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Cheap flights from Ontario to California from $111

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to California departing on 3/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
8:00 pm - 10:12 pm
YYZ
-
LAS
5h 12mnonstop
WestJet Logo
8:05 am - 11:35 pm
LAS
-
YYZ
12h 30m
2 stops
$157WestJet
Sun, Mar 29 - Wed, Apr 1
WestJet Logo
8:00 pm - 10:12 pm
YYZ
-
LAS
5h 12mnonstop
WestJet Logo
11:25 pm - 6:43 am
LAS
-
YYZ
4h 18mnonstop
$158WestJet
Fri, Mar 27 - Fri, Apr 3
WestJet Logo
8:00 pm - 10:12 pm
YYZ
-
LAS
5h 12mnonstop
WestJet Logo
11:25 pm - 6:43 am
LAS
-
YYZ
4h 18mnonstop
$159WestJet
Mon, Mar 23 - Fri, Mar 27
WestJet Logo
8:00 pm - 10:12 pm
YYZ
-
LAS
5h 12mnonstop
WestJet Logo
11:25 pm - 6:43 am
LAS
-
YYZ
4h 18mnonstop
$160WestJet
Mon, Mar 23 - Mon, Mar 30
Air Canada Logo
10:25 am - 8:39 pm
YTZ
-
LAS
13h 14m
2 stops
Air Canada Logo
9:00 am - 9:35 pm
LAS
-
YTZ
9h 35m
1 stop
$239Air Canada
Wed, Feb 18 - Fri, Feb 20
Multiple Airlines Logo
8:00 pm - 1:11 pm
YYZ
-
ONT
20h 11m
1 stop
Multiple Airlines Logo
3:28 pm - 6:43 am
ONT
-
YYZ
12h 15m
1 stop
$259Multiple Airlines
Fri, Feb 27 - Mon, Mar 2
Air Canada Logo
8:30 pm - 10:35 am
YTZ
-
LAS
17h 05m
1 stop
Air Canada Logo
11:30 am - 7:52 am
LAS
-
YTZ
17h 22m
1 stop
$262Air Canada
Tue, May 26 - Thu, May 28
Multiple Airlines Logo
8:35 pm - 1:26 pm
YYZ
-
ONT
19h 51m
1 stop
Multiple Airlines Logo
3:24 pm - 6:20 am
ONT
-
YYZ
11h 56m
1 stop
$262Multiple Airlines
Thu, Feb 19 - Sun, Feb 22
Porter Airlines Logo
9:50 am - 12:45 pm
YYZ
-
SFO
5h 55mnonstop
Porter Airlines Logo
1:45 pm - 9:42 pm
SFO
-
YYZ
4h 57mnonstop
$275Porter Airlines
Tue, Apr 7 - Sun, Apr 12
Porter Airlines Logo
9:50 am - 12:45 pm
YYZ
-
SFO
5h 55mnonstop
Porter Airlines Logo
1:45 pm - 9:42 pm
SFO
-
YYZ
4h 57mnonstop
$282Porter Airlines
Sat, Apr 4 - Sat, Apr 11

American Airlines flights from Region of Ontario to California

Our best American Airlines deals on Region of Ontario to California flight tickets
American Airlines
Feb 21
YYZ6:17 pmToronto Pearson Intl
9h 08m
1 stop
LAS12:25 amLas Vegas Harry Reid Intl
Feb 26
LAS6:00 amLas Vegas Harry Reid Intl
7h 03m
1 stop
YYZ4:03 pmToronto Pearson Intl
$219
American Airlines
Feb 18
YYZ11:53 amToronto Pearson Intl
13h 22m
1 stop
LAS10:15 pmLas Vegas Harry Reid Intl
Feb 25
LAS11:59 pmLas Vegas Harry Reid Intl
8h 14m
1 stop
YYZ11:13 amToronto Pearson Intl
$220
American Airlines
Feb 17
YYZ6:17 pmToronto Pearson Intl
7h 41m
1 stop
LAS10:58 pmLas Vegas Harry Reid Intl
Feb 24
LAS5:44 amLas Vegas Harry Reid Intl
7h 35m
1 stop
YYZ4:19 pmToronto Pearson Intl
$231

United Airlines flights from Region of Ontario to California

Our best United Airlines deals on Region of Ontario to California flight tickets
United Airlines
Feb 22
YYZ3:45 pmToronto Pearson Intl
10h 46m
1 stop
LAS11:31 pmLas Vegas Harry Reid Intl
Mar 2
LAS7:06 pmLas Vegas Harry Reid Intl
15h 55m
1 stop
YYZ2:01 pmToronto Pearson Intl
$239
United Airlines
Feb 20
YYZ7:30 amToronto Pearson Intl
9h 30m
1 stop
LAS2:00 pmLas Vegas Harry Reid Intl
Mar 2
LAS7:06 pmLas Vegas Harry Reid Intl
15h 55m
1 stop
YYZ2:01 pmToronto Pearson Intl
$244
United Airlines
Feb 18
YYZ6:30 amToronto Pearson Intl
18h 58m
1 stop
LAS10:28 pmLas Vegas Harry Reid Intl
Feb 18
LAS12:59 amLas Vegas Harry Reid Intl
10h 21m
1 stop
YYZ2:20 pmToronto Pearson Intl
$246

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to California 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, momondo users made 832,500 searches. Data last updated February 8, 2026.
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

Sun 3/29

8:00 pm-10:12 pm

Nonstop5h 12m

Las Vegas Harry Reid Intl

Wed 4/1

8:05 am-11:35 pm

2 stops12h 30m

$157

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Fri 3/27

8:00 pm-10:12 pm

Nonstop5h 12m

Las Vegas Harry Reid Intl

Fri 4/3

11:25 pm-6:43 am

Nonstop4h 18m

$158

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Mon 3/23

8:00 pm-10:12 pm

Nonstop5h 12m

Las Vegas Harry Reid Intl

Fri 3/27

11:25 pm-6:43 am

Nonstop4h 18m

$159

TorontoLas Vegas

YYZ - LAS

YYZLAS

Toronto Pearson Intl

Mon 3/23

8:00 pm-10:12 pm

Nonstop5h 12m

Las Vegas Harry Reid Intl

Mon 3/30

11:25 pm-6:43 am

Nonstop4h 18m

$160

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Wed 2/18

10:25 am-8:39 pm

2 stops13h 14m

Las Vegas Harry Reid Intl

Fri 2/20

9:00 am-9:35 pm

1 stop9h 35m

$239

TorontoOntario

YYZ - ONT

YYZONT

Toronto Pearson Intl

Fri 2/27

8:00 pm-1:11 pm

1 stop20h 11m

Ontario

Mon 3/2

3:28 pm-6:43 am

1 stop12h 15m

$259

TorontoLas Vegas

YTZ - LAS

YTZLAS

Toronto Island

Tue 5/26

8:30 pm-10:35 am

1 stop17h 05m

Las Vegas Harry Reid Intl

Thu 5/28

11:30 am-7:52 am

1 stop17h 22m

$262

TorontoOntario

YYZ - ONT

YYZONT

Toronto Pearson Intl

Thu 2/19

8:35 pm-1:26 pm

1 stop19h 51m

Ontario

Sun 2/22

3:24 pm-6:20 am

1 stop11h 56m

$262

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

Tue 4/7

9:50 am-12:45 pm

Nonstop5h 55m

San Francisco

Sun 4/12

1:45 pm-9:42 pm

Nonstop4h 57m

$275

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

Sat 4/4

9:50 am-12:45 pm

Nonstop5h 55m

San Francisco

Sat 4/11

1:45 pm-9:42 pm

Nonstop4h 57m

$282

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to California from

How to get the cheapest flight ticket from Region of Ontario to California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to California?

The month of September is another great option to travel to California, with average flight prices from Region of Ontario averaging around $242.

What is the cheapest day to depart on your flight to California?

The cheapest day to depart from Region of Ontario to California is on a Friday. Travelers who choose to depart for California on a Friday will often find tickets for as low as $280. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to California on Sunday is $351.

What is the cheapest time of day to depart on your flight to California?

The cheapest time of day to fly to California is in the evening when flights can be purchased for as low as $217. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $393 on average. Flights to California from Region of Ontario at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Ontario to California flight route?

Fly from Toronto Pearson Intl to Los Angeles for the best Ontario - California flight prices

How far in advance should I book a flight to California?

You are more likely to see cheaper flights to California from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to California for around $292 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to California from Region of Ontario for as low as $244 on momondo.

What cabin class options are available on Ontario to California flights?

There are 4 cabin classes available to choose from on Ontario to California flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to California flights?

You could potentially save up to 12% on your flight if you consider stops on a Region of Ontario to California flight.

Cheap Region of Ontario to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to California

Best Price Found

$187

Fastest flight time

4h 47m

Direct flights

Every day

Airports in California

418 airports
The best one-way flight to California from Region of Ontario in the past 72 hours is $187. The best round-trip flight deal from Region of Ontario to California found on momondo in the last 72 hours is $225.
The fastest flight from Region of Ontario to California takes 4h 47m
Direct flights go from Region of Ontario to California every day.
There are 418 airports in California. From Region of Ontario there are direct flights to Los Angeles (LAX), Las Vegas Harry Reid Intl (LAS).
Search flight deals

  • When did momondo last update prices for flights from Ontario to California?

    Prices for flights from Ontario to California are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to California?

  • How old do you have to be to fly from Ontario to California?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to California.

  • What documentation or ID do you need to fly to California?

    The required travel and health documents for your California trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at California. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Region of Ontario to California?

Best airlines flying from Region of Ontario to California

Compare and see reviews for airlines that fly from Region of Ontario to California with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $102Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights
WestJetPriceFrom $111Free CancellationRating
7.2
3,255 reviews
Search WestJet flights
Porter AirlinesPriceFrom $132Free CancellationRating
7.9
412 reviews
Search Porter Airlines flights
United AirlinesPriceFrom $139Free CancellationRating
7.4
9,254 reviews
Search United Airlines flights
Air TransatPriceFrom $152Free CancellationRating
7.7
504 reviews
Search Air Transat flights
DeltaPriceFrom $162Free CancellationRating
7.9
8,172 reviews
Search Delta flights
American AirlinesPriceFrom $228Free CancellationRating
7.2
11,249 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to California?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to California. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to California with flexible booking policies on momondo?

momondo does allow users to show only those flights to California from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to California?

Once you have performed a search for Ontario to California flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to California right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to California from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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