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Cheap flights from California to Ontario from C$ 127

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
23 Dec — 30 Dec1
1 adult

Cheap flight deals from California to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from California (USCA) to Ontario (CAON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 December 2024.

Round-trip from

C$ 240

One-way from

C$ 127
WestJet
  • WestJet
  • 8/1-11/1
  • 1 total stop
  • 14h 05m total
  • California to Ontario
Search Deals
8/1
  • 8/1
  • 1 total stop
  • 15h 12m total
  • California to Ontario
Search Deals

Find flight deals from California to Ontario

Cheapest flights from California to Ontario
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 18 December 2024.

Sat 28/1210:35 p.m.LAS - YYZ
Nonstop4h 20mPorter Airlines
Sat 4/12:05 p.m.YYZ - LAS
Nonstop5h 03mPorter Airlines
Deal found 18/12C$ 277
Sat 28/1210:35 p.m.LAS - YYZ
Nonstop4h 20mMultiple Airlines
Sat 4/110:40 p.m.YYZ - LAS
1 stop24h 37mMultiple Airlines
Deal found 18/12C$ 338
Tue 24/126:25 p.m.LAS - YYZ
1 stop8h 54mWestJet
Sun 5/18:00 p.m.YYZ - LAS
Nonstop5h 09mWestJet
Deal found 17/12C$ 348
Mon 30/121:40 p.m.SFO - YYZ
Nonstop5h 02mMultiple Airlines
Wed 8/18:00 p.m.YYZ - SFO
1 stop14h 14mMultiple Airlines
Deal found 18/12C$ 414
Thu 26/126:06 p.m.SAN - YYZ
1 stop8h 49mMultiple Airlines
Sun 5/19:00 p.m.YYZ - SAN
1 stop15h 16mMultiple Airlines
Deal found 18/12C$ 434
Tue 31/127:10 a.m.LAX - YYZ
Nonstop4h 45mPorter Airlines
Thu 9/15:30 p.m.YYZ - LAX
Nonstop5h 42mPorter Airlines
Deal found 17/12C$ 451
Wed 25/126:00 a.m.LAS - YYZ
1 stop7h 19mAmerican Airlines
Tue 31/126:10 a.m.YYZ - LAS
1 stop15h 40mAmerican Airlines
Deal found 17/12C$ 453
Tue 31/127:10 a.m.LAX - YYZ
Nonstop4h 45mMultiple Airlines
Wed 8/18:00 p.m.YYZ - LAX
1 stop14h 33mMultiple Airlines
Deal found 17/12C$ 453
Mon 23/1210:19 p.m.ONT - YYZ
2 stops29h 00mMultiple Airlines
Wed 8/18:00 p.m.YYZ - ONT
1 stop14h 09mMultiple Airlines
Deal found 17/12C$ 467
Mon 30/128:36 p.m.LAX - YUL
1 stop16h 59mMultiple Airlines
Tue 7/15:35 p.m.YUL - LAX
1 stop18h 40mMultiple Airlines
Deal found 18/12C$ 480
Fri 27/124:45 p.m.LAX - YYZ
Nonstop4h 41mUnited Airlines
Wed 1/18:00 a.m.YYZ - LAX
Nonstop5h 32mUnited Airlines
Deal found 18/12C$ 480
Tue 31/125:05 a.m.ONT - YYZ
1 stop14h 47mUnited Airlines
Sun 26/16:10 a.m.YYZ - ONT
1 stop18h 47mUnited Airlines
Deal found 17/12C$ 513

Find flights from California to Ontario within your budget

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 629,999 searches. Data last updated 18 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 8/1

11:25 p.m.-6:46 a.m.

Nonstop4h 21m

Toronto Pearson Intl

Sat 11/1

6:30 a.m.-1:14 p.m.

1 stop9h 44m

C$ 240

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Tue 4/3

11:25 p.m.-6:43 a.m.

Nonstop4h 18m

Toronto Pearson Intl

Thu 6/3

1:10 p.m.-3:13 p.m.

Nonstop5h 03m

C$ 254

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 8/1

2:35 p.m.-9:50 p.m.

Nonstop4h 15m

Toronto Pearson Intl

Fri 10/1

7:25 p.m.-9:28 p.m.

Nonstop5h 03m

C$ 260

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Wed 8/1

6:15 a.m.-11:55 p.m.

2 stops38h 40m

Toronto Pearson Intl

Fri 10/1

10:20 a.m.-1:05 p.m.

Nonstop5h 45m

C$ 284

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Fri 10/1

2:05 p.m.-9:50 p.m.

Nonstop4h 45m

Toronto Pearson Intl

Fri 17/1

10:20 a.m.-1:05 p.m.

Nonstop5h 45m

C$ 286

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 15/1

7:00 a.m.-11:34 p.m.

2 stops13h 34m

Toronto Pearson Intl

Tue 28/1

1:50 p.m.-9:42 p.m.

1 stop10h 52m

C$ 286

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 8/1

11:25 a.m.-6:43 p.m.

Nonstop4h 18m

Toronto Pearson Intl

Sat 11/1

8:15 p.m.-10:18 p.m.

Nonstop5h 03m

C$ 308

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 26/1

2:54 p.m.-6:46 a.m.

1 stop12h 52m

Toronto Pearson Intl

Fri 31/1

8:00 p.m.-7:16 a.m.

1 stop14h 16m

C$ 310

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Thu 23/1

7:35 a.m.-3:26 p.m.

Nonstop4h 51m

Toronto Pearson Intl

Wed 29/1

1:50 p.m.-9:42 p.m.

1 stop10h 52m

C$ 311

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Fri 10/1

12:55 p.m.-8:45 p.m.

Nonstop4h 50m

Toronto Pearson Intl

Sat 18/1

9:25 a.m.-12:03 p.m.

Nonstop5h 38m

C$ 333

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/12

Showing 1-10 of 60 results
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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.

Travel insights for flights from California to Ontario

Get recent, data-driven insights about flights from California to Ontario including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from California to Region of Ontario (average of C$ 178). Flying from California to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 18 December 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Region of Ontario as you normally would.

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 18 December 2024.

The most flights from USCA to CAON are scheduled on a Wednesday (20 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 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 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 18 December 2024.
Read reviews from past customers who have flown Lufthansa, United Airlines and American Airlines from California to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines
8.0
Very good
9,554 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines
7.9
Good
283 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Transat
7.8
Good
389 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    C$ 134 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and Porter Airlines, with prices starting from C$ 137 and C$ 139, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California to Ontario 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 California to Region of Ontario?

    Currently, October is the cheapest month in which you can book a flight from California to Region of Ontario (average of C$ 178). Flying from California to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 California to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from California to Ontario

Discover the top 6 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 629,999 searches. Data last updated 18 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 208AverageC$ 630FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 229AverageC$ 803FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Lynx AirCheapestC$ 246AverageC$ 307FlexibilityNo cancel feeOn-timeN/A
Search Lynx Air flights
Air TransatCheapestC$ 247AverageC$ 575FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJetCheapestC$ 255AverageC$ 545FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 359AverageC$ 745FlexibilityNo cancel feeOn-time69%
Search United 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 California to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from California today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from California to Ontario?

Cheapflights helps you find that perfect flight to Ontario from California by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from California to Ontario with no change fees?

Certainly. Search results for flights to Ontario from California shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from California to Ontario become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from California today and book when prices fit your budget.

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