$106+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
ene. 11 — ene. 181
1 adult, Economy
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Cheapest flights from San Diego to OntarioExplore 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 diciembre 12, 2025.
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 diciembre 12, 2025.
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
mié. 12/3110:10 pmSAN - YYZ
1 stop29h 37mMultiple Airlines
dom. 1/111:30 pmYYZ - SAN
2 stops20h 47mMultiple Airlines
Deal found 12/9![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
mié. 12/2410:10 pmSAN - YYZ
1 stop29h 10mMultiple Airlines
mié. 12/3110:50 pmYYZ - SAN
2 stops16h 21mMultiple Airlines
Deal found 12/10![Multiple Airlines logo]()
$447
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
dom. 12/2110:10 pmSAN - YYZ
1 stop18h 45mMultiple Airlines
dom. 1/181:30 pmYYZ - SAN
2 stops21h 51mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 12/10. 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. 12/121:33 pmSAN - YYZ
1 stop13h 47mMultiple Airlines
dom. 12/144:45 pmYYZ - SAN
2 stops22h 53mMultiple Airlines
Deal found 12/10![Multiple Airlines logo]()
$515
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
sáb. 12/138:05 amSAN - YYZ
1 stop8h 50mMultiple Airlines
lun. 12/157:55 pmYYZ - SAN
2 stops53h 51mMultiple Airlines
Deal found 12/9![Multiple Airlines logo]()
$522
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
sáb. 12/207:21 pmSAN - YYZ
2 stops26h 05mMultiple Airlines
dom. 1/188:00 pmYYZ - SAN
1 stop15h 21mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$527
This Air Canada deal was found by Cheapflights users on 12/9. 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.
mié. 12/1012:40 pmSAN - YYZ
Nonstop4h 50mAir Canada
dom. 12/1410:00 amYYZ - SAN
Nonstop5h 38mAir Canada
Deal found 12/9![Air Canada logo]()
$533
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
dom. 12/141:48 pmSAN - YYZ
1 stop13h 32mMultiple Airlines
mar. 12/164:45 pmYYZ - SAN
1 stop9h 02mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
mié. 12/3111:11 amSAN - YUL
1 stop9h 34mMultiple Airlines
jue. 1/86:45 amYUL - SAN
2 stops33h 44mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
mié. 12/3111:11 amSAN - YUL
1 stop9h 34mMultiple Airlines
vie. 1/96:45 amYUL - SAN
2 stops42h 13mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$539
This Alaska Airlines deal was found by Cheapflights users on 12/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/146:15 amSAN - YYZ
1 stop30h 20mAlaska Airlines
mar. 12/164:45 pmYYZ - SAN
2 stops26h 35mAlaska Airlines
Deal found 12/11![Alaska Airlines logo]()
$540
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
mié. 12/3111:11 amSAN - YUL
1 stop9h 34mMultiple Airlines
dom. 1/116:45 amYUL - SAN
2 stops32h 29mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$555
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 diciembre 12, 2025.
Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $400 (Alaska Airlines) |
One-way from | $106 (Kiwi.com) |
Popular in | October |
Cheapest in | March |
Average price | $562 |
Good round-trip deal | $478 or less |
Good one-way deal | $338 or less |
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 diciembre 12, 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
mar. 1/20
6:15 am-3:35 pm
1 stop30h 20m
Toronto Pearson Intl
mar. 2/10
4:45 pm-10:07 am
1 stop20h 22m
$400
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
mié. 1/21
7:00 am-10:42 pm
2 stops12h 42m
Toronto Pearson Intl
mié. 2/11
7:45 am-6:00 pm
2 stops13h 15m
$403
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
dom. 1/25
6:55 pm-9:04 am
2 stops11h 09m
Toronto Pearson Intl
dom. 2/1
7:45 am-6:00 pm
2 stops13h 15m
$403
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
mié. 2/11
7:00 am-11:13 pm
2 stops13h 13m
Toronto Pearson Intl
vie. 2/27
12:11 pm-10:20 pm
2 stops13h 09m
$403
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
sáb. 1/17
7:00 am-11:13 pm
2 stops13h 13m
Toronto Pearson Intl
mar. 1/20
6:00 am-2:29 pm
2 stops11h 29m
$403
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
sáb. 1/24
5:35 pm-9:04 am
2 stops12h 29m
Toronto Pearson Intl
sáb. 1/31
6:00 am-4:30 pm
2 stops13h 30m
$403
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
dom. 1/25
9:45 pm-2:35 pm
1 stop13h 50m
Montreal Pierre Elliott Trudeau Intl
dom. 2/1
7:30 pm-11:47 am
1 stop19h 17m
$404
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
lun. 1/19
6:15 am-3:35 pm
1 stop30h 20m
Toronto Pearson Intl
lun. 2/9
4:45 pm-10:07 am
1 stop20h 22m
$408
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
vie. 1/16
12:35 pm-5:58 am
2 stops14h 23m
Toronto Pearson Intl
dom. 1/18
9:40 am-11:45 am
2 stops29h 05m
$410
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
jue. 1/29
6:55 pm-9:04 am
2 stops11h 09m
Toronto Pearson Intl
dom. 2/1
6:00 am-2:29 pm
2 stops11h 29m
$420
Showing 1-10 of 60 results
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, December is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of $20). Flying from San Diego to Region of Ontario in September is currently the most expensive (average of $244). 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 diciembre 12, 2025.
It’s optimal to fly from San Diego to Region of Ontario at noon. By choosing this option you can save up to 47% on the cost of your flight, compared to a flight in the evening.
What is the cheapest day to fly from San Diego to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Ontario. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their San Diego to Region of Ontario flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 diciembre 12, 2025.
The most flights from SAN to CAON are scheduled on a Monday (2 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 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 diciembre 12, 2025.
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.
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
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.
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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.
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 diciembre 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$146 | Average$308 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$148 | Average$314 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$149 | Average$416 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$221 | Average$494 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$417 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$319 | Average$598 | FlexibilityNo cancel fee | On-time71% |