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Cheap flights from Ontario to San Diego from C$ 188

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 30/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAN
4 May — 11 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 29 April 2025.

Round-trip from

C$ 338

One-way from

C$ 188

Popular in

August

Cheapest in

February

Average price

C$ 394

Good round-trip deal

C$ 371 or less

Good one-way deal

C$ 241 or less
27/5-3/6
  • 27/5-3/6
  • 3 total stops
  • 40h 24m total
  • Ontario to San Diego
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30/5
  • 30/5
  • 2 total stops
  • 14h 26m 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
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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 29 April 2025.

Tue 27/52:00 p.m.YYZ - SAN
2 stops20h 13mMultiple Airlines
Tue 3/68:48 p.m.SAN - YYZ
1 stop20h 11mMultiple Airlines
Deal found 27/4C$ 338
Thu 17/76:00 a.m.YKF - SAN
1 stop10h 20mWestJet
Sun 17/811:15 a.m.SAN - YKF
1 stop10h 31mWestJet
Deal found 28/4C$ 353
Wed 14/512:25 p.m.YTZ - SAN
1 stop10h 20mAir Canada
Sun 18/58:00 a.m.SAN - YTZ
1 stop8h 50mAir Canada
Deal found 28/4C$ 353
Wed 28/510:45 a.m.YYZ - SAN
Nonstop5h 10mPorter Airlines
Wed 4/61:55 p.m.SAN - YYZ
Nonstop4h 50mPorter Airlines
Deal found 28/4C$ 360
Sat 31/59:30 a.m.YYZ - SAN
Nonstop5h 23mUnited Airlines
Sun 1/610:10 p.m.SAN - YYZ
1 stop8h 09mUnited Airlines
Deal found 27/4C$ 362
Thu 17/76:00 a.m.YHM - SAN
1 stop10h 20mWestJet
Sun 17/811:15 a.m.SAN - YHM
1 stop10h 26mWestJet
Deal found 28/4C$ 366
Mon 9/67:00 a.m.YUL - SAN
1 stop9h 20mMultiple Airlines
Wed 18/61:55 p.m.SAN - YUL
1 stop7h 42mMultiple Airlines
Deal found 28/4C$ 371
Thu 17/76:30 a.m.YYZ - SAN
1 stop9h 50mWestJet
Sun 17/811:15 a.m.SAN - YYZ
1 stop8h 39mWestJet
Deal found 28/4C$ 373
Fri 22/86:00 a.m.YOW - SAN
1 stop10h 20mWestJet
Mon 25/81:00 p.m.SAN - YOW
2 stops13h 25mWestJet
Deal found 27/4C$ 374
Wed 11/64:45 p.m.YUL - SAN
Nonstop6h 00mUnited Airlines
Mon 16/69:10 p.m.SAN - YUL
1 stop9h 13mUnited Airlines
Deal found 28/4C$ 376
Mon 9/67:00 a.m.YUL - SAN
1 stop9h 20mWestJet
Mon 16/62:05 p.m.SAN - YUL
2 stops31h 32mWestJet
Deal found 28/4C$ 378
Wed 11/64:45 p.m.YUL - SAN
Nonstop6h 00mAir Canada
Fri 13/610:30 p.m.SAN - YUL
2 stops15h 51mAir Canada
Deal found 28/4C$ 385

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 29 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

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Tue 27/5

2:00 p.m.-7:13 a.m.

2 stops20h 13m

San Diego

Tue 3/6

8:48 p.m.-7:59 p.m.

1 stop20h 11m

C$ 338

TorontoSan Diego

YKF - SAN

YKFSAN

Toronto Region of Waterloo Intl

Thu 17/7

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

1 stop10h 20m

San Diego

Sun 17/8

11:15 a.m.-12:46 a.m.

1 stop10h 31m

C$ 353

TorontoSan Diego

YTZ - SAN

YTZSAN

Toronto Island

Wed 14/5

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

1 stop10h 20m

San Diego

Sun 18/5

8:00 a.m.-7:50 p.m.

1 stop8h 50m

C$ 353

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Wed 28/5

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

Nonstop5h 10m

San Diego

Wed 4/6

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

Nonstop4h 50m

C$ 360

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sat 31/5

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

Nonstop5h 23m

San Diego

Sun 1/6

10:10 p.m.-9:19 a.m.

1 stop8h 09m

C$ 362

HamiltonSan Diego

YHM - SAN

YHMSAN

Hamilton

Thu 17/7

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

1 stop10h 20m

San Diego

Sun 17/8

11:15 a.m.-12:41 a.m.

1 stop10h 26m

C$ 366

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 9/6

7:00 a.m.-1:20 p.m.

1 stop9h 20m

San Diego

Wed 18/6

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

1 stop7h 42m

C$ 371

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Thu 17/7

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

1 stop9h 50m

San Diego

Sun 17/8

11:15 a.m.-10:54 p.m.

1 stop8h 39m

C$ 373

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Fri 22/8

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

1 stop10h 20m

San Diego

Mon 25/8

1:00 p.m.-5:25 a.m.

2 stops13h 25m

C$ 374

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 11/6

4:45 p.m.-7:45 p.m.

Nonstop6h 00m

San Diego

Mon 16/6

9:10 p.m.-9:23 a.m.

1 stop9h 13m

C$ 376

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/4

Showing 1-10 of 53 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 29 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 29 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 29 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
9,949 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Porter Airlines
8.0
Very good
285 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Air Transat
7.8
Good
385 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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$ 208. Porter Airlines flights start at C$ 211 while deals on Air Canada start at C$ 224 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$ 352, our data shows the cheapest flight currently is C$ 204. When looking at the most popular route, (Toronto Pearson Intl - San Diego), you can expect to pay C$ 349 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 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 239AverageC$ 413FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Porter AirlinesCheapestC$ 247AverageC$ 482FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 294AverageC$ 534FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 309AverageC$ 534FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 330AverageC$ 666FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 333AverageC$ 469FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 361AverageC$ 482FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 406AverageC$ 895FlexibilityNo 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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