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$92+ Cheap flights from California to Ontario

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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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 December 22, 2024.

Round-trip from

$171
(Kiwi.com)

One-way from

$92
(Trip.com)
From California to Ontario
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One-way flight from California to Ontario
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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 December 22, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Fri 12/2710:30 amLAS - YYZ
1 stop16h 30mMultiple Airlines
Sun 1/59:00 pmYYZ - LAS
Nonstop5h 03mMultiple Airlines
Deal found 12/21$261
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Fri 12/2710:30 amLAS - YYZ
1 stop16h 30mWestJet
Sun 1/56:30 amYYZ - LAS
1 stop8h 59mWestJet
Deal found 12/21$277
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
Wed 12/257:16 pmSAN - YYZ
2 stops22h 57mMultiple Airlines
Mon 1/1310:20 amYYZ - SAN
Nonstop5h 45mMultiple Airlines
Deal found 12/20$294
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
Sat 12/287:26 pmSJC - YYZ
1 stop7h 29mMultiple Airlines
Sun 1/59:00 pmYYZ - SJC
1 stop13h 46mMultiple Airlines
Deal found 12/20$314
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Sat 12/289:31 pmLAX - YYZ
2 stops36h 24mMultiple Airlines
Sun 1/59:00 pmYYZ - LAX
1 stop15h 49mMultiple Airlines
Deal found 12/21$356
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Wed 12/257:00 amLAX - YYZ
2 stops13h 34mWestJet
Fri 1/1012:00 pmYYZ - LAX
1 stop10h 01mWestJet
Deal found 12/21$366
This Delta deal was found by Cheapflights users on 12/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/305:55 amSJC - YYZ
1 stop6h 59mDelta
Fri 1/310:05 amYYZ - SJC
2 stops14h 02mDelta
Deal found 12/20$368
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
Sat 12/284:39 pmSFO - YYZ
1 stop10h 16mMultiple Airlines
Sun 1/59:00 pmYYZ - SFO
2 stops23h 44mMultiple Airlines
Deal found 12/20$414
This Trip.com deal was found by Cheapflights users on 12/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/252:33 pmONT - YYZ
2 stops12h 46mMultiple Airlines
Wed 1/18:00 pmYYZ - ONT
1 stop15h 06mMultiple Airlines
Deal found 12/20$420
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Tue 12/319:21 pmLAX - YUL
2 stops14h 34mMultiple Airlines
Thu 1/162:35 pmYUL - LAX
1 stop8h 37mMultiple Airlines
Deal found 12/21$448
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/319:15 amLAX - YUL
1 stop10h 54mDelta
Wed 1/157:00 amYUL - LAX
1 stop12h 19mDelta
Deal found 12/21$499
This Mytrip deal was found by Cheapflights users on 12/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/268:36 pmLAX - YTZ
2 stops22h 47mMultiple Airlines
Thu 1/27:00 amYTZ - LAX
3 stops20h 24mMultiple Airlines
Deal found 12/20$502

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 2,558,603 searches. Data last updated December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 1/29

11:25 pm-6:46 am

Nonstop4h 21m

Toronto Pearson Intl

Sat 2/1

6:30 am-1:17 pm

1 stop9h 47m

$167

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Mon 1/20

11:25 pm-6:46 am

Nonstop4h 21m

Toronto Pearson Intl

Mon 1/27

7:25 pm-9:28 pm

Nonstop5h 03m

$168

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Thu 1/9

10:35 pm-5:55 am

Nonstop4h 20m

Toronto Pearson Intl

Wed 1/15

2:00 pm-8:40 pm

1 stop9h 40m

$185

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 3/5

1:50 pm-5:58 am

2 stops13h 08m

Toronto Pearson Intl

Wed 3/12

12:00 pm-9:44 pm

2 stops12h 44m

$186

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 1/22

11:45 pm-7:00 am

Nonstop4h 15m

Toronto Pearson Intl

Sat 1/25

8:15 pm-10:18 pm

Nonstop5h 03m

$207

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 1/8

7:00 am-7:06 pm

1 stop9h 06m

Toronto Pearson Intl

Wed 1/15

5:30 pm-8:12 pm

Nonstop5h 42m

$225

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 2/4

3:18 pm-6:43 am

1 stop12h 25m

Toronto Pearson Intl

Tue 2/11

8:00 pm-9:42 am

1 stop16h 42m

$227

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Mon 1/20

2:05 pm-9:50 pm

Nonstop4h 45m

Toronto Pearson Intl

Mon 1/27

6:30 am-6:58 pm

2 stops15h 28m

$228

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 2/4

11:36 am-6:43 am

1 stop16h 07m

Toronto Pearson Intl

Tue 2/11

8:00 pm-10:21 am

1 stop17h 21m

$230

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 1/22

6:00 am-3:02 pm

1 stop6h 02m

Toronto Pearson Intl

Sat 1/25

6:10 am-4:28 pm

1 stop13h 18m

$231

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

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, January is the cheapest month in which you can book a flight from California to Region of Ontario (average of $243). Flying from California to Region of Ontario in July is currently the most expensive (average of $359). 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 December 22, 2024.

When flying from California to Region of Ontario, 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 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 December 22, 2024.

The most flights from USCA to CAON are scheduled on a Friday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 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 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 December 22, 2024.
Get a feel of what it's like to fly with Porter Airlines, Air Canada and Alaska Airlines from California to Ontario by reading reviews from past customers. 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.
Delta
8.0
Very good
8,594 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Overall

8.0

Comfort

8.0

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
8,594 reviews
Delta
8.0
Very good
8,594 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Overall

8.0

Comfort

8.0

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
9,537 reviews
Delta
8.0
Very good
8,594 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Overall

8.0

Comfort

8.0

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
8,594 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Overall

8.0

Comfort

8.0

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
384 reviews
Delta
8.0
Very good
8,594 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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

Copa Airlines
7.7
Good
1,713 reviews
Delta
8.0
Very good
8,594 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.6

Food

7.3

Overall

8.0

Comfort

8.0

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?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $92. However, be on the lookout for offers from United Airlines and Alaska Airlines, as they are both options that can get you from California to Region of Ontario for a low price.

  • 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, January is the cheapest month in which you can book a flight from California to Region of Ontario (average of $243). Flying from California to Region of Ontario in July is currently the most expensive (average of $359). 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 8 airlines flying from California to Ontario

Discover the top 8 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 2,558,603 searches. Data last updated December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$88Average$416FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$145Average$596FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$148Average$533FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$158Average$662FlexibilityNo cancel feeOn-time69%
DeltaCheapest$159Average$559FlexibilityNo cancel feeOn-timeN/A
Lynx AirCheapest$171Average$239FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$172Average$443FlexibilityNo cancel feeOn-time60%
Air TransatCheapest$187Average$403FlexibilityNo cancel feeOn-time50%
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