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Cheap flights from Ontario to California from C$ 223

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to California

Enter your travel dates to find the best prices.

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 10 June 2026.

Thu 22/103:50 p.m.
YYZ
-
LAS
1 stop8h 50m
WestJet
Mon 26/101:10 p.m.
LAS
-
YYZ
Nonstop4h 22m
WestJet
Deal found 7/6C$ 358
Fri 23/1012:40 p.m.
YYZ
-
LAS
2 stops12h 00m
WestJet
Mon 26/101:10 p.m.
LAS
-
YYZ
Nonstop4h 22m
WestJet
Deal found 7/6C$ 363
Thu 15/103:50 p.m.
YYZ
-
LAS
1 stop8h 50m
WestJet
Mon 26/101:10 p.m.
LAS
-
YYZ
Nonstop4h 22m
WestJet
Deal found 7/6C$ 364
Sun 26/710:30 p.m.
YYZ
-
LAS
1 stop17h 00m
WestJet
Fri 31/71:45 p.m.
LAS
-
YYZ
1 stop8h 20m
WestJet
Deal found 9/6C$ 367
Fri 18/93:50 p.m.
YYZ
-
LAS
1 stop8h 50m
WestJet
Mon 21/98:30 a.m.
LAS
-
YYZ
1 stop8h 35m
WestJet
Deal found 8/6C$ 368
Mon 20/78:35 p.m.
YYZ
-
LAS
Nonstop4h 47m
Porter Airlines
Wed 22/79:45 a.m.
LAS
-
YYZ
Nonstop4h 24m
Porter Airlines
Deal found 9/6C$ 370
Fri 11/910:50 a.m.
YYZ
-
LAS
1 stop9h 25m
WestJet
Mon 14/96:10 p.m.
LAS
-
YYZ
1 stop8h 35m
WestJet
Deal found 8/6C$ 371
Sun 6/96:00 a.m.
YYZ
-
LAS
1 stop9h 55m
WestJet
Sat 12/96:10 p.m.
LAS
-
YYZ
1 stop9h 45m
WestJet
Deal found 4/6C$ 372
Thu 20/86:00 a.m.
YYZ
-
LAS
2 stops12h 45m
WestJet
Sun 23/88:30 a.m.
LAS
-
YYZ
2 stops22h 15m
WestJet
Deal found 9/6C$ 374
Mon 10/83:30 p.m.
YYZ
-
LAS
2 stops28h 45m
WestJet
Sat 15/88:30 a.m.
LAS
-
YYZ
2 stops12h 29m
WestJet
Deal found 9/6C$ 375
Mon 26/107:55 p.m.
YYZ
-
LAS
Nonstop5h 07m
Porter Airlines
Fri 30/1011:05 p.m.
LAS
-
YYZ
Nonstop4h 15m
Porter Airlines
Deal found 8/6C$ 376
Sat 3/102:55 p.m.
YTZ
-
LAS
1 stop8h 13m
United Airlines
Sat 10/106:00 a.m.
LAS
-
YTZ
1 stop7h 41m
United Airlines
Deal found 9/6C$ 404

Find flight deals from Ontario to California

Keep the following information in mind while searching for Ontario to California flight deals. Data was last updated 10 June 2026.

Round-trip from

C$ 358

One-way from

C$ 223

Popular in

June

Cheapest in

September

Average price

C$ 625

Good round-trip deal

C$ 570 or less

Good one-way deal

C$ 295 or less
WestJet
  • WestJet
  • 22/10-26/10
  • 1 total stop
  • 13h 12m total
  • Ontario to California
Search Deals
WestJet
  • WestJet
  • 14/10
  • 1 total stop
  • 11h 15m total
  • Ontario to California
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 629,999 searches. Data last updated 10 June 2026.
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

Cheapest round-trip

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Sat 3/10

2:55 p.m.-8:08 p.m.

1 stop8h 13m

Las Vegas Harry Reid Intl

Sat 10/10

6:00 a.m.-4:41 p.m.

1 stop7h 41m

C$ 404

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Fri 14/8

7:20 p.m.-9:27 a.m.

1 stop17h 07m

Las Vegas Harry Reid Intl

Sun 16/8

11:55 p.m.-10:06 a.m.

1 stop7h 11m

C$ 414

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Wed 15/7

12:15 p.m.-6:33 p.m.

1 stop9h 18m

Las Vegas Harry Reid Intl

Fri 17/7

11:59 p.m.-10:06 a.m.

1 stop7h 07m

C$ 420

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Wed 1/7

7:20 p.m.-9:19 a.m.

1 stop16h 59m

Las Vegas Harry Reid Intl

Sat 4/7

7:00 a.m.-4:41 p.m.

1 stop6h 41m

C$ 420

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Tue 30/6

8:45 a.m.-1:04 p.m.

1 stop7h 19m

Las Vegas Harry Reid Intl

Wed 1/7

11:59 p.m.-9:54 a.m.

1 stop6h 55m

C$ 427

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Tue 30/6

5:15 p.m.-9:59 p.m.

1 stop7h 44m

Las Vegas Harry Reid Intl

Sat 4/7

7:40 a.m.-9:32 p.m.

2 stops10h 52m

C$ 431

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 20/6

5:45 p.m.-10:36 p.m.

1 stop7h 51m

Las Vegas Harry Reid Intl

Sun 13/9

9:35 a.m.-10:58 p.m.

1 stop10h 23m

C$ 485

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Thu 18/6

12:09 p.m.-7:59 p.m.

1 stop10h 50m

Las Vegas Harry Reid Intl

Sat 12/9

12:10 p.m.-10:58 p.m.

1 stop7h 48m

C$ 485

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 4/7

11:38 a.m.-7:46 p.m.

1 stop11h 08m

Las Vegas Harry Reid Intl

Thu 9/7

10:41 a.m.-11:58 p.m.

1 stop10h 17m

C$ 492

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Wed 1/7

12:09 p.m.-8:02 p.m.

1 stop10h 53m

Las Vegas Harry Reid Intl

Sat 4/7

9:59 a.m.-11:02 p.m.

1 stop10h 03m

C$ 494

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from Region of Ontario to California (average of C$ 471). Flying from Region of Ontario to California in December is currently the most expensive (average of C$ 632). 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 10 June 2026.

It’s optimal to fly from Region of Ontario to California in the morning. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the evening.

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 10 June 2026.

The most flights from CAON to USCA are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

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

How far ahead should I book a flight from Region of Ontario to California?

To ensure you get the cheapest price possible for a flight from Region of Ontario to California, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 8 June 2026.

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

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 10 June 2026.
Check out reviews from past customers who have flown with Porter Airlines,Air Transat, andUnited Airlines 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.
Porter Airlines
8.0
Very good
438 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
438 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Transat
7.8
Good
555 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,803 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
WestJet
7.2
Good
3,356 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,154 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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?

    United Airlines, Delta, and Porter Airlines can get you from Region of Ontario to California in just under 7h 51m. Your travel time can differ by up to 44m. The distance between Region of Ontario and California is about 3119 km. This flight may include one or multiple stops.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 139. Users have also found prices from C$ 151 and C$ 178 on Porter Airlines and Air Transat, respectively.

  • 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, October is the cheapest month in which you can book a flight from Region of Ontario to California (average of C$ 471). Flying from Region of Ontario to California in December is currently the most expensive (average of C$ 632). 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 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 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 134AverageC$ 635FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 194AverageC$ 458FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 203AverageC$ 699FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 231AverageC$ 511FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 258AverageC$ 553FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Alaska AirlinesCheapestC$ 293AverageC$ 401FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 315AverageC$ 657FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 315AverageC$ 603FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
APG AirlinesCheapestC$ 615AverageC$ 617FlexibilityNo cancel feeOn-timeN/A
Search APG Airlines flights

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.

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