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Ontario

$97+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
1 adult, Economy
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Cheap 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 enero 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
lun. 2/232:05 pm
SAN
-
YYZ
1 stop13h 38m
Multiple Airlines
vie. 3/68:00 pm
YYZ
-
SAN
1 stop20h 13m
Multiple Airlines
Deal found 1/26$245
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
lun. 2/232:05 pm
SAN
-
YYZ
1 stop13h 38m
Multiple Airlines
jue. 3/58:35 pm
YYZ
-
SAN
1 stop22h 38m
Multiple Airlines
Deal found 1/26$249
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
jue. 2/262:38 pm
SAN
-
YYZ
2 stops12h 35m
Multiple Airlines
vie. 3/68:00 pm
YYZ
-
SAN
1 stop20h 13m
Multiple Airlines
Deal found 1/26$255
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
jue. 2/262:38 pm
SAN
-
YYZ
2 stops12h 35m
Multiple Airlines
jue. 3/58:35 pm
YYZ
-
SAN
1 stop22h 38m
Multiple Airlines
Deal found 1/26$259
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
lun. 2/232:05 pm
SAN
-
YYZ
1 stop13h 38m
Multiple Airlines
vie. 2/278:00 pm
YYZ
-
SAN
2 stops26h 53m
Multiple Airlines
Deal found 1/26$271
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
lun. 2/232:05 pm
SAN
-
YYZ
1 stop13h 38m
Multiple Airlines
mar. 3/37:15 am
YYZ
-
SAN
2 stops17h 26m
Multiple Airlines
Deal found 1/26$284
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
mar. 4/287:55 am
SAN
-
YYZ
1 stop9h 05m
Multiple Airlines
lun. 5/49:45 am
YYZ
-
SAN
1 stop10h 55m
Multiple Airlines
Deal found 1/28$294
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
vie. 2/278:18 pm
SAN
-
YYZ
1 stop7h 25m
Multiple Airlines
mié. 3/1810:50 pm
YYZ
-
SAN
2 stops21h 48m
Multiple Airlines
Deal found 1/28$295
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
lun. 4/279:07 pm
SAN
-
YYZ
1 stop19h 53m
Multiple Airlines
sáb. 5/29:30 am
YYZ
-
SAN
1 stop7h 55m
Multiple Airlines
Deal found 1/28$296
This Kiwi.com deal was found by Cheapflights users on 1/29. 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.
jue. 2/262:38 pm
SAN
-
YYZ
1 stop13h 05m
Multiple Airlines
dom. 3/810:05 am
YYZ
-
SAN
2 stops17h 11m
Multiple Airlines
Deal found 1/29$300
This American Airlines deal was found by Cheapflights users on 1/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/73:07 pm
SAN
-
YUL
1 stop17h 37m
American Airlines
sáb. 4/1812:30 pm
YUL
-
SAN
1 stop13h 46m
American Airlines
Deal found 1/28$355
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
jue. 4/239:19 am
SAN
-
YUL
2 stops12h 16m
Multiple Airlines
lun. 4/277:15 am
YUL
-
SAN
1 stop9h 55m
Multiple Airlines
Deal found 1/28$378

Find 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 enero 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$245
(Kiwi.com)

One-way from

$97
(Trip.com)

Popular in

October

Cheapest in

March

Average price

$399

Good round-trip deal

$295 or less

Good one-way deal

$191 or less
Provider with most accurate pricing for San Diego-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Toronto (YTO) flights.
Search Deals
From San Diego to Ontario
Search Deals
One-way flight from San Diego to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
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

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 enero 29, 2026.
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

mar. 2/24

3:07 pm-6:13 am

2 stops12h 06m

Toronto Pearson Intl

dom. 3/1

8:00 pm-1:05 pm

1 stop20h 05m

$346

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

mar. 4/7

3:07 pm-11:44 am

1 stop17h 37m

Montreal Pierre Elliott Trudeau Intl

sáb. 4/18

12:30 pm-11:16 pm

1 stop13h 46m

$355

San DiegoToronto

SAN - YTZ

SANYTZ

San Diego

mié. 2/25

5:42 pm-1:47 pm

1 stop17h 05m

Toronto Island

mié. 3/4

9:15 am-5:52 pm

1 stop11h 37m

$383

San DiegoOttawa

SAN - YOW

SANYOW

San Diego

jue. 5/7

3:30 pm-5:40 am

1 stop11h 10m

Ottawa

sáb. 5/16

6:15 pm-2:10 pm

2 stops22h 55m

$387

San DiegoToronto

SAN - YKF

SANYKF

San Diego

jue. 4/30

3:30 pm-7:50 pm

1 stop25h 20m

Toronto Region of Waterloo Intl

lun. 5/4

8:40 pm-2:10 pm

1 stop20h 30m

$424

San DiegoToronto

SAN - YKF

SANYKF

San Diego

jue. 5/28

3:30 pm-7:50 pm

1 stop25h 20m

Toronto Region of Waterloo Intl

jue. 6/4

8:40 pm-2:10 pm

1 stop20h 30m

$424

San DiegoOttawa

SAN - YOW

SANYOW

San Diego

jue. 3/12

9:07 pm-12:39 am

2 stops48h 32m

Ottawa

jue. 3/19

9:30 am-8:45 pm

1 stop14h 15m

$430

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

mar. 3/10

10:15 am-3:35 pm

2 stops26h 20m

Toronto Pearson Intl

lun. 3/16

4:45 pm-9:51 am

2 stops20h 06m

$431

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

mié. 2/18

10:19 am-3:35 pm

2 stops26h 16m

Toronto Pearson Intl

mié. 3/11

4:45 pm-7:50 am

2 stops18h 05m

$439

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

mar. 3/17

9:00 pm-3:35 pm

2 stops15h 35m

Toronto Pearson Intl

lun. 3/23

4:45 pm-8:15 am

2 stops18h 30m

$440

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 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, June is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of $74). Flying from San Diego to Region of Ontario in September is currently the most expensive (average of $253). 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 enero 29, 2026.

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 enero 29, 2026.

The most flights from SAN to CAON are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 enero 29, 2026.
See what other customers who have flown with Porter Airlines, Delta, and United Airlines from San Diego to Ontario 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.
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

6.9

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

6.9

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Delta
7.9
Good
8,127 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

6.9

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,215 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

6.9

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
American Airlines
7.2
Good
11,206 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

6.9

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,667 reviews
Porter Airlines
7.9
Good
412 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

6.9

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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.

  • How long is the flight from San Diego to Region of Ontario?

    Departing from San Diego to Region of Ontario will take you 11h 10m. Airlines will cover a distance of 2360 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $106 on Porter Airlines. Other airlines that offer cheap prices include United Airlines from $123 and Air Canada from $128 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 cheapest flights from San Diego to Region of Ontario?

    On average you can expect to pay $274 for a flight from San Diego to Region of Ontario. The cheapest flight overall is $122 while the most popular route, (San Diego - Toronto Pearson Intl) is currently priced at $245.

  • 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, June is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of $74). Flying from San Diego to Region of Ontario in September is currently the most expensive (average of $253). 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 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 enero 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$130Average$279FlexibilityNo cancel feeOn-time52%
DeltaCheapest$132Average$407FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$140Average$409FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$146Average$288FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$155Average$496FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$319Average$541FlexibilityNo cancel feeOn-time71%

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