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Cheap flights from Ontario to California from C$ 159
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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
4 Aug — 11 Aug1
Round-trip
1 adult
Economy
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 30 July 2025.
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 30 July 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 30 July 2025.
Thu 4/910:40 a.m.YYZ - LAX
Nonstop5h 20mPorter Airlines
Wed 10/92:00 p.m.LAX - YYZ
Nonstop4h 50mPorter Airlines
Deal found 30/7C$ 247
Sat 6/128:00 a.m.YYZ - LAX
2 stops11h 58mWestJet
Sun 14/127:00 a.m.LAX - YYZ
2 stops13h 39mWestJet
Deal found 27/7C$ 248
Fri 12/98:30 p.m.YYZ - LAS
Nonstop4h 43mAir Canada
Fri 19/911:20 p.m.LAS - YYZ
Nonstop4h 20mAir Canada
Deal found 29/7C$ 254
Thu 4/910:40 a.m.YYZ - LAX
Nonstop5h 20mMultiple Airlines
Wed 10/910:30 p.m.LAX - YYZ
1 stop9h 09mMultiple Airlines
Deal found 30/7C$ 255
Tue 2/93:00 p.m.YYZ - LAS
1 stop9h 29mWestJet
Wed 10/912:35 p.m.LAS - YYZ
Nonstop4h 23mWestJet
Deal found 28/7C$ 255
Sat 30/88:05 p.m.YYZ - LAS
Nonstop4h 50mPorter Airlines
Thu 4/912:20 p.m.LAS - YYZ
Nonstop4h 25mPorter Airlines
Deal found 29/7C$ 257
Tue 2/99:30 a.m.YYZ - LAS
Nonstop4h 45mMultiple Airlines
Thu 11/912:35 p.m.LAS - YYZ
Nonstop4h 23mMultiple Airlines
Deal found 28/7C$ 258
Sun 31/88:05 p.m.YYZ - LAS
Nonstop4h 50mAir Transat
Thu 4/912:20 p.m.LAS - YYZ
Nonstop4h 25mAir Transat
Deal found 29/7C$ 259
Wed 10/96:35 p.m.YYZ - LAX
Nonstop5h 18mAir Canada
Sat 20/99:55 p.m.LAX - YYZ
Nonstop4h 51mAir Canada
Deal found 30/7C$ 270
Fri 12/98:25 p.m.YTZ - LAX
1 stop17h 40mAir Canada
Sat 20/910:30 p.m.LAX - YTZ
1 stop8h 15mAir Canada
Deal found 29/7C$ 273
Sun 7/93:25 p.m.YTZ - LAS
1 stop9h 47mAir Canada
Wed 10/911:25 a.m.LAS - YTZ
1 stop17h 40mAir Canada
Deal found 29/7C$ 286
Wed 20/88:10 a.m.YUL - LAX
Nonstop5h 57mAir Canada
Sun 31/810:30 p.m.LAX - YUL
Nonstop5h 29mAir Canada
Deal found 29/7C$ 301
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 629,999 searches. Data last updated 30 July 2025.
Use the filters below to find and compare flights from Ontario to California that are best for you.
Fly from
Ontario
Fly to
California
Route
Depart
Return
Price
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
Thu 4/9
10:40 a.m.-1:00 p.m.
Nonstop5h 20m
Los Angeles
Wed 10/9
2:00 p.m.-9:50 p.m.
Nonstop4h 50m
C$ 247
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
Sat 6/12
8:00 a.m.-4:58 p.m.
2 stops11h 58m
Los Angeles
Sun 14/12
7:00 a.m.-11:39 p.m.
2 stops13h 39m
C$ 248
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Fri 12/9
8:30 p.m.-10:13 p.m.
Nonstop4h 43m
Las Vegas Harry Reid Intl
Fri 19/9
11:20 p.m.-6:40 a.m.
Nonstop4h 20m
C$ 254
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
Thu 4/9
10:40 a.m.-1:00 p.m.
Nonstop5h 20m
Los Angeles
Wed 10/9
10:30 p.m.-10:39 a.m.
1 stop9h 09m
C$ 255
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Tue 2/9
3:00 p.m.-9:29 p.m.
1 stop9h 29m
Las Vegas Harry Reid Intl
Mon 8/9
12:35 p.m.-7:58 p.m.
Nonstop4h 23m
C$ 255
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Sat 30/8
8:05 p.m.-9:55 p.m.
Nonstop4h 50m
Las Vegas Harry Reid Intl
Thu 4/9
12:20 p.m.-7:45 p.m.
Nonstop4h 25m
C$ 257
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Tue 2/9
9:30 a.m.-11:15 a.m.
Nonstop4h 45m
Las Vegas Harry Reid Intl
Thu 11/9
12:35 p.m.-7:58 p.m.
Nonstop4h 23m
C$ 258
TorontoLas Vegas
YYZ - LAS
YYZLAS
Toronto Pearson Intl
Sun 31/8
8:05 p.m.-9:55 p.m.
Nonstop4h 50m
Las Vegas Harry Reid Intl
Thu 4/9
12:20 p.m.-7:45 p.m.
Nonstop4h 25m
C$ 259
TorontoLos Angeles
YYZ - LAX
YYZLAX
Toronto Pearson Intl
Wed 10/9
6:35 p.m.-8:53 p.m.
Nonstop5h 18m
Los Angeles
Sat 20/9
9:55 p.m.-5:46 a.m.
Nonstop4h 51m
C$ 270
TorontoLos Angeles
YTZ - LAX
YTZLAX
Toronto Island
Fri 12/9
8:25 p.m.-11:05 a.m.
1 stop17h 40m
Los Angeles
Sat 20/9
10:30 p.m.-9:45 a.m.
1 stop8h 15m
C$ 273
Showing 1-10 of 60 results
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.
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 Ontario to California
What is the cheapest month to book a flight from Region of Ontario to California?
Currently, September is the cheapest month in which you can book a flight from Region of Ontario to California (average of C$ 229). Flying from Region of Ontario to California in March is currently the most expensive (average of C$ 297). 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 30 July 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 30 July 2025.
The most flights from CAON to USCA are scheduled on a Wednesday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (12 on average).
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 30 July 2025.
Check out reviews from past customers who have flown with Alaska Airlines,Porter Airlines, andDelta from Ontario to California to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
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 9 airlines flying from Ontario to California
Discover the top 9 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 629,999 searches. Data last updated 30 July 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ontario to California?
Cheapflights makes it easy to find Ontario to California flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Ontario to California?
Cheapflights simply makes it quick and affordable to book flights from Ontario to California by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Ontario to California with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to California, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Ontario to California become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to California from Ontario today and book when prices fit your budget.