How long is the flight from Region of Ontario to California?

Airlines like United Airlines, Air Canada, and Delta fly from Region of Ontario to California in about 9h 54m. The time it takes to get you to your destination can typically vary by up to 3h 15m. There are 1938 mi between Region of Ontario and California. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $102. However, be on the lookout for offers from Porter Airlines and Air Canada, as they are both options that can get you from Region of Ontario to California for a low price.

In terms of precipitation, rainfall in California ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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.

$109+ Flights from Ontario to California

Q: How much does it cost to fly round-trip from Region of Ontario to California?

Airfare is below average for this route at the moment. Region of Ontario to California flights typically cost between $317 and $582 in February. The cheapest round-trip price found within the last 3 days was $238 on WestJet (Feb 18-Mar 11).

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1. Tell us where you want to go

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Cheap 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 diciembre 15, 2025.

mié. 12/176:10 amYYZ - LAS

1 stop12h 43mUnited Airlines

sáb. 1/1711:53 amLAS - YYZ

2 stops8h 53mUnited Airlines

Deal found 12/13

$215

mar. 12/164:10 pmYYZ - LAS

2 stops10h 49mUnited Airlines

mié. 12/1711:55 amLAS - YYZ

2 stops9h 04mUnited Airlines

Deal found 12/13

$228

lun. 12/154:10 pmYYZ - LAS

1 stop7h 36mUnited Airlines

vie. 12/262:26 pmLAS - YYZ

1 stop6h 33mUnited Airlines

Deal found 12/12

$258

mié. 12/3110:50 pmYYZ - LAS

1 stop13h 09mWestJet

jue. 1/88:00 amLAS - YYZ

2 stops12h 39mWestJet

Deal found 12/14

$263

mié. 12/176:20 amYYZ - LAS

1 stop17h 19mAir Canada

jue. 12/189:10 amLAS - YYZ

1 stop10h 54mAir Canada

Deal found 12/14

$271

mar. 12/161:00 pmYYZ - LAS

1 stop10h 39mAir Canada

jue. 12/189:10 amLAS - YYZ

1 stop10h 54mAir Canada

Deal found 12/13

$272

mar. 12/164:45 pmYYZ - LAS

1 stop9h 08mMultiple Airlines

jue. 12/1812:40 pmLAS - YYZ

Nonstop4h 15mMultiple Airlines

Deal found 12/14

$276

mar. 12/164:45 pmYYZ - LAS

1 stop9h 08mMultiple Airlines

mié. 12/177:05 pmLAS - YYZ

1 stop14h 23mMultiple Airlines

Deal found 12/14

$301

mar. 12/232:45 pmYYZ - LAS

1 stop11h 00mUnited Airlines

lun. 1/267:06 pmLAS - YYZ

2 stops16h 08mUnited Airlines

Deal found 12/12

$303

lun. 12/1510:30 amYTZ - LAS

1 stop13h 09mAir Canada

lun. 12/229:10 amLAS - YTZ

1 stop7h 45mAir Canada

Deal found 12/13

$354

mié. 12/317:40 pmYYZ - LAX

1 stop16h 23mUnited Airlines

dom. 1/1111:05 pmLAX - YYZ

1 stop17h 40mUnited Airlines

Deal found 12/14

$399

lun. 12/156:45 amYUL - LAS

2 stops14h 26mWestJet

mié. 12/177:05 pmLAS - YUL

1 stop9h 00mWestJet

Deal found 12/14

$407

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 diciembre 15, 2025.

mar. 1/62:57 pmYYZ - LAS

1 stop9h 54mUnited Airlines

lun. 1/126:00 amLAS - YYZ

1 stop7h 52mUnited Airlines

Deal found 12/13

$201

jue. 1/1510:30 amYTZ - LAS

1 stop13h 09mAir Canada

mar. 1/209:00 amLAS - YTZ

1 stop9h 35mAir Canada

Deal found 12/12

$238

vie. 1/97:45 amYYZ - LAX

1 stop10h 01mDelta

sáb. 1/1010:25 pmLAX - YYZ

1 stop9h 55mDelta

Deal found 12/14

$269

mié. 4/1510:00 amYYZ - LAX

1 stop9h 58mWestJet

jue. 4/3012:35 pmLAX - YYZ

2 stops14h 37mWestJet

Deal found 12/13

$284

sáb. 1/179:45 amYYZ - SFO

Nonstop5h 53mPorter Airlines

mar. 1/201:40 pmSFO - YYZ

Nonstop4h 57mPorter Airlines

Deal found 12/13

$300

sáb. 2/144:45 pmYYZ - SFO

1 stop33h 11mAlaska Airlines

jue. 2/196:30 amSFO - YYZ

1 stop30h 05mAlaska Airlines

Deal found 12/13

$330

jue. 2/191:30 pmYTZ - LAX

1 stop10h 32mMultiple Airlines

sáb. 2/217:06 pmLAX - YTZ

2 stops20h 51mMultiple Airlines

Deal found 12/13

$359

mié. 1/142:45 pmYYZ - LAS

2 stops10h 14mUnited Airlines

sáb. 1/176:00 amLAS - YYZ

1 stop7h 52mUnited Airlines

Deal found 12/14

$201

sáb. 1/177:30 amYYZ - LAS

2 stops13h 59mUnited Airlines

sáb. 1/1711:18 pmLAS - YYZ

1 stop9h 30mUnited Airlines

Deal found 12/14

$201

jue. 1/1510:30 amYTZ - LAS

1 stop13h 09mAir Canada

lun. 1/199:00 amLAS - YTZ

1 stop7h 55mAir Canada

Deal found 12/14

$238

dom. 1/186:10 amYYZ - LAS

1 stop18h 49mUnited Airlines

jue. 1/226:00 amLAS - YYZ

1 stop7h 52mUnited Airlines

Deal found 12/12

$201

mar. 1/1312:45 pmYYZ - LAS

2 stops10h 47mUnited Airlines

sáb. 1/1711:53 amLAS - YYZ

2 stops8h 53mUnited Airlines

Deal found 12/13

$201

sáb. 1/1012:10 pmYYZ - LAX

1 stop12h 05mDelta

dom. 1/1110:20 pmLAX - YYZ

1 stop10h 00mDelta

Deal found 12/14

$269

mié. 4/154:15 pmYUL - LAS

2 stops31h 01mWestJet

dom. 4/199:15 pmLAS - YUL

2 stops38h 58mWestJet

Deal found 12/14

$292

mar. 3/32:45 pmYYZ - LAS

1 stop8h 37mUnited Airlines

vie. 3/611:59 pmLAS - YYZ

1 stop6h 59mUnited Airlines

Deal found 12/14

$205

lun. 1/127:45 amYYZ - LAX

1 stop10h 01mDelta

lun. 1/1910:20 pmLAX - YYZ

1 stop7h 44mDelta

Deal found 12/14

$274

mar. 3/104:10 pmYYZ - LAS

2 stops22h 02mUnited Airlines

dom. 3/1511:59 pmLAS - YYZ

1 stop16h 46mUnited Airlines

Deal found 12/14

$205

lun. 1/127:45 amYYZ - LAX

1 stop10h 01mDelta

dom. 1/186:00 amLAX - YYZ

1 stop10h 08mDelta

Deal found 12/13

$274

dom. 3/810:15 pmYYZ - SFO

2 stops40h 55mWestJet

dom. 3/151:00 pmSFO - YYZ

1 stop8h 26mWestJet

Deal found 12/14

$304

sáb. 3/144:45 pmYYZ - SFO

1 stop9h 11mAlaska Airlines

mié. 3/256:50 pmSFO - YYZ

2 stops17h 45mAlaska Airlines

Deal found 12/14

$340

vie. 1/99:45 amYYZ - SFO

Nonstop5h 53mPorter Airlines

jue. 3/261:40 pmSFO - YYZ

Nonstop4h 57mPorter Airlines

Deal found 12/12

$346

jue. 1/297:00 amYTZ - LAX

2 stops12h 29mMultiple Airlines

jue. 2/56:30 amLAX - YTZ

2 stops12h 33mMultiple Airlines

Deal found 12/15

$362

mar. 1/2712:30 pmYTZ - LAS

1 stop11h 09mAir Canada

mar. 2/37:15 amLAS - YTZ

2 stops11h 23mAir Canada

Deal found 12/13

$330

jue. 3/129:00 pmYYZ - LAS

1 stop14h 13mUnited Airlines

sáb. 3/2810:43 pmLAS - YYZ

1 stop7h 36mUnited Airlines

Deal found 12/13

$205

dom. 3/226:05 pmYYZ - LAX

1 stop8h 47mDelta

mié. 3/259:40 pmLAX - YYZ

1 stop10h 43mDelta

Deal found 12/13

$274

mié. 1/144:45 pmYYZ - SFO

1 stop9h 18mAlaska Airlines

mié. 1/212:58 pmSFO - YYZ

2 stops21h 37mAlaska Airlines

Deal found 12/15

$348

mié. 5/136:45 amYUL - LAS

2 stops16h 35mWestJet

vie. 5/2910:00 amLAS - YUL

2 stops11h 42mWestJet

Deal found 12/13

$326

jue. 2/1910:00 amYYZ - LAS

1 stop13h 22mUnited Airlines

mar. 2/245:20 amLAS - YYZ

1 stop6h 42mUnited Airlines

Deal found 12/15

$205

sáb. 3/216:05 pmYYZ - LAX

1 stop7h 30mDelta

sáb. 3/286:00 amLAX - YYZ

1 stop6h 08mDelta

Deal found 12/13

$274

mié. 1/2112:30 pmYTZ - LAS

1 stop11h 09mAir Canada

sáb. 1/247:15 amLAS - YTZ

2 stops11h 13mAir Canada

Deal found 12/12

$341

Last-minute flights from Ontario to California
Discover last-minute flight deals from Ontario to California. Data last updated diciembre 15, 2025 and is based on user searches.

jue. 1/88:00 pmYYZ - LAS

Nonstop5h 09mWestJet

jue. 1/158:00 amLAS - YYZ

2 stops12h 38mWestJet

Deal found 12/14

$167

dom. 1/119:40 amYYZ - LAS

2 stops11h 31mWestJet

dom. 1/187:05 pmLAS - YYZ

1 stop8h 55mWestJet

Deal found 12/14

$165

mar. 1/139:40 amYYZ - LAS

2 stops11h 31mWestJet

sáb. 1/179:15 pmLAS - YYZ

1 stop24h 23mWestJet

Deal found 12/13

$175

jue. 1/1510:30 amYTZ - LAS

1 stop13h 09mAir Canada

mié. 1/219:00 amLAS - YTZ

1 stop9h 35mAir Canada

Deal found 12/13

$186

vie. 1/169:40 amYYZ - LAS

2 stops11h 59mWestJet

jue. 1/228:00 amLAS - YYZ

2 stops12h 38mWestJet

Deal found 12/13

$172

mar. 1/201:30 pmYYZ - LAS

1 stop11h 01mWestJet

mié. 1/281:10 pmLAS - YYZ

2 stops14h 03mWestJet

Deal found 12/15

$174

mié. 1/2112:30 pmYYZ - LAS

1 stop9h 09mWestJet

sáb. 1/249:15 pmLAS - YYZ

2 stops23h 54mWestJet

Deal found 12/13

$171

jue. 1/228:00 pmYYZ - LAS

Nonstop5h 09mWestJet

jue. 5/78:00 amLAS - YYZ

1 stop9h 52mWestJet

Deal found 12/14

$169

jue. 1/2212:30 pmYYZ - LAS

1 stop9h 09mWestJet

mar. 1/278:00 amLAS - YYZ

2 stops12h 39mWestJet

Deal found 12/13

$173

vie. 1/239:40 amYYZ - LAS

2 stops11h 59mWestJet

lun. 1/2611:25 pmLAS - YYZ

Nonstop4h 22mWestJet

Deal found 12/15

$166

vie. 1/2312:30 pmYYZ - LAS

1 stop9h 09mWestJet

mar. 5/512:35 pmLAS - YYZ

Nonstop4h 23mWestJet

Deal found 12/14

$168

sáb. 1/247:55 pmYYZ - LAS

Nonstop5h 07mMultiple Airlines

jue. 1/2911:25 pmLAS - YYZ

Nonstop4h 22mMultiple Airlines

Deal found 12/14

$170

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 diciembre 15, 2025.

vie. 1/169:40 amYYZ - LAS

2 stops11h 59mWestJet

Deal found 12/13

$109

mar. 3/178:25 pmYYZ - LAS

Nonstop5h 06mAir Canada

Deal found 12/15

$110

dom. 5/2412:00 pmYYZ - LAS

1 stop10h 37mWestJet

Deal found 12/15

$111

vie. 5/1512:00 pmYYZ - LAS

1 stop10h 37mWestJet

Deal found 12/15

$112

vie. 1/161:00 pmYYZ - LAS

1 stop10h 39mAir Canada

Deal found 12/13

$113

mié. 1/1410:15 pmYYZ - LAS

1 stop25h 00mWestJet

Deal found 12/15

$114

dom. 3/81:30 pmYYZ - LAS

1 stop11h 03mWestJet

Deal found 12/15

$116

dom. 3/87:55 pmYYZ - LAS

Nonstop5h 07mAir Transat

Deal found 12/15

$117

sáb. 3/147:55 pmYYZ - LAS

Nonstop5h 07mPorter Airlines

Deal found 12/13

$118

lun. 5/48:00 amYYZ - LAS

2 stops14h 37mWestJet

Deal found 12/14

$119

vie. 2/2710:15 pmYYZ - LAS

1 stop25h 01mWestJet

Deal found 12/15

$120

jue. 1/296:45 amYUL - LAS

2 stops14h 26mWestJet

Deal found 12/14

$125

Find flight deals from Ontario to California

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$165 (oojo)
One-way from	$109 (Kiwi.com)
Popular in	December
Cheapest in	May
Average price	$423
Good round-trip deal	$235 or less
Good one-way deal	$135 or less

Provider with most accurate pricing for Toronto (YTO)-Los Angeles flight deals.

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Provider most trusted by Cheapflights users for Toronto (YTO)-Los Angeles flights.

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From Ontario to California

Search Deals

One-way flight from Ontario to California

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($39 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

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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

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

mar. 1/6

2:57 pm-9:51 pm

1 stop9h 54m

Las Vegas Harry Reid Intl

lun. 1/12

6:00 am-4:52 pm

1 stop7h 52m

$201

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mié. 1/14

2:45 pm-9:59 pm

2 stops10h 14m

Las Vegas Harry Reid Intl

sáb. 1/17

6:00 am-4:52 pm

1 stop7h 52m

$201

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

sáb. 1/17

7:30 am-6:29 pm

2 stops13h 59m

Las Vegas Harry Reid Intl

sáb. 1/17

11:18 pm-11:48 am

1 stop9h 30m

$201

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

dom. 1/18

6:10 am-9:59 pm

1 stop18h 49m

Las Vegas Harry Reid Intl

jue. 1/22

6:00 am-4:52 pm

1 stop7h 52m

$201

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mar. 1/13

12:45 pm-8:32 pm

2 stops10h 47m

Las Vegas Harry Reid Intl

sáb. 1/17

11:53 am-11:46 pm

2 stops8h 53m

$201

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mar. 3/3

2:45 pm-8:22 pm

1 stop8h 37m

Las Vegas Harry Reid Intl

vie. 3/6

11:59 pm-9:58 am

1 stop6h 59m

$205

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

mar. 3/10

4:10 pm-11:12 am

2 stops22h 02m

Las Vegas Harry Reid Intl

dom. 3/15

11:59 pm-7:45 pm

1 stop16h 46m

$205

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

jue. 3/12

9:00 pm-8:13 am

1 stop14h 13m

Las Vegas Harry Reid Intl

sáb. 3/28

10:43 pm-9:19 am

1 stop7h 36m

$205

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

jue. 2/19

10:00 am-8:22 pm

1 stop13h 22m

Las Vegas Harry Reid Intl

mar. 2/24

5:20 am-3:02 pm

1 stop6h 42m

$205

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

jue. 1/15

10:30 am-8:39 pm

1 stop13h 09m

Las Vegas Harry Reid Intl

mar. 1/20

9:00 am-9:35 pm

1 stop9h 35m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

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, August is the cheapest month in which you can book a flight from Region of Ontario to California (average of $80). Flying from Region of Ontario to California in March is currently the most expensive (average of $189). 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 fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 17% versus a flight in the afternoon.

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

Travelers seeking maximum savings on their Region of Ontario to California flight should consider departing on Sunday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Region of Ontario to California

The most flights from CAON to USCA are scheduled on a Friday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost to fly round-trip from Region of Ontario to California?

Reviews of airlines servicing California

Read through reviews of airlines operating flights from Ontario to California, such as Porter Airlines, Delta, and United Airlines. 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.

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Porter Airlines

8.0

Very good

399 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Delta

7.9

Good

8,008 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

United Airlines

7.4

Good

9,092 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

WestJet

7.2

Good

3,202 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Air Canada

7.1

Good

10,525 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

How long is the flight from Region of Ontario to California?
Airlines like United Airlines, Air Canada, and Delta fly from Region of Ontario to California in about 9h 54m. The time it takes to get you to your destination can typically vary by up to 3h 15m. There are 1938 mi between Region of Ontario and California. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from Region of Ontario to California one-way?
The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $102. However, be on the lookout for offers from Porter Airlines and Air Canada, as they are both options that can get you from Region of Ontario to California for a low price.
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, August is the cheapest month in which you can book a flight from Region of Ontario to California (average of $80). Flying from Region of Ontario to California in March is currently the most expensive (average of $189). 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

Top 7 airlines flying from Ontario to California

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	Cheapest$115	Average$334	FlexibilityNo cancel fee	On-time52%
WestJet	Cheapest$118	Average$273	FlexibilityNo cancel fee	On-time60%
Air Canada	Cheapest$167	Average$430	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$171	Average$430	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$176	Average$426	FlexibilityNo cancel fee	On-timeN/A
Air Transat	Cheapest$182	Average$392	FlexibilityNo cancel fee	On-time50%
American Airlines	Cheapest$199	Average$483	FlexibilityNo cancel fee	On-time71%

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$109+ Cheap flights from Ontario to California

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap 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 diciembre 15, 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 diciembre 15, 2025.

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 diciembre 15, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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Use the filters below to find and compare flights from Ontario to California that are best for you.

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 diciembre 15, 2025.

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 December 16, 2024.

Weekly flight availability from Region of Ontario to California

How much does it cost to fly round-trip from Region of Ontario to California?

Reviews of airlines servicing California

Read through reviews of airlines operating flights from Ontario to California, such as Porter Airlines, Delta, and United Airlines. 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.

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?

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 7 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 diciembre 15, 2025.