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Cheap flights from Ontario to California from C$ 179

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 19/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LAX
29 May — 5 Jun1
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 29 April 2026.

Fri 5/612:40 p.m.
YYZ
-
LAS
2 stops12h 00m
WestJet
Sun 14/65:35 p.m.
LAS
-
YYZ
1 stop9h 35m
WestJet
Deal found 25/4C$ 270
Sun 10/510:00 a.m.
YYZ
-
LAS
1 stop10h 15m
WestJet
Sat 16/58:30 a.m.
LAS
-
YYZ
2 stops12h 29m
WestJet
Deal found 26/4C$ 272
Sun 10/56:10 a.m.
YYZ
-
LAS
2 stops14h 05m
WestJet
Wed 13/56:10 p.m.
LAS
-
YYZ
1 stop9h 45m
WestJet
Deal found 26/4C$ 273
Sat 6/69:00 a.m.
YYZ
-
LAS
1 stop11h 15m
WestJet
Sat 13/66:10 p.m.
LAS
-
YYZ
1 stop9h 45m
WestJet
Deal found 27/4C$ 275
Mon 1/67:00 a.m.
YYZ
-
LAS
1 stop8h 55m
WestJet
Fri 5/68:30 a.m.
LAS
-
YYZ
1 stop9h 45m
WestJet
Deal found 25/4C$ 276
Fri 5/612:40 p.m.
YYZ
-
LAS
1 stop8h 55m
WestJet
Mon 8/68:30 a.m.
LAS
-
YYZ
1 stop9h 45m
WestJet
Deal found 26/4C$ 277
Fri 19/67:00 a.m.
YYZ
-
LAS
1 stop8h 55m
WestJet
Thu 25/64:35 p.m.
LAS
-
YYZ
1 stop9h 35m
WestJet
Deal found 28/4C$ 279
Fri 5/67:00 a.m.
YYZ
-
LAS
2 stops11h 45m
WestJet
Wed 17/61:20 p.m.
LAS
-
YYZ
1 stop8h 45m
WestJet
Deal found 28/4C$ 281
Fri 19/612:40 p.m.
YYZ
-
LAS
1 stop8h 55m
WestJet
Mon 22/64:35 p.m.
LAS
-
YYZ
1 stop9h 35m
WestJet
Deal found 26/4C$ 283
Fri 5/67:00 a.m.
YYZ
-
LAS
2 stops11h 45m
WestJet
Tue 16/61:20 p.m.
LAS
-
YYZ
2 stops31h 39m
WestJet
Deal found 28/4C$ 284
Mon 8/66:15 a.m.
YYZ
-
LAS
1 stop9h 40m
WestJet
Sat 13/68:30 a.m.
LAS
-
YYZ
1 stop9h 45m
WestJet
Deal found 25/4C$ 285
Mon 1/66:10 p.m.
YHM
-
LAS
2 stops21h 20m
WestJet
Thu 4/65:35 p.m.
LAS
-
YHM
2 stops20h 40m
WestJet
Deal found 25/4C$ 347

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 29 April 2026.

Round-trip from

C$ 270

One-way from

C$ 179

Popular in

December

Cheapest in

September

Average price

C$ 501

Good round-trip deal

C$ 244 or less

Good one-way deal

C$ 197 or less
WestJet
  • WestJet
  • 5/6-14/6
  • 3 total stops
  • 21h 35m total
  • Ontario to California
Search Deals
WestJet
  • WestJet
  • 19/6
  • 1 total stop
  • 8h 50m total
  • Ontario to California
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 29 April 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

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Fri 5/6

5:15 p.m.-9:54 p.m.

1 stop7h 39m

Las Vegas Harry Reid Intl

Sat 6/6

12:36 a.m.-9:54 a.m.

1 stop6h 18m

C$ 340

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Fri 5/6

5:15 p.m.-9:54 p.m.

1 stop7h 39m

Las Vegas Harry Reid Intl

Mon 8/6

10:00 p.m.-1:47 p.m.

1 stop12h 47m

C$ 354

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 9/5

4:18 p.m.-8:48 p.m.

1 stop7h 30m

Las Vegas Harry Reid Intl

Tue 12/5

11:56 a.m.-9:32 p.m.

1 stop6h 36m

C$ 358

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Tue 12/5

10:45 a.m.-8:03 p.m.

2 stops12h 18m

Las Vegas Harry Reid Intl

Tue 12/5

11:59 p.m.-11:49 a.m.

1 stop8h 50m

C$ 359

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Fri 29/5

11:00 a.m.-12:46 a.m.

2 stops16h 46m

Las Vegas Harry Reid Intl

Sat 6/6

12:36 a.m.-9:54 a.m.

1 stop6h 18m

C$ 365

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Mon 25/5

6:10 a.m.-7:57 p.m.

1 stop16h 47m

Las Vegas Harry Reid Intl

Wed 3/6

11:30 p.m.-9:54 a.m.

1 stop7h 24m

C$ 365

HamiltonLas Vegas

YHM - LAS

YHMLAS

Hamilton

Sun 31/5

6:10 p.m.-5:15 p.m.

1 stop26h 05m

Las Vegas Harry Reid Intl

Thu 4/6

6:10 p.m.-5:15 p.m.

1 stop20h 05m

C$ 366

HamiltonLas Vegas

YHM - LAS

YHMLAS

Hamilton

Tue 16/6

6:10 p.m.-12:30 p.m.

2 stops21h 20m

Las Vegas Harry Reid Intl

Fri 19/6

6:10 p.m.-5:15 p.m.

1 stop20h 05m

C$ 366

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Wed 27/5

2:30 p.m.-10:19 p.m.

1 stop10h 49m

Las Vegas Harry Reid Intl

Fri 29/5

4:07 p.m.-9:54 a.m.

1 stop14h 47m

C$ 366

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 9/5

11:00 a.m.-7:07 p.m.

2 stops11h 07m

Las Vegas Harry Reid Intl

Mon 11/5

7:07 p.m.-10:04 a.m.

2 stops11h 57m

C$ 366

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

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

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 75 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 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$ 445). Flying from Region of Ontario to California in December is currently the most expensive (average of C$ 617). 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 29 April 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.

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 25 April 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. Sunday 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 29 April 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
435 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
435 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Transat
7.8
Good
543 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,677 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
WestJet
7.2
Good
3,328 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,982 reviews
Porter Airlines
8.0
Very good
435 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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, WestJet, and Delta can get you from Region of Ontario to California in just under 7h 39m. Your travel time can differ by up to 18h 26m. 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$ 136. Users have also found prices from C$ 142 and C$ 171 on Porter Airlines and Air Canada, 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, September is the cheapest month in which you can book a flight from Region of Ontario to California (average of C$ 445). Flying from Region of Ontario to California in December is currently the most expensive (average of C$ 617). 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

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.
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Top 10 airlines flying from Ontario to California

Discover the top 10 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 29 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 115AverageC$ 467FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
American AirlinesCheapestC$ 131AverageC$ 593FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 191AverageC$ 430FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 193AverageC$ 639FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 226AverageC$ 495FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 248AverageC$ 465FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Alaska AirlinesCheapestC$ 287AverageC$ 436FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 289AverageC$ 631FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 307AverageC$ 545FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
APG AirlinesCheapestC$ 603AverageC$ 604FlexibilityNo 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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