Sun 1/61:00 p.m.SAN - YKF
2 stops32h 46mWestJet
Deal found 20/4C$ 336
Mon 5/510:45 a.m.YYZ - SAN
Nonstop5h 10mPorter Airlines
Sun 11/51:55 p.m.SAN - YYZ
Nonstop4h 50mPorter Airlines
Deal found 21/4C$ 340
Thu 8/59:30 a.m.YYZ - SAN
Nonstop5h 23mUnited Airlines
Sun 11/57:10 a.m.SAN - YYZ
1 stop6h 25mUnited Airlines
Deal found 20/4C$ 349
Wed 14/56:00 a.m.YUL - SAN
1 stop8h 53mAir Canada
Wed 28/511:22 a.m.SAN - YUL
1 stop9h 04mAir Canada
Deal found 21/4C$ 358
Sat 31/56:00 a.m.YHM - SAN
1 stop10h 20mWestJet
Sun 1/61:00 p.m.SAN - YHM
2 stops32h 41mWestJet
Deal found 20/4C$ 361
Sat 24/57:47 a.m.YUL - SAN
1 stop13h 42mAmerican Airlines
Sat 31/56:28 a.m.SAN - YUL
1 stop13h 17mAmerican Airlines
Deal found 20/4C$ 363
Tue 10/67:00 a.m.YUL - SAN
1 stop9h 20mWestJet
Tue 17/62:05 p.m.SAN - YUL
1 stop23h 22mWestJet
Deal found 22/4C$ 367

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 22 April 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

YTZ - SAN

YTZSAN

Toronto Island

Mon 5/5

12:25 p.m.-7:45 p.m.

1 stop10h 20m

San Diego

Mon 12/5

8:00 a.m.-9:35 p.m.

1 stop10h 35m

C$ 318

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Fri 2/5

6:55 a.m.-11:58 p.m.

2 stops20h 03m

San Diego

Mon 5/5

9:08 p.m.-5:20 p.m.

1 stop17h 12m

C$ 318

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Mon 5/5

9:30 a.m.-11:53 a.m.

Nonstop5h 23m

San Diego

Mon 12/5

8:00 a.m.-9:39 p.m.

1 stop10h 39m

C$ 326

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 5/5

6:45 a.m.-12:55 p.m.

1 stop9h 10m

San Diego

Wed 14/5

1:55 p.m.-12:37 a.m.

1 stop7h 42m

C$ 327

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sat 31/5

6:30 a.m.-1:20 p.m.

1 stop9h 50m

San Diego

Sun 1/6

2:05 p.m.-5:51 a.m.

2 stops12h 46m

C$ 332

TorontoSan Diego

YKF - SAN

YKFSAN

Toronto Region of Waterloo Intl

Sat 31/5

6:00 a.m.-1:20 p.m.

1 stop10h 20m

San Diego

Sun 1/6

1:00 p.m.-12:46 a.m.

2 stops32h 46m

C$ 336

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Mon 5/5

10:45 a.m.-12:55 p.m.

Nonstop5h 10m

San Diego

Sun 11/5

1:55 p.m.-9:45 p.m.

Nonstop4h 50m

C$ 340

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Thu 8/5

9:30 a.m.-11:53 a.m.

Nonstop5h 23m

San Diego

Sun 11/5

7:10 a.m.-4:35 p.m.

1 stop6h 25m

C$ 349

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 14/5

6:00 a.m.-11:53 a.m.

1 stop8h 53m

San Diego

Wed 28/5

11:22 a.m.-11:26 p.m.

1 stop9h 04m

C$ 358

HamiltonSan Diego

YHM - SAN

YHMSAN

Hamilton

Sat 31/5

6:00 a.m.-1:20 p.m.

1 stop10h 20m

San Diego

Sun 1/6

1:00 p.m.-12:41 a.m.

2 stops32h 41m

C$ 361

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Showing 1-10 of 55 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, January is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of C$ 300). Flying from Region of Ontario to San Diego in July is currently the most expensive (average of C$ 409). 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 22 April 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 22 April 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 - 58.0 mm per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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 22 April 2025.
See what other customers who have flown with Alaska Airlines, Porter Airlines and Delta from Ontario to San Diego have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Entertainment

7.1

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,906 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Entertainment

7.1

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Porter Airlines
8.0
Very good
284 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Entertainment

7.1

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Entertainment

7.1

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Air Transat
7.8
Good
385 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Entertainment

7.1

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,684 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Entertainment

7.1

Food

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • 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$ 185. Air Canada flights start at C$ 199 while deals on United Airlines start at C$ 227 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 Porter Airlines (83%), Air Transat (83%) and Air Canada (65%).

  • 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$ 340, our data shows the cheapest flight currently is C$ 203. When looking at the most popular route, (Toronto Pearson Intl - San Diego), you can expect to pay C$ 257 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, January is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of C$ 300). Flying from Region of Ontario to San Diego in July is currently the most expensive (average of C$ 409). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
El Cajon
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 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 22 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 238AverageC$ 412FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Porter AirlinesCheapestC$ 244AverageC$ 489FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 293AverageC$ 532FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 308AverageC$ 535FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 331AverageC$ 678FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 343AverageC$ 468FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 360AverageC$ 487FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 405AverageC$ 892FlexibilityNo 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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