$122+ 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Diego to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 30, 2025.
Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $259 (Kiwi.com) |
One-way from | $122 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $287 |
Good round-trip deal | $296 or less |
Good one-way deal | $155 or less |
Find flight deals from San Diego to Ontario
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 April 30, 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 April 30, 2025.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
This Trip.com deal was found by Cheapflights users on 4/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gotogate deal was found by Cheapflights users on 4/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/27. 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.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight 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 April 30, 2025.
Use the filters below to find and compare flights from San Diego to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Wed 6/11
12:52 pm-6:52 am
2 stops15h 00m
Toronto Pearson Intl
Wed 6/18
6:30 am-1:20 pm
1 stop9h 50m
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Fri 5/23
2:05 pm-5:51 am
2 stops12h 46m
Toronto Pearson Intl
Mon 5/26
6:30 am-1:20 pm
1 stop9h 50m
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Thu 8/28
11:15 am-12:43 am
1 stop10h 28m
Montreal Pierre Elliott Trudeau Intl
Fri 8/29
6:45 am-12:55 pm
1 stop9h 10m
San DiegoToronto
SAN - YKF
SANYKF
San Diego
Tue 6/3
8:48 pm-12:46 am
2 stops24h 58m
Toronto Region of Waterloo Intl
Tue 6/10
6:00 am-1:20 pm
1 stop10h 20m
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Sun 6/8
1:00 pm-7:08 am
1 stop15h 08m
Montreal Pierre Elliott Trudeau Intl
Wed 6/11
7:00 am-1:20 pm
1 stop9h 20m
San DiegoToronto
SAN - YKF
SANYKF
San Diego
Thu 7/10
11:15 am-12:46 am
1 stop10h 31m
Toronto Region of Waterloo Intl
Tue 8/5
6:00 am-1:20 pm
1 stop10h 20m
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Fri 5/16
12:55 pm-8:48 pm
Nonstop4h 53m
Toronto Pearson Intl
Tue 5/20
9:30 am-11:53 am
Nonstop5h 23m
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Fri 6/13
10:30 pm-12:42 pm
1 stop11h 12m
Toronto Pearson Intl
Sat 6/21
9:35 am-11:50 am
Nonstop5h 15m
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Fri 5/16
1:55 pm-9:45 pm
Nonstop4h 50m
Toronto Pearson Intl
Fri 5/23
10:45 am-12:55 pm
Nonstop5h 10m
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Mon 5/26
10:30 pm-10:40 am
1 stop9h 10m
Montreal Pierre Elliott Trudeau Intl
Tue 6/3
6:00 am-11:53 am
1 stop8h 53m
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.
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 30, 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.
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 30, 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.
Entertainment
Boarding
Food
Crew
Overall
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Food
Crew
Overall
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Food
Crew
Overall
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Food
Crew
Overall
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Food
Crew
Overall
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Food
Crew
Overall
Comfort
Reviews
James,Apr 2025
LAX - SFO
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 April 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$131 | Average$309 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$146 | Average$308 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$153 | Average$531 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$221 | Average$531 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$317 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$317 | Average$506 | FlexibilityNo cancel fee | On-time71% |