$85+ Cheap flights from California 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
juny 17 — juny 241
1 adult, Economy
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Find cheap flights from California 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
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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 California to Ontario
Keep the following information in mind while searching for California to Ontario flight deals. Data was last updated juny 12, 2025.
Round-trip from | $155 (Flightnetwork) |
|---|---|
One-way from | $85 (Air Canada) |
Popular in | December |
Cheapest in | May |
Average price | $318 |
Good round-trip deal | $218 or less |
Good one-way deal | $135 or less |
Find flight deals from California to Ontario
Cheapest flights from California to OntarioExplore the most affordable flight options available from California to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juny 12, 2025.
Explore the most affordable flight options available from California to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juny 12, 2025.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 9/1811:10 pmLAX - YYZ
Nonstop4h 49mWestJet
dv. 9/1910:00 amYYZ - LAX
1 stop10h 16mWestJet
Deal found 6/11![WestJet logo]()
$156
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dg. 9/710:30 pmLAX - YTZ
1 stop10h 15mAir Canada
dl. 9/153:25 pmYTZ - LAX
1 stop9h 10mAir Canada
Deal found 6/10![Air Canada logo]()
$179
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dv. 9/1911:10 pmLAX - YYZ
Nonstop4h 49mMultiple Airlines
dt. 9/2310:40 amYYZ - LAX
Nonstop5h 20mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$183
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dl. 9/89:55 pmLAX - YYZ
Nonstop4h 51mAir Canada
dc. 10/16:35 pmYYZ - LAX
Nonstop5h 18mAir Canada
Deal found 6/12![Air Canada logo]()
$198
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dl. 7/72:00 pmLAX - YUL
1 stop7h 37mPorter Airlines
dl. 7/146:45 amYUL - LAX
1 stop9h 15mPorter Airlines
Deal found 6/10![Porter Airlines logo]()
$220
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.
dc. 7/97:00 amLAX - YUL
2 stops14h 37mMultiple Airlines
dc. 7/166:45 amYUL - LAX
1 stop9h 15mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$228
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 8/2012:35 pmLAX - YUL
1 stop15h 33mWestJet
dc. 8/277:00 amYUL - LAX
1 stop10h 12mWestJet
Deal found 6/9![WestJet logo]()
$229
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.
dj. 7/312:05 pmSAN - YYZ
2 stops12h 46mWestJet
dc. 8/136:30 amYYZ - SAN
1 stop9h 50mWestJet
Deal found 6/11![WestJet logo]()
$233
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dg. 8/315:10 amLAX - YYZ
1 stop7h 01mUnited Airlines
dv. 10/37:00 amYYZ - LAX
1 stop15h 08mUnited Airlines
Deal found 6/10![United Airlines logo]()
$233
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 9/42:00 pmLAX - YYZ
Nonstop4h 53mPorter Airlines
ds. 9/1310:40 amYYZ - LAX
Nonstop5h 20mPorter Airlines
Deal found 6/11![Porter Airlines logo]()
$237
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 10/810:15 amSFO - YYZ
1 stop18h 00mFlair Airlines
dc. 11/128:00 pmYYZ - SFO
1 stop16h 30mFlair Airlines
Deal found 6/11![Flair Airlines logo]()
$243
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 8/147:30 amSFO - YKF
1 stop8h 26mWestJet
dg. 8/246:00 amYKF - SFO
2 stops10h 59mWestJet
Deal found 6/12![WestJet logo]()
$244
Cheapflights Fare Finder
Customize your flight search to find flights from California 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 juny 12, 2025.
Use the filters below to find and compare flights from California to Ontario that are best for you.
Fly from
California
Fly to
Ontario
Route
Depart
Return
Price
Los AngelesToronto
LAX - YYZ
LAXYYZ
Los Angeles
dj. 9/18
11:10 pm-6:59 am
Nonstop4h 49m
Toronto Pearson Intl
dv. 9/19
10:00 am-5:16 pm
1 stop10h 16m
$156
Los AngelesToronto
LAX - YTZ
LAXYTZ
Los Angeles
dg. 9/7
10:30 pm-11:45 am
1 stop10h 15m
Toronto Island
dl. 9/15
3:25 pm-9:35 pm
1 stop9h 10m
$179
Los AngelesToronto
LAX - YYZ
LAXYYZ
Los Angeles
dv. 9/19
11:10 pm-6:59 am
Nonstop4h 49m
Toronto Pearson Intl
dt. 9/23
10:40 am-1:00 pm
Nonstop5h 20m
$183
Los AngelesToronto
LAX - YYZ
LAXYYZ
Los Angeles
dl. 9/8
9:55 pm-5:46 am
Nonstop4h 51m
Toronto Pearson Intl
dc. 10/1
6:35 pm-8:53 pm
Nonstop5h 18m
$198
Los AngelesMontreal
LAX - YUL
LAXYUL
Los Angeles
dl. 7/7
2:00 pm-12:37 am
1 stop7h 37m
Montreal Pierre Elliott Trudeau Intl
dl. 7/14
6:45 am-1:00 pm
1 stop9h 15m
$220
Los AngelesMontreal
LAX - YUL
LAXYUL
Los Angeles
dc. 7/9
7:00 am-12:37 am
2 stops14h 37m
Montreal Pierre Elliott Trudeau Intl
dc. 7/16
6:45 am-1:00 pm
1 stop9h 15m
$228
Los AngelesMontreal
LAX - YUL
LAXYUL
Los Angeles
dc. 8/20
12:35 pm-7:08 am
1 stop15h 33m
Montreal Pierre Elliott Trudeau Intl
dc. 8/27
7:00 am-2:12 pm
1 stop10h 12m
$229
Los AngelesToronto
LAX - YYZ
LAXYYZ
Los Angeles
dg. 8/31
5:10 am-3:11 pm
1 stop7h 01m
Toronto Pearson Intl
dv. 10/3
7:00 am-7:08 pm
1 stop15h 08m
$233
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
dj. 7/31
2:05 pm-5:51 am
2 stops12h 46m
Toronto Pearson Intl
dc. 8/13
6:30 am-1:20 pm
1 stop9h 50m
$233
Los AngelesToronto
LAX - YYZ
LAXYYZ
Los Angeles
dj. 9/4
2:00 pm-9:53 pm
Nonstop4h 53m
Toronto Pearson Intl
ds. 9/13
10:40 am-1:00 pm
Nonstop5h 20m
$237
Showing 1-10 of 60 results
Best time to book a flight from California to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from California 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 California to Ontario
What is the cheapest month to book a flight from California to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from California to Region of Ontario (average of $243). Flying from California to Region of Ontario in July is currently the most expensive (average of $353). 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 CA to ON?
Find hourly flight availability from California 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 juny 12, 2025.
When flying from California 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 California to Region of Ontario
Explore weekly flight availability from California 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 juny 12, 2025.
The most flights from USCA to CAON are scheduled on a Thursday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).
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 juny 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Porter Airlines and Delta from California to Ontario by reading reviews from past customers. 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.
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSurinder,May 2025
SEA - YYZ
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSurinder,May 2025
SEA - YYZ
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSurinder,May 2025
SEA - YYZ
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSurinder,May 2025
SEA - YYZ
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSurinder,May 2025
SEA - YYZ
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentSurinder,May 2025
SEA - YYZ
Related info for your journey
Find useful and relevant information for your journey from California to Ontario. 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 California to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from California to Ontario
Discover the top 7 airlines that operate flights from California 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 juny 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$120 | Average$367 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$131 | Average$547 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$131 | Average$494 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$136 | Average$512 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$137 | Average$378 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$137 | Average$537 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$146 | Average$363 | FlexibilityNo cancel fee | On-time50% |