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$ 128. Users have also found prices from C$ 133 and C$ 136 on Porter Airlines 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 53 days in advance to save up to 74% 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 53 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$ 467, or C$ 764 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$ 421 per person but you can even find prices for as low as C$ 208. The most expensive prices can be found in the month of December. Opting for a September flight can save you 41% 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$ 128+ Flights from Ontario to California

Cheap flight deals from Ontario to California

Round-trip from	C$ 182
One-way from	C$ 128
Popular in	December
Cheapest in	September
Average price	C$ 385
Good round-trip deal	C$ 295 or less
Good one-way deal	C$ 205 or less

Air Canada
6/5-12/5
Nonstop
9h 14m total
Ontario to California

Search Deals

WestJet
26/5
1 total stop
18h 30m total
Ontario to California

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (C$ 59 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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 17 April 2025.

Tue 6/58:35 p.m.YYZ - LAS

Nonstop4h 55mAir Canada

Mon 12/511:30 p.m.LAS - YYZ

Nonstop4h 19mAir Canada

Deal found 17/4C$ 182

Wed 7/52:00 p.m.YYZ - LAS

1 stop9h 21mWestJet

Sun 11/58:00 a.m.LAS - YYZ

2 stops13h 35mWestJet

Deal found 17/4C$ 183

Thu 18/97:45 p.m.YKF - LAS

1 stop17h 55mWestJet

Mon 22/910:00 a.m.LAS - YKF

2 stops11h 45mWestJet

Deal found 16/4C$ 184

Wed 23/44:10 p.m.YTZ - LAS

1 stop7h 30mPorter Airlines

Wed 30/49:05 a.m.LAS - YTZ

1 stop6h 48mPorter Airlines

Deal found 16/4C$ 189

Wed 21/56:55 a.m.YYZ - LAS

1 stop7h 30mMultiple Airlines

Wed 28/56:20 p.m.LAS - YYZ

1 stop8h 54mMultiple Airlines

Deal found 17/4C$ 194

Wed 25/69:00 a.m.YYZ - LAX

2 stops14h 23mWestJet

Tue 19/811:40 a.m.LAX - YYZ

1 stop9h 44mWestJet

Deal found 16/4C$ 200

Tue 7/103:25 p.m.YTZ - LAS

1 stop9h 47mAir Canada

Tue 21/1011:15 p.m.LAS - YTZ

1 stop9h 30mAir Canada

Deal found 16/4C$ 205

Sun 11/58:05 p.m.YYZ - LAS

Nonstop4h 53mPorter Airlines

Tue 13/54:45 p.m.LAS - YYZ

Nonstop4h 27mPorter Airlines

Deal found 17/4C$ 230

Fri 9/510:05 a.m.YYZ - LAS

1 stop11h 07mUnited Airlines

Sat 10/512:59 a.m.LAS - YYZ

1 stop7h 35mUnited Airlines

Deal found 17/4C$ 232

Tue 6/59:45 a.m.YYZ - LAX

Nonstop5h 25mMultiple Airlines

Wed 14/56:05 p.m.LAX - YYZ

1 stop9h 09mMultiple Airlines

Deal found 16/4C$ 236

Sun 18/56:35 p.m.YYZ - LAX

Nonstop5h 24mAir Canada

Mon 26/510:20 p.m.LAX - YYZ

1 stop9h 19mAir Canada

Deal found 17/4C$ 237

Sat 16/86:45 a.m.YUL - LAX

2 stops14h 25mWestJet

Mon 18/811:40 a.m.LAX - YUL

1 stop10h 03mWestJet

Deal found 16/4C$ 243

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 17 April 2025.

Tue 6/58:35 p.m.YYZ - LAS

Nonstop4h 55mAir Canada

Mon 12/511:30 p.m.LAS - YYZ

Nonstop4h 19mAir Canada

Deal found 17/4C$ 182

Wed 7/52:00 p.m.YYZ - LAS

1 stop9h 21mWestJet

Sun 11/58:00 a.m.LAS - YYZ

2 stops13h 35mWestJet

Deal found 17/4C$ 183

Wed 30/44:10 p.m.YTZ - LAS

1 stop7h 30mPorter Airlines

Thu 1/59:10 a.m.LAS - YTZ

1 stop7h 17mPorter Airlines

Deal found 17/4C$ 189

Wed 21/56:55 a.m.YYZ - LAS

1 stop7h 30mMultiple Airlines

Wed 28/56:20 p.m.LAS - YYZ

1 stop8h 54mMultiple Airlines

Deal found 17/4C$ 194

Fri 9/510:05 a.m.YYZ - LAS

1 stop11h 07mUnited Airlines

Sat 10/512:59 a.m.LAS - YYZ

1 stop7h 35mUnited Airlines

Deal found 17/4C$ 232

Sat 10/55:20 p.m.YYZ - LAS

1 stop7h 40mAmerican Airlines

Sat 10/512:40 a.m.LAS - YYZ

1 stop13h 40mAmerican Airlines

Deal found 17/4C$ 287

Sat 24/51:50 p.m.YYZ - LAS

Nonstop4h 53mAir Transat

Tue 27/54:45 p.m.LAS - YYZ

Nonstop4h 27mAir Transat

Deal found 17/4C$ 319

Thu 29/54:30 p.m.YYZ - LAX

Nonstop5h 24mLufthansa

Wed 4/65:05 a.m.LAX - YYZ

1 stop7h 06mLufthansa

Deal found 17/4C$ 374

Sat 31/56:30 a.m.YYZ - LAX

1 stop11h 12mDelta

Fri 6/612:59 a.m.LAX - YYZ

1 stop7h 26mDelta

Deal found 16/4C$ 376

Thu 22/56:00 a.m.YKF - LAS

1 stop14h 35mWestJet

Sun 25/59:10 p.m.LAS - YKF

2 stops24h 36mWestJet

Deal found 17/4C$ 193

Tue 7/103:25 p.m.YTZ - LAS

1 stop9h 47mAir Canada

Tue 21/1011:15 p.m.LAS - YTZ

1 stop9h 30mAir Canada

Deal found 17/4C$ 207

Wed 25/69:00 a.m.YYZ - LAX

2 stops14h 23mWestJet

Tue 19/811:40 a.m.LAX - YYZ

1 stop9h 44mWestJet

Deal found 16/4C$ 200

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 17 April 2025.

Tue 6/58:35 p.m.YYZ - LAS

Nonstop4h 55mAir Canada

Mon 12/511:30 p.m.LAS - YYZ

Nonstop4h 19mAir Canada

Deal found 17/4C$ 182

Wed 30/47:25 p.m.YYZ - LAS

Nonstop5h 03mPorter Airlines

Mon 5/511:10 p.m.LAS - YYZ

Nonstop4h 25mPorter Airlines

Deal found 17/4C$ 197

Mon 19/59:45 a.m.YYZ - LAS

Nonstop4h 54mMultiple Airlines

Sat 24/54:45 p.m.LAS - YYZ

Nonstop4h 27mMultiple Airlines

Deal found 17/4C$ 207

Sun 25/59:45 a.m.YYZ - LAS

Nonstop4h 54mWestJet

Wed 4/612:35 p.m.LAS - YYZ

Nonstop4h 24mWestJet

Deal found 17/4C$ 225

Thu 5/66:35 p.m.YYZ - LAX

Nonstop5h 24mAir Canada

Mon 9/69:55 p.m.LAX - YYZ

Nonstop4h 51mAir Canada

Deal found 16/4C$ 229

Fri 23/57:45 p.m.YYZ - LAX

Nonstop5h 25mWestJet

Thu 29/511:10 p.m.LAX - YYZ

Nonstop4h 50mWestJet

Deal found 17/4C$ 232

Sat 10/512:45 p.m.YYZ - LAX

Nonstop5h 20mPorter Airlines

Sat 17/54:05 p.m.LAX - YYZ

Nonstop4h 53mPorter Airlines

Deal found 16/4C$ 254

Mon 23/610:40 a.m.YYZ - LAX

Nonstop5h 25mMultiple Airlines

Mon 30/611:10 p.m.LAX - YYZ

Nonstop4h 50mMultiple Airlines

Deal found 17/4C$ 259

Sun 22/68:30 a.m.YYZ - LAX

Nonstop5h 00mUnited Airlines

Fri 27/69:50 p.m.LAX - YYZ

Nonstop4h 50mUnited Airlines

Deal found 16/4C$ 311

Tue 20/51:50 p.m.YYZ - LAS

Nonstop4h 53mAir Transat

Thu 22/511:10 p.m.LAS - YYZ

Nonstop4h 25mAir Transat

Deal found 17/4C$ 319

Sun 27/410:20 a.m.YYZ - SAN

Nonstop5h 45mPorter Airlines

Wed 30/42:05 p.m.SAN - YYZ

Nonstop4h 45mPorter Airlines

Deal found 17/4C$ 327

Wed 3/99:30 a.m.YYZ - SAN

Nonstop5h 11mAir Canada

Wed 10/912:45 p.m.SAN - YYZ

Nonstop4h 55mAir Canada

Deal found 17/4C$ 337

Last-minute flights from Ontario to California
Discover last-minute flight deals from Ontario to California. Data last updated 17 April 2025 and is based on user searches.

Tue 22/48:10 p.m.YYZ - LAS

Nonstop4h 57mAir Canada

Tue 29/411:59 p.m.LAS - YYZ

1 stop6h 59mAir Canada

Deal found 17/4C$ 238

Tue 22/49:00 a.m.YYZ - LAS

1 stop15h 55mUnited Airlines

Tue 22/412:30 a.m.LAS - YYZ

1 stop8h 14mUnited Airlines

Deal found 16/4C$ 245

Tue 22/48:00 p.m.YYZ - LAS

Nonstop5h 13mWestJet

Tue 29/49:10 p.m.LAS - YYZ

1 stop13h 29mWestJet

Deal found 17/4C$ 280

Wed 23/44:10 p.m.YTZ - LAS

1 stop7h 30mPorter Airlines

Wed 30/49:05 a.m.LAS - YTZ

1 stop6h 48mPorter Airlines

Deal found 16/4C$ 189

Wed 23/46:25 a.m.YYZ - LAX

1 stop8h 12mAir Canada

Mon 5/510:20 p.m.LAX - YYZ

1 stop10h 19mAir Canada

Deal found 16/4C$ 319

Fri 25/411:25 a.m.YYZ - LAS

Nonstop5h 03mPorter Airlines

Mon 28/410:35 p.m.LAS - YYZ

Nonstop4h 20mPorter Airlines

Deal found 17/4C$ 220

Fri 25/45:30 p.m.YYZ - LAX

Nonstop5h 35mMultiple Airlines

Thu 1/57:00 a.m.LAX - YYZ

2 stops14h 35mMultiple Airlines

Deal found 16/4C$ 297

Sat 26/47:25 p.m.YYZ - LAS

Nonstop5h 03mMultiple Airlines

Fri 2/56:20 p.m.LAS - YYZ

1 stop8h 54mMultiple Airlines

Deal found 17/4C$ 202

Sat 26/45:30 p.m.YYZ - LAX

Nonstop5h 35mPorter Airlines

Thu 1/54:05 p.m.LAX - YYZ

Nonstop4h 53mPorter Airlines

Deal found 17/4C$ 270

Sun 27/43:45 p.m.YYZ - LAS

1 stop9h 47mAmerican Airlines

Wed 30/412:59 a.m.LAS - YYZ

1 stop8h 41mAmerican Airlines

Deal found 17/4C$ 290

Sun 27/47:20 p.m.YTZ - LAS

2 stops19h 13mAir Canada

Fri 2/511:30 p.m.LAS - YTZ

2 stops12h 20mAir Canada

Deal found 16/4C$ 311

Sun 27/410:20 a.m.YYZ - SAN

Nonstop5h 45mMultiple Airlines

Fri 2/58:29 a.m.SAN - YYZ

2 stops18h 45mMultiple Airlines

Deal found 17/4C$ 311

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 17 April 2025.

Mon 26/56:00 a.m.YKF - LAS

1 stop18h 30mWestJet

Deal found 17/4C$ 128

Wed 7/58:00 a.m.YYZ - LAS

2 stops12h 35mWestJet

Deal found 17/4C$ 130

Sun 18/57:00 a.m.YTZ - LAS

1 stop7h 25mPorter Airlines

Deal found 17/4C$ 133

Tue 17/612:00 p.m.YYZ - LAX

1 stop9h 10mWestJet

Deal found 16/4C$ 134

Wed 23/48:10 p.m.YYZ - LAS

Nonstop4h 57mAir Canada

Deal found 17/4C$ 136

Wed 30/42:00 p.m.YYZ - LAS

1 stop9h 40mPorter Airlines

Deal found 17/4C$ 140

Wed 28/57:25 a.m.YTZ - LAS

2 stops10h 32mAir Canada

Deal found 17/4C$ 141

Fri 9/55:30 p.m.YYZ - LAS

1 stop7h 42mUnited Airlines

Deal found 16/4C$ 147

Tue 17/66:35 p.m.YYZ - LAX

Nonstop5h 24mAir Canada

Deal found 16/4C$ 150

Mon 9/66:45 a.m.YUL - LAX

1 stop9h 20mPorter Airlines

Deal found 16/4C$ 154

Sat 10/511:00 a.m.YYZ - SAN

2 stops15h 19mMultiple Airlines

Deal found 16/4C$ 155

Mon 23/610:40 a.m.YYZ - LAX

Nonstop5h 25mPorter Airlines

Deal found 16/4C$ 166

Cheapflights Fare Finder

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

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 31/5

12:00 p.m.-8:21 p.m.

2 stops11h 21m

Las Vegas Harry Reid Intl

Tue 3/6

1:25 p.m.-6:52 a.m.

2 stops14h 27m

C$ 155

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 31/5

1:50 p.m.-3:43 p.m.

Nonstop4h 53m

Las Vegas Harry Reid Intl

Tue 3/6

1:25 p.m.-5:51 a.m.

2 stops13h 26m

C$ 158

TorontoLas Vegas

YKF - LAS

YKFLAS

Toronto Region of Waterloo Intl

Thu 18/9

7:45 p.m.-10:40 a.m.

1 stop17h 55m

Las Vegas Harry Reid Intl

Mon 22/9

10:00 a.m.-12:45 a.m.

2 stops11h 45m

C$ 184

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Wed 25/6

9:00 a.m.-8:23 p.m.

2 stops14h 23m

Los Angeles

Tue 19/8

11:40 a.m.-12:24 a.m.

1 stop9h 44m

C$ 200

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Tue 7/10

3:25 p.m.-10:12 p.m.

1 stop9h 47m

Las Vegas Harry Reid Intl

Tue 21/10

11:15 p.m.-11:45 a.m.

1 stop9h 30m

C$ 205

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Sat 3/5

5:30 p.m.-10:12 p.m.

1 stop7h 42m

Las Vegas Harry Reid Intl

Tue 6/5

12:59 a.m.-11:34 a.m.

1 stop7h 35m

C$ 215

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Fri 2/5

4:00 p.m.-10:19 p.m.

1 stop9h 19m

Las Vegas Harry Reid Intl

Tue 6/5

4:50 p.m.-6:04 a.m.

1 stop10h 14m

C$ 216

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Fri 2/5

6:55 a.m.-11:25 a.m.

1 stop7h 30m

Las Vegas Harry Reid Intl

Mon 5/5

11:10 p.m.-6:35 a.m.

Nonstop4h 25m

C$ 222

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Tue 6/5

9:45 a.m.-12:10 p.m.

Nonstop5h 25m

Los Angeles

Wed 14/5

6:05 p.m.-6:14 a.m.

1 stop9h 09m

C$ 236

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Sat 16/8

6:45 a.m.-6:10 p.m.

2 stops14h 25m

Los Angeles

Mon 18/8

11:40 a.m.-12:43 a.m.

1 stop10h 03m

C$ 243

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

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.

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, September is the cheapest month in which you can book a flight from Region of Ontario to California (average of C$ 230). 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 Monday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 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 Alaska Airlines, Porter Airlines and Delta 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.

Alaska Airlines

8.0

Very good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,887 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Porter Airlines

8.0

Very good

281 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,916 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Air Transat

7.8

Good

385 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,667 reviews

Alaska Airlines

8.0

Very good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 WestJet. According to our data, you can fly for as low as C$ 128. Users have also found prices from C$ 133 and C$ 136 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$ 230). 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 9 airlines flying from Ontario to California

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 210	AverageC$ 506	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Porter Airlines	CheapestC$ 229	AverageC$ 522	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
American Airlines	CheapestC$ 231	AverageC$ 636	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Transat	CheapestC$ 239	AverageC$ 485	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Delta	CheapestC$ 248	AverageC$ 536	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
United Airlines	CheapestC$ 287	AverageC$ 670	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 305	AverageC$ 637	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Alaska Airlines	CheapestC$ 336	AverageC$ 729	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
WestJet Encore	CheapestC$ 646	AverageC$ 703	FlexibilityNo cancel fee	On-timeN/A	Search WestJet Encore flights

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

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Cheap flights from Ontario to California from C$ 128

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 26/5. 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 17 April 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 17 April 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 17 April 2025.

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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.

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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?

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 17 April 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 17 April 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 Alaska Airlines, Porter Airlines and Delta 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 9 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 17 April 2025.