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

For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as C$ 138. Users have also found prices from C$ 138 and C$ 139 on WestJet and Air Canada, respectively.

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

Travellers have found it’s best to book a flight 52 days in advance to save up to 75% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 52 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Region of Ontario to California 1-2 weeks in advance for as low as C$ 481, or C$ 821 for flights within the next 24 hours.

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

September is one of the best times of the year to fly to California from Region of Ontario. Prices for September average C$ 445 per person but you can even find prices for as low as C$ 213. The most expensive prices can be found in the month of December. Opting for a September flight can save you 36% on your journey compared to booking in December

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.

C$ 138+ Flights from Ontario to California

Cheap flight deals from Ontario to California

Round-trip from	C$ 202
One-way from	C$ 138
Popular in	December
Cheapest in	September
Average price	C$ 433
Good round-trip deal	C$ 347 or less
Good one-way deal	C$ 204 or less

WestJet
6/4-9/4
1 total stop
13h 19m total
Ontario to California

Search Deals

Porter Airlines
25/2
1 total stop
9h 25m total
Ontario to California

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (C$ 42 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 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

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 22 February 2025.

Sun 6/48:00 p.m.YYZ - LAS

Nonstop5h 13mWestJet

Wed 9/41:20 p.m.LAS - YYZ

1 stop8h 06mWestJet

Deal found 21/2C$ 202

Mon 10/32:00 p.m.YYZ - LAS

1 stop9h 40mPorter Airlines

Fri 14/310:35 p.m.LAS - YYZ

Nonstop4h 20mPorter Airlines

Deal found 22/2C$ 204

Tue 25/27:25 p.m.YYZ - LAS

Nonstop5h 03mMultiple Airlines

Wed 5/36:30 p.m.LAS - YYZ

1 stop8h 47mMultiple Airlines

Deal found 22/2C$ 207

Wed 2/44:10 p.m.YTZ - LAS

1 stop7h 30mPorter Airlines

Wed 9/49:10 a.m.LAS - YTZ

1 stop6h 43mPorter Airlines

Deal found 21/2C$ 214

Tue 8/47:30 a.m.YYZ - LAS

1 stop11h 20mAir Canada

Tue 15/411:59 p.m.LAS - YYZ

1 stop6h 59mAir Canada

Deal found 22/2C$ 214

Wed 2/48:00 p.m.YYZ - ONT

1 stop14h 25mMultiple Airlines

Tue 8/42:43 p.m.ONT - YYZ

1 stop13h 00mMultiple Airlines

Deal found 21/2C$ 227

Tue 22/46:55 p.m.YYZ - LAS

1 stop8h 54mUnited Airlines

Tue 29/412:59 a.m.LAS - YYZ

1 stop7h 31mUnited Airlines

Deal found 21/2C$ 227

Wed 2/47:25 a.m.YTZ - LAS

2 stops14h 08mAir Canada

Wed 9/45:10 p.m.LAS - YTZ

2 stops18h 40mAir Canada

Deal found 21/2C$ 234

Tue 25/37:25 p.m.YYZ - LAS

Nonstop5h 05mAir Transat

Tue 1/49:00 a.m.LAS - YYZ

Nonstop4h 17mAir Transat

Deal found 21/2C$ 251

Tue 11/31:30 p.m.YUL - LAS

2 stops10h 24mWestJet

Tue 18/38:40 a.m.LAS - YUL

2 stops12h 59mWestJet

Deal found 22/2C$ 264

Mon 10/36:10 p.m.YOW - LAS

Nonstop5h 30mMultiple Airlines

Tue 11/31:20 p.m.LAS - YOW

1 stop8h 24mMultiple Airlines

Deal found 22/2C$ 297

Tue 25/33:45 p.m.YUL - LAS

1 stop9h 13mAmerican Airlines

Tue 15/411:44 p.m.LAS - YUL

1 stop9h 00mAmerican Airlines

Deal found 21/2C$ 297

Best flights from Ontario to California
Discover carefully curated flight deals from Ontario to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 22 February 2025.

Sun 6/48:00 p.m.YYZ - LAS

Nonstop5h 13mWestJet

Wed 9/41:20 p.m.LAS - YYZ

1 stop8h 06mWestJet

Deal found 21/2C$ 202

Mon 10/32:00 p.m.YYZ - LAS

1 stop9h 40mPorter Airlines

Fri 14/310:35 p.m.LAS - YYZ

Nonstop4h 20mPorter Airlines

Deal found 22/2C$ 204

Tue 25/27:25 p.m.YYZ - LAS

Nonstop5h 03mMultiple Airlines

Wed 5/36:30 p.m.LAS - YYZ

1 stop8h 47mMultiple Airlines

Deal found 22/2C$ 207

Tue 8/47:30 a.m.YYZ - LAS

1 stop11h 20mAir Canada

Tue 15/411:59 p.m.LAS - YYZ

1 stop6h 59mAir Canada

Deal found 22/2C$ 214

Tue 22/46:55 p.m.YYZ - LAS

1 stop8h 54mUnited Airlines

Wed 30/41:40 p.m.LAS - YYZ

1 stop7h 50mUnited Airlines

Deal found 21/2C$ 227

Sat 26/45:50 p.m.YYZ - LAS

Nonstop5h 03mAir Transat

Fri 2/59:55 a.m.LAS - YYZ

Nonstop4h 27mAir Transat

Deal found 22/2C$ 291

Tue 25/32:15 p.m.YUL - LAS

1 stop11h 38mAmerican Airlines

Tue 15/411:44 p.m.LAS - YUL

1 stop9h 00mAmerican Airlines

Deal found 22/2C$ 297

Sat 15/34:00 p.m.YUL - LAS

1 stop9h 34mBritish Airways

Mon 24/37:40 p.m.LAS - YUL

2 stops14h 50mBritish Airways

Deal found 21/2C$ 371

Fri 9/53:59 p.m.YYZ - LAS

1 stop7h 01mDelta

Wed 14/511:30 p.m.LAS - YYZ

1 stop7h 59mDelta

Deal found 21/2C$ 380

Tue 25/24:20 p.m.YYZ - LAS

1 stop9h 20mAlaska Airlines

Fri 28/210:34 a.m.LAS - YYZ

1 stop25h 21mAlaska Airlines

Deal found 21/2C$ 407

Wed 2/44:10 p.m.YTZ - LAS

1 stop7h 30mPorter Airlines

Wed 9/49:10 a.m.LAS - YTZ

1 stop6h 43mPorter Airlines

Deal found 21/2C$ 214

Wed 2/48:00 p.m.YYZ - ONT

1 stop14h 25mMultiple Airlines

Tue 8/42:43 p.m.ONT - YYZ

1 stop13h 00mMultiple Airlines

Deal found 21/2C$ 227

Direct flights from Ontario to California
Explore direct flight options from Ontario to California based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 February 2025.

Fri 4/48:00 p.m.YYZ - LAS

Nonstop5h 13mWestJet

Mon 7/411:25 p.m.LAS - YYZ

Nonstop4h 18mWestJet

Deal found 21/2C$ 203

Mon 10/37:25 p.m.YYZ - LAS

Nonstop5h 05mPorter Airlines

Thu 13/39:00 a.m.LAS - YYZ

Nonstop4h 17mPorter Airlines

Deal found 22/2C$ 204

Sat 5/47:25 p.m.YYZ - LAS

Nonstop5h 03mMultiple Airlines

Wed 9/411:25 p.m.LAS - YYZ

Nonstop4h 18mMultiple Airlines

Deal found 21/2C$ 209

Wed 26/27:25 p.m.YYZ - LAS

Nonstop5h 03mAir Transat

Mon 3/34:15 p.m.LAS - YYZ

Nonstop4h 17mAir Transat

Deal found 21/2C$ 244

Sat 1/38:15 a.m.YYZ - LAS

Nonstop5h 04mAir Canada

Tue 4/311:35 p.m.LAS - YYZ

Nonstop4h 15mAir Canada

Deal found 20/2C$ 294

Wed 19/36:10 p.m.YOW - LAS

Nonstop5h 30mAir Transat

Wed 26/39:10 a.m.LAS - YOW

Nonstop4h 35mAir Transat

Deal found 22/2C$ 298

Fri 6/67:45 p.m.YYZ - LAX

Nonstop5h 25mWestJet

Mon 9/611:10 p.m.LAX - YYZ

Nonstop4h 50mWestJet

Deal found 20/2C$ 307

Sun 20/45:30 p.m.YYZ - LAX

Nonstop5h 35mPorter Airlines

Wed 23/41:25 p.m.LAX - YYZ

Nonstop4h 48mPorter Airlines

Deal found 21/2C$ 308

Fri 28/310:20 a.m.YYZ - SAN

Nonstop5h 45mPorter Airlines

Mon 31/32:05 p.m.SAN - YYZ

Nonstop4h 45mPorter Airlines

Deal found 22/2C$ 311

Wed 26/39:25 a.m.YYZ - SAN

Nonstop5h 38mAir Canada

Wed 28/512:55 p.m.SAN - YYZ

Nonstop4h 53mAir Canada

Deal found 21/2C$ 315

Mon 9/69:45 a.m.YYZ - LAX

Nonstop5h 20mMultiple Airlines

Fri 20/611:10 p.m.LAX - YYZ

Nonstop4h 50mMultiple Airlines

Deal found 20/2C$ 328

Fri 28/36:10 p.m.YOW - LAS

Nonstop5h 30mPorter Airlines

Mon 31/39:10 a.m.LAS - YOW

Nonstop4h 35mPorter Airlines

Deal found 22/2C$ 328

Last-minute flights from Ontario to California
Discover last-minute flight deals from Ontario to California. Data last updated 22 February 2025 and is based on user searches.

Tue 25/211:20 a.m.YYZ - LAS

1 stop10h 50mAir Canada

Tue 4/38:10 a.m.LAS - YYZ

1 stop9h 40mAir Canada

Deal found 21/2C$ 209

Tue 25/26:30 p.m.YYZ - LAS

1 stop8h 00mUnited Airlines

Mon 3/312:59 a.m.LAS - YYZ

1 stop7h 27mUnited Airlines

Deal found 21/2C$ 227

Wed 26/27:25 p.m.YYZ - LAS

Nonstop5h 03mAir Transat

Mon 3/34:15 p.m.LAS - YYZ

Nonstop4h 17mAir Transat

Deal found 21/2C$ 244

Thu 27/27:25 p.m.YYZ - ONT

1 stop15h 01mMultiple Airlines

Tue 11/32:43 p.m.ONT - YYZ

1 stop13h 00mMultiple Airlines

Deal found 20/2C$ 295

Fri 28/22:00 p.m.YYZ - SAN

2 stops32h 18mMultiple Airlines

Mon 3/39:56 a.m.SAN - YYZ

1 stop16h 59mMultiple Airlines

Deal found 22/2C$ 324

Sun 2/37:25 p.m.YYZ - LAS

Nonstop5h 05mMultiple Airlines

Thu 6/31:20 p.m.LAS - YYZ

1 stop8h 06mMultiple Airlines

Deal found 22/2C$ 203

Sun 2/32:50 p.m.YOW - LAS

1 stop9h 40mPorter Airlines

Mon 3/39:10 a.m.LAS - YOW

Nonstop4h 35mPorter Airlines

Deal found 21/2C$ 302

Sun 2/36:30 a.m.YYZ - LAX

1 stop31h 29mMultiple Airlines

Tue 8/45:25 p.m.LAX - YYZ

1 stop10h 18mMultiple Airlines

Deal found 21/2C$ 314

Mon 3/37:25 p.m.YYZ - LAS

Nonstop5h 05mPorter Airlines

Thu 6/310:35 p.m.LAS - YYZ

Nonstop4h 20mPorter Airlines

Deal found 21/2C$ 206

Mon 3/34:10 p.m.YTZ - LAS

1 stop7h 30mPorter Airlines

Wed 5/39:10 a.m.LAS - YTZ

1 stop6h 43mPorter Airlines

Deal found 21/2C$ 223

Mon 3/310:40 p.m.YYZ - LAS

1 stop16h 15mWestJet

Tue 4/36:30 p.m.LAS - YYZ

1 stop8h 47mWestJet

Deal found 22/2C$ 227

Mon 3/311:25 a.m.YOW - LAS

1 stop13h 33mUnited Airlines

Mon 3/312:50 a.m.LAS - YOW

1 stop6h 41mUnited Airlines

Deal found 21/2C$ 322

One-way flights from Ontario to California
Search for one-way flight options from Ontario to California. Find affordable one-way fares based on user searches. Data last updated 22 February 2025.

Tue 25/22:00 p.m.YTZ - LAS

1 stop9h 25mPorter Airlines

Deal found 21/2C$ 138

Mon 17/31:50 p.m.YYZ - LAS

1 stop10h 04mWestJet

Deal found 22/2C$ 138

Tue 4/37:00 a.m.YYZ - LAS

1 stop11h 46mAir Canada

Deal found 21/2C$ 139

Wed 26/38:00 p.m.YYZ - ONT

1 stop14h 26mMultiple Airlines

Deal found 21/2C$ 145

Tue 25/33:25 p.m.YTZ - LAS

1 stop9h 28mAir Canada

Deal found 21/2C$ 145

Tue 25/24:10 p.m.YYZ - LAS

1 stop7h 27mUnited Airlines

Deal found 21/2C$ 153

Mon 7/42:00 p.m.YYZ - LAS

1 stop9h 40mPorter Airlines

Deal found 21/2C$ 156

Thu 27/37:25 p.m.YYZ - LAS

Nonstop5h 05mAir Transat

Deal found 21/2C$ 163

Wed 5/36:10 p.m.YOW - LAS

Nonstop5h 30mPorter Airlines

Deal found 21/2C$ 172

Mon 17/32:45 p.m.YOW - LAS

1 stop10h 08mAir Canada

Deal found 20/2C$ 182

Wed 5/36:10 p.m.YOW - LAS

Nonstop5h 30mAir Transat

Deal found 21/2C$ 185

Wed 23/48:00 p.m.YYZ - LAX

1 stop18h 54mMultiple Airlines

Deal found 21/2C$ 190

Find flights from Ontario to California within your budget

Fly from

Fly to

Route

Depart

Return

Price

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Mon 17/3

1:50 p.m.-8:54 p.m.

1 stop10h 04m

Las Vegas Harry Reid Intl

Thu 3/4

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

Nonstop4h 18m

C$ 202

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Mon 24/3

7:25 p.m.-9:30 p.m.

Nonstop5h 05m

Las Vegas Harry Reid Intl

Mon 31/3

12:40 p.m.-12:40 a.m.

1 stop9h 00m

C$ 204

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Mon 17/3

2:00 p.m.-8:40 p.m.

1 stop9h 40m

Las Vegas Harry Reid Intl

Fri 21/3

10:35 p.m.-5:55 a.m.

Nonstop4h 20m

C$ 206

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Mon 24/3

4:10 p.m.-8:40 p.m.

1 stop7h 30m

Las Vegas Harry Reid Intl

Wed 2/4

9:10 a.m.-6:53 p.m.

1 stop6h 43m

C$ 213

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Tue 8/4

7:30 a.m.-3:50 p.m.

1 stop11h 20m

Las Vegas Harry Reid Intl

Tue 15/4

11:59 p.m.-9:58 a.m.

1 stop6h 59m

C$ 214

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Tue 22/4

6:55 p.m.-12:49 a.m.

1 stop8h 54m

Las Vegas Harry Reid Intl

Wed 30/4

1:40 p.m.-12:30 a.m.

1 stop7h 50m

C$ 227

TorontoOntario

YYZ - ONT

YYZONT

Toronto Pearson Intl

Wed 2/4

8:00 p.m.-7:25 a.m.

1 stop14h 25m

Ontario

Tue 8/4

2:43 p.m.-6:43 a.m.

1 stop13h 00m

C$ 227

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Wed 2/4

7:25 a.m.-6:33 p.m.

2 stops14h 08m

Las Vegas Harry Reid Intl

Wed 9/4

5:10 p.m.-2:50 p.m.

2 stops18h 40m

C$ 234

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Tue 25/3

7:25 p.m.-9:30 p.m.

Nonstop5h 05m

Las Vegas Harry Reid Intl

Tue 1/4

9:00 a.m.-4:17 p.m.

Nonstop4h 17m

C$ 251

MontrealLas Vegas

YUL - LAS

YULLAS

Montreal Pierre Elliott Trudeau Intl

Tue 11/3

1:30 p.m.-8:54 p.m.

2 stops10h 24m

Las Vegas Harry Reid Intl

Tue 18/3

8:40 a.m.-12:39 a.m.

2 stops12h 59m

C$ 264

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/2

Showing 1-10 of 60 results

...

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.

Travel insights for flights from Ontario to California

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

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$ 233). Flying from Region of Ontario to California in July is currently the most expensive (average of C$ 314). 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?

When flying from Region of Ontario to California, 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 Region of Ontario to California

The most flights from CAON to USCA 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 (10 on average).

Rainfall in California by month

In terms of precipitation, rainfall in California ranges from 0.0 - 87.0 mm per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit California when rainfall is around 0.0 mm.

Temperature in California by month

If weather is an important factor for your trip to California, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

Reviews of airlines servicing California

Get a feel of what it's like to fly with Delta, Alaska Airlines and Porter Airlines from Ontario to California by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,203 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

8,203 reviews

Delta

8.0

Very good

8,203 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Alaska Airlines

8.0

Very good

9,702 reviews

Delta

8.0

Very good

8,203 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines

7.9

Good

277 reviews

Delta

8.0

Very good

8,203 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat

7.8

Good

382 reviews

Delta

8.0

Very good

8,203 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,754 reviews

Delta

8.0

Very good

8,203 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from Region of Ontario to California one-way?
For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as C$ 138. Users have also found prices from C$ 138 and C$ 139 on WestJet 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$ 233). Flying from Region of Ontario to California in July is currently the most expensive (average of C$ 314). 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

Alternative routes for Ontario to California

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Complete your trip

California car rentals

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Direct flights to United States

Find a return flight route from California

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Top 10 airlines flying from Ontario to California

Airline	Cheapest	Average	Flexibility	On-time
Lynx Air	CheapestC$ 203	AverageC$ 336	FlexibilityNo cancel fee	On-timeN/A	Search Lynx Air flights
WestJet	CheapestC$ 228	AverageC$ 548	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Porter Airlines	CheapestC$ 231	AverageC$ 553	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Delta	CheapestC$ 254	AverageC$ 598	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
American Airlines	CheapestC$ 294	AverageC$ 649	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Transat	CheapestC$ 307	AverageC$ 501	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
United Airlines	CheapestC$ 312	AverageC$ 745	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 316	AverageC$ 685	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Alaska Airlines	CheapestC$ 411	AverageC$ 768	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
WestJet Encore	CheapestC$ 550	AverageC$ 809	FlexibilityNo cancel fee	On-timeN/A	Search WestJet Encore flights

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Cheap flights from Ontario to California from C$ 138

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.

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 22 February 2025.

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Find flight deals from Ontario to California

Cheapest flights from Ontario to CaliforniaExplore 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 22 February 2025.

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 22 February 2025.

Find flights from Ontario to California within your budget

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.

Travel insights for flights from Ontario to California

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

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

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 22 February 2025.

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 22 February 2025.

Rainfall in California by month

Plan your trip to California by taking into account the average rainfall totals by month.

Temperature in California by month

Plan your trip to California by taking into account the average temperature totals by month.

Reviews of airlines servicing California

Get a feel of what it's like to fly with Delta, Alaska Airlines and Porter Airlines from Ontario to California by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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

How can I find direct flights from Ontario to California?

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

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

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Alternative routes for Ontario to California

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Top 10 airlines flying from Ontario to California

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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 22 February 2025.