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Cheap flights from San Diego to Ontario from C$ 182

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
3 Aug — 10 Aug1
1 adult

Cheap flight deals from San Diego to Ontario

Keep the following information in mind while searching for San Diego to Ontario flight deals. Data was last updated 29 July 2025.

Round-trip from

C$ 377

One-way from

C$ 182

Popular in

October

Cheapest in

January

Average price

C$ 573

Good round-trip deal

C$ 467 or less

Good one-way deal

C$ 284 or less
10/10-13/10
  • 10/10-13/10
  • 2 total stops
  • 26h 52m total
  • San Diego to Ontario
Search Deals
8/8
  • 8/8
  • 2 total stops
  • 24h 41m total
  • San Diego to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 19 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 San Diego to Ontario.
Search Deals
Price to beat on a one-way flight from San Diego to Ontario.
Search Deals

Find flight deals from San Diego to Ontario

Cheapest flights from San Diego to Ontario
Explore the most affordable flight options available from San Diego to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Fri 10/106:25 a.m.SAN - YYZ
1 stop10h 33mMultiple Airlines
Mon 13/109:45 a.m.YYZ - SAN
1 stop16h 19mMultiple Airlines
Deal found 26/7C$ 377
Thu 28/811:15 a.m.SAN - YYZ
1 stop8h 39mWestJet
Fri 12/96:30 a.m.YYZ - SAN
1 stop9h 50mWestJet
Deal found 27/7C$ 412
Thu 21/811:15 a.m.SAN - YKF
1 stop10h 31mWestJet
Sun 24/86:00 a.m.YKF - SAN
1 stop10h 20mWestJet
Deal found 28/7C$ 425
Thu 28/811:15 a.m.SAN - YUL
1 stop10h 28mWestJet
Sat 13/95:30 p.m.YUL - SAN
1 stop22h 50mWestJet
Deal found 27/7C$ 434
Thu 28/811:15 a.m.SAN - YUL
1 stop10h 28mMultiple Airlines
Fri 12/98:10 a.m.YUL - SAN
2 stops28h 16mMultiple Airlines
Deal found 27/7C$ 450
Fri 24/105:19 p.m.SAN - YTZ
1 stop15h 58mMultiple Airlines
Tue 28/102:30 p.m.YTZ - SAN
1 stop10h 49mMultiple Airlines
Deal found 26/7C$ 464
Wed 10/912:25 p.m.SAN - YUL
1 stop9h 15mAir Canada
Wed 17/95:00 a.m.YUL - SAN
1 stop9h 31mAir Canada
Deal found 27/7C$ 475
Thu 28/811:15 a.m.SAN - YHM
1 stop10h 26mWestJet
Fri 5/96:00 a.m.YHM - SAN
1 stop10h 20mWestJet
Deal found 29/7C$ 482
Tue 19/810:54 p.m.SAN - YUL
1 stop10h 22mAmerican Airlines
Wed 20/83:44 p.m.YUL - SAN
1 stop19h 38mAmerican Airlines
Deal found 29/7C$ 488
Mon 25/88:11 p.m.SAN - YUL
1 stop9h 05mUnited Airlines
Wed 10/99:45 a.m.YUL - SAN
1 stop9h 05mUnited Airlines
Deal found 27/7C$ 490
Sat 27/91:25 p.m.SAN - YUL
1 stop6h 53mDelta
Tue 14/1012:36 p.m.YUL - SAN
1 stop11h 44mDelta
Deal found 27/7C$ 491
Wed 20/86:15 a.m.SAN - YKF
2 stops15h 31mMultiple Airlines
Tue 26/86:00 a.m.YKF - SAN
1 stop10h 20mMultiple Airlines
Deal found 29/7C$ 495

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Ontario 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 July 2025.
Use the filters below to find and compare flights from San Diego to Ontario that are best for you.

Fly from

San Diego

Fly to

Ontario

Route

Depart

Return

Price

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Fri 10/10

6:25 a.m.-7:58 p.m.

1 stop10h 33m

Toronto Pearson Intl

Mon 13/10

9:45 a.m.-11:04 p.m.

1 stop16h 19m

C$ 377

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Thu 28/8

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

1 stop8h 39m

Toronto Pearson Intl

Fri 12/9

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

1 stop9h 50m

C$ 412

San DiegoToronto

SAN - YKF

SANYKF

San Diego

Thu 21/8

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

1 stop10h 31m

Toronto Region of Waterloo Intl

Sun 24/8

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

1 stop10h 20m

C$ 425

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Thu 28/8

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

1 stop10h 28m

Montreal Pierre Elliott Trudeau Intl

Sat 13/9

5:30 p.m.-1:20 p.m.

1 stop22h 50m

C$ 434

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Thu 28/8

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

1 stop10h 28m

Montreal Pierre Elliott Trudeau Intl

Fri 12/9

8:10 a.m.-9:26 a.m.

2 stops28h 16m

C$ 450

San DiegoToronto

SAN - YTZ

SANYTZ

San Diego

Fri 24/10

5:19 p.m.-12:17 p.m.

1 stop15h 58m

Toronto Island

Tue 28/10

2:30 p.m.-10:19 p.m.

1 stop10h 49m

C$ 464

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Wed 10/9

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

1 stop9h 15m

Montreal Pierre Elliott Trudeau Intl

Wed 17/9

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

1 stop9h 31m

C$ 475

San DiegoHamilton

SAN - YHM

SANYHM

San Diego

Thu 28/8

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

1 stop10h 26m

Hamilton

Fri 5/9

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

1 stop10h 20m

C$ 482

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Tue 19/8

10:54 p.m.-12:16 p.m.

1 stop10h 22m

Montreal Pierre Elliott Trudeau Intl

Wed 20/8

3:44 p.m.-8:22 a.m.

1 stop19h 38m

C$ 488

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Mon 25/8

8:11 p.m.-8:16 a.m.

1 stop9h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 10/9

9:45 a.m.-3:50 p.m.

1 stop9h 05m

C$ 490

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/7

Showing 1-10 of 40 results
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Best time to book a flight from San Diego to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Diego 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 San Diego to Ontario

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

Currently, January is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of C$ 167). Flying from San Diego to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 SAN to ON?

Find hourly flight availability from San Diego to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 July 2025.

When flying from San Diego to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from San Diego to Region of Ontario?

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 29 July 2025.
Read reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines from San Diego to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,972 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Ontario. 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 from for flights from San Diego to Ontario?

    Most people fly from San Diego (SAN) if they book a flight from San Diego to Ontario. San Diego is conveniently located just 4.2 km from San Diego’s city centre.

  • What are the cheapest airlines to fly from San Diego to Region of Ontario 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$ 182. WestJet flights start at C$ 187 while deals on Delta start at C$ 207 one-way.

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

    The most popular route from San Diego to Region of Ontario is San Diego - Toronto Pearson Intl. You may also consider San Diego - Montreal Pierre Elliott Trudeau Intl or San Diego - Toronto Island.

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

    Consider Porter Airlines (71%), Air Transat (71%) or Air Canada (68%) when booking your flight. These represent the most reliable airlines when flying from San Diego to Region of Ontario.

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

    While on average a flight from San Diego to Region of Ontario is generally C$ 439, our data shows the cheapest flight currently is C$ 163. When looking at the most popular route, (San Diego - Toronto Pearson Intl), you can expect to pay C$ 354 for that flight.

  • Can I find deals for flights from San Diego to Ontario that include hotel bookings?

    Yes. In addition to deals on San Diego to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Ontario.

  • Can I find deals for business class flights from San Diego to Ontario?

    Yes. Cheapflights offers flight deals from San Diego to Ontario 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 San Diego to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of C$ 167). Flying from San Diego to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

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Alternative routes for San Diego to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from San Diego to Ontario

Discover the top 3 airlines that operate flights from San Diego to Ontario. 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 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 253AverageC$ 480FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 287AverageC$ 405FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 418AverageC$ 630FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 San Diego to Ontario?

Cheapflights makes it easy to find San Diego to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Diego to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from San Diego.

Can Cheapflights find flights from San Diego to Ontario with no change fees?

Yes, we can. To see specific flights from San Diego to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from San Diego to Ontario become cheaper?

Not ready to book yet? You can track prices for flights from San Diego to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

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