$109+ Cheap flights from Ontario to California
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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Ontario to California 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 California
Keep the following information in mind while searching for Ontario to California flight deals. Data was last updated junio 12, 2025.
Round-trip from | $166 (Trip.com) |
|---|---|
One-way from | $109 (Flightnetwork) |
Popular in | December |
Cheapest in | September |
Average price | $327 |
Good round-trip deal | $175 or less |
Good one-way deal | $147 or less |
Find flight deals from Ontario to California
Cheapest flights from Ontario to CaliforniaExplore the most affordable flight options available from Ontario to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
Explore the most affordable flight options available from Ontario to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com 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 6/11. 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.
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Flightnetwork deal was found by Cheapflights users on 6/12. 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 Flightnetwork 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 6/11. 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 Gotogate 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 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This flygcity.se deal was found by Cheapflights users on 6/10. 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 flygcity.se 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 6/11. 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 Trip.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 6/11. 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 United Airlines 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 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Flightnetwork deal was found by Cheapflights users on 6/9. 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 Flightnetwork 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 California 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 junio 12, 2025.
Use the filters below to find and compare flights from Ontario to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
mié. 8/27
3:00 pm-9:47 pm
1 stop9h 47m
Los Angeles
mié. 9/3
3:00 pm-5:51 am
2 stops11h 51m
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
sáb. 7/26
8:00 am-6:10 pm
2 stops13h 10m
Los Angeles
sáb. 8/2
2:00 pm-9:57 pm
Nonstop4h 57m
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
sáb. 7/19
8:05 pm-9:55 pm
Nonstop4h 50m
Las Vegas Harry Reid Intl
sáb. 7/26
10:55 pm-6:20 am
Nonstop4h 25m
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
lun. 9/22
8:30 pm-10:13 pm
Nonstop4h 43m
Las Vegas Harry Reid Intl
mar. 9/23
11:30 am-10:52 pm
1 stop8h 22m
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
mié. 6/25
12:00 pm-8:21 pm
1 stop11h 21m
Las Vegas Harry Reid Intl
mié. 7/2
8:00 am-8:54 pm
1 stop9h 54m
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
vie. 7/18
7:30 am-2:44 pm
1 stop10h 14m
Los Angeles
dom. 7/27
9:55 pm-5:45 am
Nonstop4h 50m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
jue. 7/10
6:45 am-1:00 pm
1 stop9h 15m
Los Angeles
mié. 7/16
2:00 pm-12:37 am
1 stop7h 37m
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
vie. 8/29
4:18 pm-9:21 pm
1 stop8h 03m
Los Angeles
sáb. 9/6
11:59 pm-9:58 am
1 stop6h 59m
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
mar. 10/28
2:00 pm-8:34 pm
1 stop9h 34m
Las Vegas Harry Reid Intl
mié. 11/12
11:45 pm-6:58 am
Nonstop4h 13m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
mié. 8/13
7:00 am-6:10 pm
2 stops14h 10m
Los Angeles
lun. 8/25
7:00 am-12:37 am
2 stops14h 37m
Best time to book a flight from Ontario to California
Have a flexible travel schedule? Discover the best time to fly to California from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to California
What is the cheapest month to book a flight from Region of Ontario to California?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to California (average of $246). Flying from Region of Ontario to California in March is currently the most expensive (average of $327). 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 CA?
Find hourly flight availability from Ontario to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.
When flying from Region of Ontario to California, 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 Region of Ontario to California
Explore weekly flight availability from Ontario to California. 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 junio 12, 2025.
The most flights from CAON to USCA are scheduled on a Monday (20 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (15 on average).
Rainfall in California by month
Plan your trip to California by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in California ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.
Temperature in California by month
Plan your trip to California by taking into account the average temperature totals by month.
If weather is an important factor for your trip to California, 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 73.4 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 California
Get insights into the airlines that provide service to California. 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 California. Reviews last updated junio 12, 2025.
See what other customers who have flown with Delta, Alaska Airlines and Porter Airlines from Ontario to California have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to California
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from Ontario to California
Discover the top 7 airlines that operate flights from Ontario to California. 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 junio 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$115 | Average$355 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$149 | Average$313 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$151 | Average$455 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$186 | Average$431 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$198 | Average$356 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$199 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$267 | Average$412 | FlexibilityNo cancel fee | On-timeN/A |