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Cheap flights from California to Ontario from C$ 220

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Ontario departing on 23/7. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
1:45 p.m. - 5:10 a.m.
LAS
-
YYZ
12h 25m
2 stops
WestJet Logo
7:00 a.m. - 12:55 p.m.
YYZ
-
LAS
8h 55m
1 stop
C$ 354WestJet
Fri, 11 Sep - Tue, 15 Sep
WestJet Logo
1:45 p.m. - 1:05 a.m.
LAS
-
YYZ
8h 20m
1 stop
WestJet Logo
12:40 p.m. - 9:40 p.m.
YYZ
-
LAS
12h 00m
2 stops
C$ 361WestJet
Wed, 23 Sep - Sun, 27 Sep
WestJet Logo
8:30 a.m. - 8:05 p.m.
LAS
-
YYZ
8h 35m
1 stop
WestJet Logo
10:00 a.m. - 5:15 p.m.
YYZ
-
LAS
10h 15m
1 stop
C$ 363WestJet
Sun, 20 Sep - Sat, 3 Oct
WestJet Logo
8:30 a.m. - 8:05 p.m.
LAS
-
YYZ
8h 35m
1 stop
WestJet Logo
7:00 a.m. - 12:55 p.m.
YYZ
-
LAS
8h 55m
1 stop
C$ 364WestJet
Sun, 20 Sep - Mon, 28 Sep
Multiple Airlines Logo
11:20 a.m. - 4:58 a.m.
LAS
-
YYZ
14h 38m
2 stops
Multiple Airlines Logo
11:30 a.m. - 1:37 p.m.
YYZ
-
LAS
5h 07mdirect
C$ 368Multiple Airlines
Thu, 12 Nov - Tue, 17 Nov
Multiple Airlines Logo
11:20 p.m. - 6:39 a.m.
LAS
-
YYZ
4h 19mdirect
Multiple Airlines Logo
8:00 a.m. - 5:15 p.m.
YYZ
-
LAS
12h 15m
2 stops
C$ 370Multiple Airlines
Thu, 15 Oct - Tue, 20 Oct
Air Canada Logo
10:30 p.m. - 1:15 p.m.
LAX
-
YTZ
11h 45m
2 stops
Air Canada Logo
12:30 p.m. - 7:54 p.m.
YTZ
-
LAX
10h 24m
1 stop
C$ 566Air Canada
Tue, 4 Aug - Tue, 25 Aug
Air Canada Logo
10:30 p.m. - 11:51 a.m.
LAX
-
YTZ
10h 21m
1 stop
Air Canada Logo
12:30 p.m. - 7:54 p.m.
YTZ
-
LAX
10h 24m
1 stop
C$ 572Air Canada
Tue, 4 Aug - Tue, 25 Aug
Porter Airlines Logo
2:20 p.m. - 12:37 a.m.
LAX
-
YUL
7h 17m
1 stop
Porter Airlines Logo
6:45 a.m. - 1:20 p.m.
YUL
-
LAX
9h 35m
1 stop
C$ 618Porter Airlines
Sun, 11 Oct - Tue, 20 Oct
Porter Airlines Logo
1:20 p.m. - 12:37 a.m.
SFO
-
YUL
8h 17m
1 stop
Porter Airlines Logo
6:45 a.m. - 12:20 p.m.
YUL
-
SFO
8h 35m
1 stop
C$ 684Porter Airlines
Tue, 25 Aug - Tue, 1 Sep

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WestJet flights from California to Region of Ontario

Our best WestJet deals on California to Region of Ontario flight tickets
WestJet
11 Sep
LAS1:45 p.m.Las Vegas Harry Reid Intl
12h 25m
2 stops
YYZ5:10 a.m.Toronto Pearson Intl
15 Sep
YYZ7:00 a.m.Toronto Pearson Intl
8h 55m
1 stop
LAS12:55 p.m.Las Vegas Harry Reid Intl
C$ 354
WestJet
23 Sep
LAS1:45 p.m.Las Vegas Harry Reid Intl
8h 20m
1 stop
YYZ1:05 a.m.Toronto Pearson Intl
27 Sep
YYZ12:40 p.m.Toronto Pearson Intl
12h 00m
2 stops
LAS9:40 p.m.Las Vegas Harry Reid Intl
C$ 361
WestJet
20 Sep
LAS6:10 p.m.Las Vegas Harry Reid Intl
8h 35m
1 stop
YYZ5:45 a.m.Toronto Pearson Intl
1 Oct
YYZ10:00 a.m.Toronto Pearson Intl
8h 30m
1 stop
LAS3:30 p.m.Las Vegas Harry Reid Intl
C$ 363

Porter Airlines flights from California to Region of Ontario

Our best Porter Airlines deals on California to Region of Ontario flight tickets
Porter Airlines
11 Jul
LAS11:20 p.m.Las Vegas Harry Reid Intl
4h 19m
YYZ6:39 a.m.Toronto Pearson Intl
18 Jul
YYZ8:35 p.m.Toronto Pearson Intl
4h 47m
LAS10:22 p.m.Las Vegas Harry Reid Intl
C$ 461
Porter Airlines
11 Jul
LAS11:20 p.m.Las Vegas Harry Reid Intl
4h 19m
YYZ6:39 a.m.Toronto Pearson Intl
18 Jul
YYZ8:35 p.m.Toronto Pearson Intl
4h 47m
LAS10:22 p.m.Las Vegas Harry Reid Intl
C$ 465
Porter Airlines
11 Sep
SFO1:20 p.m.San Francisco
5h 05m
YYZ9:25 p.m.Toronto Pearson Intl
15 Sep
YYZ9:45 a.m.Toronto Pearson Intl
5h 35m
SFO12:20 p.m.San Francisco
C$ 472

momondo Fare Finder

 
Customize your flight search to find flights from California to Region of 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, momondo users made 96,600 searches. Data last updated 1 July 2026.
Use the filters below to find and compare flights from California to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Fri 11/9

1:45 p.m.-5:10 a.m.

2 stops12h 25m

Toronto Pearson Intl

Tue 15/9

7:00 a.m.-12:55 p.m.

1 stop8h 55m

C$ 354

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Wed 23/9

1:45 p.m.-1:05 a.m.

1 stop8h 20m

Toronto Pearson Intl

Sun 27/9

12:40 p.m.-9:40 p.m.

2 stops12h 00m

C$ 361

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Sun 20/9

8:30 a.m.-8:05 p.m.

1 stop8h 35m

Toronto Pearson Intl

Sat 3/10

10:00 a.m.-5:15 p.m.

1 stop10h 15m

C$ 363

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Sun 20/9

8:30 a.m.-8:05 p.m.

1 stop8h 35m

Toronto Pearson Intl

Mon 28/9

7:00 a.m.-12:55 p.m.

1 stop8h 55m

C$ 364

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Thu 12/11

11:20 a.m.-4:58 a.m.

2 stops14h 38m

Toronto Pearson Intl

Tue 17/11

11:30 a.m.-1:37 p.m.

Nonstop5h 07m

C$ 368
Quickest round-trip

Las VegasToronto

LAS - YYZ

LASYYZ

Las Vegas Harry Reid Intl

Thu 15/10

11:20 p.m.-6:39 a.m.

Nonstop4h 19m

Toronto Pearson Intl

Tue 20/10

8:00 a.m.-5:15 p.m.

2 stops12h 15m

C$ 370

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles Los Angeles

Tue 4/8

10:30 p.m.-1:15 p.m.

2 stops11h 45m

Toronto Island

Tue 25/8

12:30 p.m.-7:54 p.m.

1 stop10h 24m

C$ 566

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles Los Angeles

Tue 4/8

10:30 p.m.-11:51 a.m.

1 stop10h 21m

Toronto Island

Tue 25/8

12:30 p.m.-7:54 p.m.

1 stop10h 24m

C$ 572

Los AngelesMontreal

LAX - YUL

LAXYUL

Los Angeles Los Angeles

Sun 11/10

2:20 p.m.-12:37 a.m.

1 stop7h 17m

Montreal Pierre Elliott Trudeau Intl

Tue 20/10

6:45 a.m.-1:20 p.m.

1 stop9h 35m

C$ 618

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Tue 25/8

1:20 p.m.-12:37 a.m.

1 stop8h 17m

Montreal Pierre Elliott Trudeau Intl

Tue 1/9

6:45 a.m.-12:20 p.m.

1 stop8h 35m

C$ 684

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 Ontario from

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

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 Region of Ontario?

In general, February is the cheapest month to fly from California to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 512. If you are unable to visit Region of Ontario during the month of February, then departing from California during the month September is also very affordable. Most momondo users find prices during this month for around C$ 520.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from California to Region of Ontario is on a Saturday. Travellers who choose to depart for Region of Ontario on a Saturday will often find tickets for as low as C$ 436. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 565.

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

Our most recent data shows that the best time of day to fly to Region of Ontario is in the evening. Flights from California to Region of Ontario during this time can be as low as C$ 281. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 645 on average. Flights to Region of Ontario from California in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest California to Ontario flight route?

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

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

You are more likely to see cheaper flights to Region of Ontario from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 600 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from California for as low as C$ 488 on momondo.

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

There are 3 cabin classes available to choose from on California to Region of Ontario 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 California to Region of Ontario flights?

You could potentially save up to 32% on your flight if you consider stops on a California to Region of Ontario flight.

Cheap California to Region of Ontario flight deals and tips

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

Best price found

C$ 282

Fastest flight time

4h 15m

Direct flights

Every day

Airports in Region of Ontario

125 airports
The best one-way flight to Region of Ontario from California in the past 72 hours is C$ 282. The best round-trip flight deal from California to Region of Ontario found on momondo in the last 72 hours is C$ 260.
The fastest flight from California to Region of Ontario takes 4h 15m
Direct flights go from California to Region of Ontario every day.
There are 125 airports in Region of Ontario. From California there are direct flights to Toronto Pearson Intl (YYZ).
Search flight deals

Frequently asked questions about flying from California to Ontario

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

    Prices for flights from California to Ontario refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Ontario.

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

    The travel and health documents you'll need for your trip to Ontario may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from California to Region of Ontario

Compare and see reviews for airlines that fly from California to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom C$ 164Free CancellationRating
7.2
3,393 reviews
Search WestJet flights
Porter AirlinesPriceFrom C$ 202Free CancellationRating
8.0
441 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 269Free CancellationRating
7.1
11,282 reviews
Search Air Canada flights
Air TransatPriceFrom C$ 309Free CancellationRating
7.8
560 reviews
Search Air Transat flights
United AirlinesPriceFrom C$ 490Free CancellationRating
7.4
9,909 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find California to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Yes. momondo allows you to filter the results for California to Ontario flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between California and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from California and alert you when they change.

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Ontario

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Popular flights according to clicks in the last 7 days on momondo
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