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Cheap flights from Ontario to San Diego from C$ 207

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAN
4 Aug — 11 Aug1
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 30 July 2025.

Round-trip from

C$ 371

One-way from

C$ 207

Popular in

September

Cheapest in

April

Average price

C$ 590

Good round-trip deal

C$ 572 or less

Good one-way deal

C$ 443 or less
Air Canada
  • Air Canada
  • 11/9-16/9
  • 2 total stops
  • 18h 46m total
  • Ontario to San Diego
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Air Canada
  • Air Canada
  • 4/9
  • Nonstop
  • 5h 50m total
  • Ontario to San Diego
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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.
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 30 July 2025.

Thu 11/95:00 a.m.YUL - SAN
1 stop9h 31mAir Canada
Tue 16/912:25 p.m.SAN - YUL
1 stop9h 15mAir Canada
Deal found 29/7C$ 371
Mon 25/86:00 a.m.YKF - SAN
1 stop10h 20mWestJet
Thu 28/811:15 a.m.SAN - YKF
1 stop10h 31mWestJet
Deal found 28/7C$ 392
Wed 10/97:45 p.m.YYZ - SAN
2 stops25h 57mMultiple Airlines
Wed 17/96:15 a.m.SAN - YYZ
1 stop10h 30mMultiple Airlines
Deal found 29/7C$ 392
Fri 22/86:30 a.m.YYZ - SAN
1 stop9h 50mWestJet
Sun 24/811:15 a.m.SAN - YYZ
1 stop10h 09mWestJet
Deal found 28/7C$ 396
Thu 18/99:20 a.m.YYZ - SAN
Nonstop5h 11mAir Canada
Mon 22/912:25 p.m.SAN - YYZ
Nonstop4h 55mAir Canada
Deal found 29/7C$ 399
Sat 23/86:00 a.m.YHM - SAN
1 stop10h 20mWestJet
Thu 28/811:15 a.m.SAN - YHM
1 stop10h 26mWestJet
Deal found 29/7C$ 408
Thu 21/87:00 a.m.YUL - SAN
1 stop9h 20mWestJet
Thu 28/811:15 a.m.SAN - YUL
1 stop10h 28mWestJet
Deal found 28/7C$ 417
Tue 14/106:30 p.m.YUL - SAN
1 stop8h 45mUnited Airlines
Tue 28/106:45 a.m.SAN - YUL
2 stops11h 57mUnited Airlines
Deal found 27/7C$ 421
Fri 29/87:00 a.m.YYZ - SAN
1 stop7h 40mUnited Airlines
Fri 5/99:45 p.m.SAN - YYZ
1 stop9h 19mUnited Airlines
Deal found 27/7C$ 435
Sat 18/102:40 p.m.YOW - SAN
1 stop7h 55mAir Canada
Mon 20/108:10 a.m.SAN - YOW
1 stop9h 04mAir Canada
Deal found 29/7C$ 444
Mon 18/83:44 p.m.YUL - SAN
1 stop19h 36mAmerican Airlines
Sun 24/86:47 p.m.SAN - YUL
1 stop17h 07mAmerican Airlines
Deal found 28/7C$ 459
Thu 21/85:43 p.m.YYZ - SAN
1 stop8h 59mDelta
Mon 25/810:30 p.m.SAN - YYZ
1 stop8h 53mDelta
Deal found 30/7C$ 463

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 30 July 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

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 11/9

5:00 a.m.-11:31 a.m.

1 stop9h 31m

San Diego

Tue 16/9

12:25 p.m.-12:40 a.m.

1 stop9h 15m

C$ 371

TorontoSan Diego

YKF - SAN

YKFSAN

Toronto Region of Waterloo Intl

Mon 25/8

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

1 stop10h 20m

San Diego

Thu 28/8

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

1 stop10h 31m

C$ 392

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Wed 10/9

7:45 p.m.-6:42 p.m.

2 stops25h 57m

San Diego

Wed 17/9

6:15 a.m.-7:45 p.m.

1 stop10h 30m

C$ 392

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Fri 22/8

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

1 stop9h 50m

San Diego

Sun 24/8

11:15 a.m.-12:24 a.m.

1 stop10h 09m

C$ 396

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Thu 18/9

9:20 a.m.-11:31 a.m.

Nonstop5h 11m

San Diego

Mon 22/9

12:25 p.m.-8:20 p.m.

Nonstop4h 55m

C$ 399

HamiltonSan Diego

YHM - SAN

YHMSAN

Hamilton

Sat 23/8

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

1 stop10h 20m

San Diego

Thu 28/8

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

1 stop10h 26m

C$ 408

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 21/8

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

1 stop9h 20m

San Diego

Thu 28/8

11:15 a.m.-12:43 a.m.

1 stop10h 28m

C$ 417

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 14/10

6:30 p.m.-12:15 a.m.

1 stop8h 45m

San Diego

Tue 28/10

6:45 a.m.-9:42 p.m.

2 stops11h 57m

C$ 421

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Fri 29/8

7:00 a.m.-11:40 a.m.

1 stop7h 40m

San Diego

Fri 5/9

9:45 p.m.-10:04 a.m.

1 stop9h 19m

C$ 435

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Sat 18/10

2:40 p.m.-7:35 p.m.

1 stop7h 55m

San Diego

Mon 20/10

8:10 a.m.-8:14 p.m.

1 stop9h 04m

C$ 444

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 47 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 September is currently the most expensive (average of C$ 392). 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 30 July 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.

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 30 July 2025.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Ontario to San Diego by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
WestJet
7.2
Good
2,975 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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 Air Canada, which is currently one of the cheapest options available, starting at C$ 207. WestJet flights start at C$ 228 while deals on American Airlines start at C$ 251 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 (92%), Air Transat (92%) and Air Canada (80%).

  • 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$ 616, our data shows the cheapest flight currently is C$ 322. When looking at the most popular route, (Toronto Pearson Intl - San Diego), you can expect to pay C$ 337 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 September is currently the most expensive (average of C$ 392). 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 9 airlines flying from Ontario to San Diego

Discover the top 9 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 30 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 248AverageC$ 468FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 249AverageC$ 421FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
American AirlinesCheapestC$ 293AverageC$ 540FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 307AverageC$ 497FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 319AverageC$ 615FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 323AverageC$ 460FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 332AverageC$ 438FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 404AverageC$ 887FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
WestJet EncoreCheapestC$ 701AverageC$ 778FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore flights

Fly with Cheapflights

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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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