$112+ Cheap flights from Ontario to San Diego (SAN)
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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Ontario to San Diego 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 Ontario to San Diego
Keep the following information in mind while searching for Ontario to San Diego flight deals. Data was last updated April 17, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $190 (Kiwi.com) |
One-way from | $112 (Trip.com) |
Popular in | September |
Cheapest in | February |
Average price | $282 |
Good round-trip deal | $230 or less |
Good one-way deal | $165 or less |
Find flight deals from Ontario to San Diego
Cheapest flights from Ontario to San DiegoExplore the most affordable flight options available from Ontario to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
Explore the most affordable flight options available from Ontario to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 4/15. 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.
This Mytrip deal was found by Cheapflights users on 4/16. 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 FlightHub deal was found by Cheapflights users on 4/16. 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 FlightHub 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 4/17. 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 Air Canada deal was found by Cheapflights users on 4/16. 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 Kiwi.com deal was found by Cheapflights users on 4/17. 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 4/15. 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.
This Air Canada deal was found by Cheapflights users on 4/16. 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 FlightHub deal was found by Cheapflights users on 4/16. 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 FlightHub 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 4/16. 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 Trip.com deal was found by Cheapflights users on 4/16. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to San Diego 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 17, 2025.
Use the filters below to find and compare flights from Ontario to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
TorontoSan Diego
YYZ - SAN
YYZSAN
Toronto Pearson Intl
Sat 5/10
11:00 am-11:19 pm
2 stops15h 19m
San Diego
Wed 5/14
6:15 am-5:20 pm
1 stop8h 05m
HamiltonSan Diego
YHM - SAN
YHMSAN
Hamilton
Tue 4/29
6:00 am-11:55 pm
2 stops20h 55m
San Diego
Tue 5/6
8:00 am-12:41 am
2 stops13h 41m
TorontoSan Diego
YKF - SAN
YKFSAN
Toronto Region of Waterloo Intl
Fri 5/30
6:00 am-11:56 pm
3 stops20h 56m
San Diego
Tue 6/3
8:48 pm-12:46 am
2 stops24h 58m
TorontoSan Diego
YKF - SAN
YKFSAN
Toronto Region of Waterloo Intl
Mon 8/4
6:00 am-1:20 pm
1 stop10h 20m
San Diego
Sun 8/10
11:15 am-12:46 am
1 stop10h 31m
OttawaSan Diego
YOW - SAN
YOWSAN
Ottawa
Sun 8/3
6:00 am-1:20 pm
1 stop10h 20m
San Diego
Sun 8/10
11:15 am-12:41 am
1 stop10h 26m
TorontoSan Diego
YTZ - SAN
YTZSAN
Toronto Island
Sat 5/3
12:25 pm-7:45 pm
1 stop10h 20m
San Diego
Sun 5/11
8:00 am-9:35 pm
1 stop10h 35m
TorontoSan Diego
YYZ - SAN
YYZSAN
Toronto Pearson Intl
Sun 4/27
10:20 am-1:05 pm
Nonstop5h 45m
San Diego
Sun 5/4
1:55 pm-9:45 pm
Nonstop4h 50m
TorontoSan Diego
YYZ - SAN
YYZSAN
Toronto Pearson Intl
Wed 4/30
9:25 am-11:48 am
Nonstop5h 23m
San Diego
Fri 5/9
12:55 pm-8:48 pm
Nonstop4h 53m
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Thu 9/25
4:45 pm-7:35 pm
Nonstop5h 50m
San Diego
Sun 9/28
8:10 am-4:40 pm
Nonstop5h 30m
TorontoSan Diego
YYZ - SAN
YYZSAN
Toronto Pearson Intl
Fri 8/15
6:30 am-1:20 pm
1 stop9h 50m
San Diego
Sun 8/24
11:15 am-10:54 pm
1 stop8h 39m
Best time to book a flight from Ontario to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to San Diego
What is the cheapest month to book a flight from Region of Ontario to San Diego?
Currently, August is the cheapest month in which you can book a flight from Region of Ontario to San Diego (average of $286). Flying from Region of Ontario to San Diego in March is currently the most expensive (average of $366). 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 ON to SAN?
Find hourly flight availability from Ontario to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to San Diego as you normally would.
Weekly flight availability from Region of Ontario to San Diego
Explore weekly flight availability from Ontario to San Diego. 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 17, 2025.
The most flights from CAON to SAN 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 San Diego by month
Plan your trip to San Diego by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.
Temperature in San Diego by month
Plan your trip to San Diego by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated April 17, 2025.
See what other customers who have flown with Alaska Airlines, Porter Airlines and Delta from Ontario to San Diego have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Crew
Food
Entertainment
Comfort
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Crew
Food
Entertainment
Comfort
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Crew
Food
Entertainment
Comfort
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Crew
Food
Entertainment
Comfort
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Crew
Food
Entertainment
Comfort
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Crew
Food
Entertainment
Comfort
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Related info for your journey
Find useful and relevant information for your journey from Ontario to San Diego. 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 Ontario to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Ontario to San Diego
Discover the top 6 airlines that operate flights from Ontario to San Diego. 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 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$115 | Average$255 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$186 | Average$511 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$234 | Average$408 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$236 | Average$447 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$252 | Average$449 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$264 | Average$491 | FlexibilityNo cancel fee | On-timeN/A |