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$107+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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Find flight deals from Ontario to California

Cheapest flights from Ontario to California
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 octubre 29, 2025.

This SmartFares deal was found by Cheapflights users on 10/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/49:35 amYYZ - LAS
Nonstop5h 07mPorter Airlines
dom. 12/711:05 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/27$191
This SmartFares deal was found by Cheapflights users on 10/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/17:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
vie. 12/511:05 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/28$192
This SmartFares deal was found by Cheapflights users on 10/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/247:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
lun. 12/111:05 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/27$193
This SmartFares deal was found by Cheapflights users on 10/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/259:35 amYYZ - LAS
Nonstop5h 07mPorter Airlines
mar. 12/212:40 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/28$194
This SmartFares deal was found by Cheapflights users on 10/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/177:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
vie. 11/2111:05 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/27$195
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
jue. 11/277:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
sáb. 11/293:45 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/26$196
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
lun. 12/81:30 pmYYZ - LAS
1 stop9h 45mWestJet
vie. 12/127:05 pmLAS - YYZ
1 stop8h 53mWestJet
Deal found 10/29$197
This SmartFares deal was found by Cheapflights users on 10/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/277:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
mar. 12/23:45 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/27$198
This SmartFares deal was found by Cheapflights users on 10/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
vie. 12/1211:05 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/29$199
This SmartFares deal was found by Cheapflights users on 10/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/247:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
jue. 11/273:45 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/27$200
This FlightHub deal was found by Cheapflights users on 10/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/17:55 pmYYZ - LAS
Nonstop5h 07mPorter Airlines
sáb. 12/611:05 pmLAS - YYZ
Nonstop4h 15mPorter Airlines
Deal found 10/28$201
This Justfly.com deal was found by Cheapflights users on 10/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/83:30 pmYTZ - LAS
1 stop8h 09mAir Canada
jue. 12/114:45 pmLAS - YTZ
2 stops15h 57mAir Canada
Deal found 10/28$208

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 octubre 29, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$166
(Kiwi.com)

One-way from

$107
(iWofly)

Popular in

December

Cheapest in

May

Average price

$284

Good round-trip deal

$245 or less

Good one-way deal

$197 or less
Provider with most accurate pricing for Toronto (YTO)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Los Angeles flights.
Search Deals
From Ontario to California
Search Deals
One-way flight from Ontario to California
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Ontario to California.
Search Deals
Price to beat on a one-way flight from Ontario to California.
Search 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 octubre 29, 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

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mar. 11/18

3:45 pm-9:35 pm

1 stop8h 50m

Las Vegas Harry Reid Intl

vie. 11/21

11:30 pm-6:42 am

Nonstop4h 12m

$226

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mar. 1/20

2:57 pm-9:51 pm

1 stop9h 54m

Las Vegas Harry Reid Intl

mar. 1/27

12:59 am-2:20 pm

1 stop10h 21m

$227

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

lun. 11/24

3:45 pm-9:35 pm

1 stop8h 50m

Las Vegas Harry Reid Intl

jue. 11/27

5:55 am-3:02 pm

1 stop6h 07m

$234

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mar. 1/27

8:55 am-2:27 pm

2 stops8h 32m

Las Vegas Harry Reid Intl

mar. 2/3

12:59 am-2:20 pm

1 stop10h 21m

$235

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mié. 11/19

3:45 pm-9:35 pm

1 stop8h 50m

Las Vegas Harry Reid Intl

mié. 11/26

8:45 am-11:46 pm

1 stop12h 01m

$236

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

sáb. 11/29

4:10 pm-1:11 am

1 stop12h 01m

Las Vegas Harry Reid Intl

sáb. 12/6

11:59 pm-9:58 am

1 stop6h 59m

$242

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

lun. 11/24

3:45 pm-9:35 pm

1 stop8h 50m

Las Vegas Harry Reid Intl

dom. 11/30

12:59 am-2:20 pm

1 stop10h 21m

$246

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

vie. 11/21

2:57 pm-10:20 pm

1 stop10h 23m

Las Vegas Harry Reid Intl

jue. 11/27

5:55 am-3:02 pm

1 stop6h 07m

$251

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

vie. 11/21

4:10 pm-8:46 pm

1 stop7h 36m

Las Vegas Harry Reid Intl

lun. 11/24

11:30 pm-6:42 am

Nonstop4h 12m

$253

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

sáb. 11/22

4:10 pm-12:17 am

2 stops11h 07m

Las Vegas Harry Reid Intl

lun. 11/24

6:57 pm-2:20 pm

1 stop16h 23m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
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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, August is the cheapest month in which you can book a flight from Region of Ontario to California (average of $80). Flying from Region of Ontario to California in March is currently the most expensive (average of $185). 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 octubre 29, 2025.

When flying from Region of Ontario to California, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 15% versus a flight in the afternoon.

What is the cheapest day to fly from Region of Ontario to California?

Use this chart to determine the cheapest time to fly round-trip from Ontario to California. Price data was last updated on December 1, 2024.

Travelers seeking maximum savings on their Region of Ontario to California flight should consider departing on Sunday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Region of Ontario to California?

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 octubre 29, 2025.
Read through reviews of airlines operating flights from Ontario to California, such as Porter Airlines, Delta, and United Airlines. 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.
Porter Airlines
8.0
Very good
384 reviews

Boarding

8.2

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Boarding

8.2

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Delta
7.9
Good
7,994 reviews
Porter Airlines
8.0
Very good
384 reviews

Boarding

8.2

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
9,001 reviews
Porter Airlines
8.0
Very good
384 reviews

Boarding

8.2

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,148 reviews
Porter Airlines
8.0
Very good
384 reviews

Boarding

8.2

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,371 reviews
Porter Airlines
8.0
Very good
384 reviews

Boarding

8.2

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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.

  • How long is the flight from Region of Ontario to California?

    Airlines like United Airlines, Air Canada, and Delta fly from Region of Ontario to California in about 9h 54m. The time it takes to get you to your destination can typically vary by up to 1h 35m. There are 1938 mi between Region of Ontario and California. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Region of Ontario to California one-way?

    The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as $122. However, be on the lookout for offers from Air Canada and Air Transat, as they are both options that can get you from Region of Ontario to California for a low price.

  • Can I find deals for flights from Ontario to California that include hotel bookings?

    Yes. In addition to deals on Ontario to California flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to California.

  • Can I find deals for business class flights from Ontario to California?

    Yes. Cheapflights offers flight deals from Ontario to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to California?

    Currently, August is the cheapest month in which you can book a flight from Region of Ontario to California (average of $80). Flying from Region of Ontario to California in March is currently the most expensive (average of $185). 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.

See more FAQs

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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.
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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 octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$115Average$336FlexibilityNo cancel feeOn-time52%
WestJetCheapest$139Average$274FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$167Average$437FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$171Average$436FlexibilityNo cancel feeOn-time69%
DeltaCheapest$187Average$409FlexibilityNo cancel feeOn-timeN/A
Air TransatCheapest$196Average$357FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$199Average$474FlexibilityNo cancel feeOn-time71%

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