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$84+ Cheap flights from San Diego (SAN) to Ontario

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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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 April 15, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$182
(Kiwi.com)

One-way from

$84
(Mytrip)

Popular in

September

Cheapest in

January

Average price

$290

Good round-trip deal

$279 or less

Good one-way deal

$130 or less
Provider with most accurate pricing for San Diego-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for San Diego-Toronto (YTO) flights.
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From San Diego to Ontario
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One-way flight from San Diego to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from San Diego to Ontario.
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Price to beat on a one-way flight from San Diego to Ontario.
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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 April 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/69:08 pmSAN - YYZ
1 stop17h 12mMultiple Airlines
Tue 5/1312:00 pmYYZ - SAN
2 stops14h 56mMultiple Airlines
Deal found 4/14$182
This Trip.com deal was found by Cheapflights users on 4/15. 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.
Thu 7/3111:15 amSAN - YKF
1 stop10h 31mWestJet
Mon 8/46:00 amYKF - SAN
1 stop10h 20mWestJet
Deal found 4/15$236
This Mytrip deal was found by Cheapflights users on 4/15. 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.
Fri 5/238:48 pmSAN - YKF
2 stops24h 58mMultiple Airlines
Mon 5/266:00 amYKF - SAN
3 stops28h 13mMultiple Airlines
Deal found 4/15$245
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Wed 4/232:05 pmSAN - YYZ
Nonstop4h 45mPorter Airlines
Wed 4/3010:20 amYYZ - SAN
Nonstop5h 45mPorter Airlines
Deal found 4/13$246
This Mytrip deal was found by Cheapflights users on 4/15. 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 5/76:15 amSAN - YHM
2 stops15h 26mMultiple Airlines
Wed 5/146:00 amYHM - SAN
1 stop10h 20mMultiple Airlines
Deal found 4/15$247
This Trip.com deal was found by Cheapflights users on 4/15. 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.
Thu 7/3111:15 amSAN - YHM
1 stop10h 26mWestJet
Mon 8/46:00 amYHM - SAN
1 stop10h 20mWestJet
Deal found 4/15$255
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Mon 5/121:55 pmSAN - YUL
1 stop7h 42mMultiple Airlines
Wed 5/147:00 amYUL - SAN
1 stop9h 20mMultiple Airlines
Deal found 4/15$257
This Mytrip deal was found by Cheapflights users on 4/13. 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.
Thu 5/2912:40 pmSAN - YYZ
1 stop9h 29mAir Canada
Thu 6/59:30 amYYZ - SAN
Nonstop5h 23mAir Canada
Deal found 4/13$261
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Sun 6/152:05 pmSAN - YYZ
2 stops12h 46mWestJet
Mon 6/236:30 amYYZ - SAN
1 stop9h 50mWestJet
Deal found 4/15$272
This Trip.com deal was found by Cheapflights users on 4/14. 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.
Fri 5/91:55 pmSAN - YUL
1 stop7h 42mPorter Airlines
Sun 5/186:45 amYUL - SAN
1 stop9h 10mPorter Airlines
Deal found 4/14$272
This Trip.com deal was found by Cheapflights users on 4/14. 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.
Thu 5/2912:51 pmSAN - YOW
2 stops14h 54mMultiple Airlines
Thu 6/56:00 amYOW - SAN
1 stop10h 20mMultiple Airlines
Deal found 4/14$272
This Air Canada deal was found by Cheapflights users on 4/15. 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.
Tue 9/168:10 amSAN - YTZ
1 stop10h 39mAir Canada
Tue 9/2312:25 pmYTZ - SAN
1 stop10h 10mAir Canada
Deal found 4/15$279

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 2,558,603 searches. Data last updated April 15, 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

Tue 5/6

9:08 pm-5:20 pm

1 stop17h 12m

Toronto Pearson Intl

Tue 5/13

12:00 pm-11:56 pm

2 stops14h 56m

$182

San DiegoToronto

SAN - YKF

SANYKF

San Diego

Thu 7/31

11:15 am-12:46 am

1 stop10h 31m

Toronto Region of Waterloo Intl

Mon 8/4

6:00 am-1:20 pm

1 stop10h 20m

$236

San DiegoToronto

SAN - YKF

SANYKF

San Diego

Fri 5/23

8:48 pm-12:46 am

2 stops24h 58m

Toronto Region of Waterloo Intl

Mon 5/26

6:00 am-7:13 am

3 stops28h 13m

$245

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Fri 4/25

2:05 pm-9:50 pm

Nonstop4h 45m

Toronto Pearson Intl

Wed 4/30

10:20 am-1:05 pm

Nonstop5h 45m

$246

San DiegoHamilton

SAN - YHM

SANYHM

San Diego

Wed 5/7

6:15 am-12:41 am

2 stops15h 26m

Hamilton

Wed 5/14

6:00 am-1:20 pm

1 stop10h 20m

$247

San DiegoHamilton

SAN - YHM

SANYHM

San Diego

Thu 7/31

11:15 am-12:41 am

1 stop10h 26m

Hamilton

Mon 8/4

6:00 am-1:20 pm

1 stop10h 20m

$255

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Mon 5/12

1:55 pm-12:37 am

1 stop7h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 5/14

7:00 am-1:20 pm

1 stop9h 20m

$257

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Thu 5/29

12:40 pm-1:09 am

1 stop9h 29m

Toronto Pearson Intl

Thu 6/5

9:30 am-11:53 am

Nonstop5h 23m

$261

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Fri 5/9

1:55 pm-12:37 am

1 stop7h 42m

Montreal Pierre Elliott Trudeau Intl

Sun 5/18

6:45 am-12:55 pm

1 stop9h 10m

$272

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Sun 6/15

2:05 pm-5:51 am

2 stops12h 46m

Toronto Pearson Intl

Mon 6/23

6:30 am-1:20 pm

1 stop9h 50m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 48 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 $243). Flying from San Diego to Region of Ontario in July is currently the most expensive (average of $359). 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 April 15, 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.

Weekly flight availability from San Diego to Region of Ontario

Explore weekly flight availability from San Diego to Ontario. 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 April 15, 2025.

The most flights from SAN to CAON 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 Ontario by month

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

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 April 15, 2025.
Read through reviews of airlines operating flights from San Diego to Ontario, such as Alaska Airlines, Porter Airlines and Delta. 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
9,871 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Porter Airlines
8.0
Very good
281 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,918 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Air Transat
7.8
Good
385 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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?

    If you book a flight to Ontario from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego.

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

    One-way options have recently been found by users for as low as $115 on WestJet. Other airlines that offer cheap prices include Porter Airlines from $116 and Air Canada from $123 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?

    No one likes to see their flight delayed. When booking a flight from San Diego to Region of Ontario consider choosing Porter Airlines (63%), Air Transat (63%) or Air Canada (44%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $237 for a flight from San Diego to Region of Ontario. The cheapest flight overall is $106 while the most popular route, (San Diego - Toronto Pearson Intl) is currently priced at $237.

  • 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 $243). Flying from San Diego to Region of Ontario in July is currently the most expensive (average of $359). 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.

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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 6 airlines flying from San Diego to Ontario

Discover the top 6 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 2,558,603 searches. Data last updated April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$130Average$313FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$153Average$501FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$215Average$562FlexibilityNo cancel feeOn-time69%
Air TransatCheapest$264Average$308FlexibilityNo cancel feeOn-time50%
DeltaCheapest$317Average$374FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$317Average$506FlexibilityNo cancel feeOn-time71%

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