What is the cheapest airline that flies from California to Ontario?

United Airlines, Delta, and Air Canada are the most popular carriers operating from California to Ontario

How many flights depart from California to Region of Ontario on average per day?

As of April 2026, 49 flights take off from California and land in Region of Ontario each day. The most common flight departure time for this route is 1:00PM, with 54% of daily flights taking off in the afternoon.

How many flights depart from California to Region of Ontario on average per week?

343 flights are operational weekly from California to Region of Ontario as of April 2026. The most popular departure day for this route is Wed, with 16% of flights per week taking off on this day.

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

Average flight duration from California to Region of Ontario depends on which airport you fly into and out of. Flying from Los Angeles to Toronto Pearson Intl Airport is 4h 30m on average, while flying from San Diego to Toronto Pearson Intl Airport is 4h 55m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

What airlines fly to Region of Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from California according to our data. Air Canada is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 8 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from California to Ontario are updated daily.

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

The number of operators available for flights from California to Ontario is 8 as of April 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Ontario 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 Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$134 Cheap Flights from California to Ontario in 2026

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Find the cheapest flights from California to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:50 am - 11:55 pm

LAX

YYZ

9h 05m

1 stop

7:00 am - 6:30 pm

YYZ

LAX

14h 30m

2 stops

$288WestJet

Thu, Apr 23 - Sun, Apr 26

11:50 am - 11:55 pm

LAX

YYZ

9h 05m

1 stop

10:50 am - 5:10 pm

YYZ

LAX

9h 20m

1 stop

$289WestJet

Thu, Apr 23 - Sun, Apr 26

1:20 pm - 9:25 pm

SFO

YYZ

5h 05mnonstop

9:45 am - 12:23 pm

YYZ

SFO

5h 38mnonstop

$326Porter Airlines

Tue, May 12 - Tue, May 19

8:15 am - 9:32 pm

LAX

YTZ

10h 17m

1 stop

12:30 pm - 7:59 pm

YTZ

LAX

10h 29m

1 stop

$332Air Canada

Wed, May 6 - Thu, May 7

10:30 pm - 11:47 am

LAX

YTZ

10h 17m

1 stop

10:20 am - 9:29 pm

YTZ

LAX

14h 09m

2 stops

$335Air Canada

Tue, May 12 - Tue, May 19

1:45 pm - 12:35 am

SFO

YUL

7h 50m

1 stop

6:45 am - 12:45 pm

YUL

SFO

9h 00m

1 stop

$375Porter Airlines

Thu, Apr 16 - Sat, Apr 25

2:46 pm - 1:42 pm

SJC

YYZ

19h 56m

2 stops

4:18 pm - 9:32 pm

YYZ

SJC

8h 14m

1 stop

$383United Airlines

Tue, May 5 - Wed, May 6

2:09 pm - 9:54 am

SJC

YYZ

16h 45m

1 stop

12:45 pm - 9:10 pm

YYZ

SJC

11h 25m

2 stops

$392United Airlines

Tue, Sep 1 - Wed, Sep 2

11:00 pm - 10:19 am

SJC

YYZ

8h 19m

1 stop

6:30 am - 3:08 pm

YYZ

SJC

11h 38m

2 stops

$393Delta

Mon, Apr 13 - Tue, Apr 21

11:00 pm - 10:19 am

SJC

YYZ

8h 19m

1 stop

12:22 pm - 8:37 pm

YYZ

SJC

11h 15m

1 stop

$398Delta

Tue, Apr 14 - Fri, Apr 17

Delta flights from California to Region of Ontario

Our best Delta deals on California to Region of Ontario flight tickets

Delta

Apr 13

SJC11:00 pmSan Jose

8h 19m

1 stop

YYZ10:19 amToronto Pearson Intl

Apr 21

YYZ1:30 pmToronto Pearson Intl

11h 15m

1 stop

SJC9:45 pmSan Jose

$393

Delta

Apr 14

SJC11:00 pmSan Jose

8h 19m

1 stop

YYZ10:19 amToronto Pearson Intl

Apr 17

YYZ12:22 pmToronto Pearson Intl

11h 15m

1 stop

SJC8:37 pmSan Jose

$398

Delta

Aug 26

SJC12:45 pmSan Jose

8h 19m

1 stop

YYZ12:04 amToronto Pearson Intl

Sep 8

YYZ1:30 pmToronto Pearson Intl

12h 11m

1 stop

SJC10:41 pmSan Jose

$406

Porter Airlines flights from California to Region of Ontario

Our best Porter Airlines deals on California to Region of Ontario flight tickets

Porter Airlines

May 29

LAX1:00 pmLos Angeles

4h 50m

YYZ8:50 pmToronto Pearson Intl

Jun 14

YYZ9:40 amToronto Pearson Intl

5h 15m

LAX11:55 amLos Angeles

$319

Porter Airlines

May 7

LAX1:00 pmLos Angeles

4h 50m

YYZ8:50 pmToronto Pearson Intl

May 10

YYZ9:40 amToronto Pearson Intl

5h 20m

LAX12:00 pmLos Angeles

$322

Porter Airlines

May 12

SFO1:20 pmSan Francisco

5h 05m

YYZ9:25 pmToronto Pearson Intl

May 19

YYZ9:45 amToronto Pearson Intl

5h 38m

SFO12:23 pmSan Francisco

$326

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Thu 4/23

11:50 am-11:55 pm

1 stop9h 05m

Toronto Pearson Intl

Sun 4/26

7:00 am-6:30 pm

2 stops14h 30m

$288

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Thu 4/23

11:50 am-11:55 pm

1 stop9h 05m

Toronto Pearson Intl

Sun 4/26

10:50 am-5:10 pm

1 stop9h 20m

$289

Quickest round-trip

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 5/12

1:20 pm-9:25 pm

Nonstop5h 05m

Toronto Pearson Intl

Tue 5/19

9:45 am-12:23 pm

Nonstop5h 38m

$326

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles

Wed 5/6

8:15 am-9:32 pm

1 stop10h 17m

Toronto Island

Thu 5/7

12:30 pm-7:59 pm

1 stop10h 29m

$332

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles

Tue 5/12

10:30 pm-11:47 am

1 stop10h 17m

Toronto Island

Tue 5/19

10:20 am-9:29 pm

2 stops14h 09m

$335

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Thu 4/16

1:45 pm-12:35 am

1 stop7h 50m

Montreal Pierre Elliott Trudeau Intl

Sat 4/25

6:45 am-12:45 pm

1 stop9h 00m

$375

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 5/5

2:46 pm-1:42 pm

2 stops19h 56m

Toronto Pearson Intl

Wed 5/6

4:18 pm-9:32 pm

1 stop8h 14m

$383

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 9/1

2:09 pm-9:54 am

1 stop16h 45m

Toronto Pearson Intl

Wed 9/2

12:45 pm-9:10 pm

2 stops11h 25m

$392

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 4/13

11:00 pm-10:19 am

1 stop8h 19m

Toronto Pearson Intl

Tue 4/21

6:30 am-3:08 pm

2 stops11h 38m

$393

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 4/14

11:00 pm-10:19 am

1 stop8h 19m

Toronto Pearson Intl

Fri 4/17

12:22 pm-8:37 pm

1 stop11h 15m

$398

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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

The month of June is, on average, the cheapest month to fly to Region of Ontario from California, with most prices found around $286. If you aren’t able to travel during the month of June, then book flights to Region of Ontario from California during May instead. Flights to Region of Ontario in May, while not as cheap as those in June, still average around $288.

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

According to our data, Wednesday is the cheapest day to fly to Region of Ontario from California. The lowest ticket price found for a Wednesday departure recently was $395. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from California to Region of Ontario on a Sunday will generally be more expensive and average around $603. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Region of Ontario is at noon. momondo users have found flights departing from California to Region of Ontario at noon for as low as $318. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $603.

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 to Region of 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 $351 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 $187 on momondo.

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

There are 4 cabin classes available to choose from on California to 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 30% 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	$209
Fastest flight time	4h 15m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from California in the past 72 hours is $209. The best round-trip flight deal from California to Region of Ontario found on momondo in the last 72 hours is $267.

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 123 airports in Region of Ontario. From California there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

When did momondo last update prices for flights from California to Ontario?
Prices for flights from California to Ontario are updated daily.
How many operators does momondo search for flights from California to Ontario?
The number of operators available for flights from California to Ontario is 8 as of April 2026.
How old do you have to be to fly from California to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Ontario 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 Ontario. 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 California to Region of Ontario?
momondo data reveals that the most frequently booked plane model on the route from California to Region of Ontario is Embraer 195 E2, representing 43.07% of all bookings. The subsequent popular models are Airbus A220-300 at 13.94%, Airbus A321-100/200 at 13.03%, and Boeing 737 MAX 8 at 11.46%.

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
WestJet	PriceFrom $99	Free Cancellation	Rating 7.2 3,309 reviews	Search WestJet flights
Porter Airlines	PriceFrom $102	Free Cancellation	Rating 8.0 430 reviews	Search Porter Airlines flights
Air Transat	PriceFrom $114	Free Cancellation	Rating 7.7 530 reviews	Search Air Transat flights
Air Canada	PriceFrom $122	Free Cancellation	Rating 7.1 10,877 reviews	Search Air Canada flights
Delta	PriceFrom $130	Free Cancellation	Rating 7.9 8,366 reviews	Search Delta flights
United Airlines	PriceFrom $130	Free Cancellation	Rating 7.4 9,534 reviews	Search United Airlines flights
American Airlines	PriceFrom $256	Free Cancellation	Rating 7.1 11,545 reviews	Search American Airlines flights
Qatar Airways	PriceFrom $293	Free Cancellation	Rating 7.4 3,732 reviews	Search Qatar Airways flights

Why use momondo?

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

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

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

Yes. All flights to Ontario from California on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Ontario from California. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of California to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Region of Ontario trip

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Popular cities in Ontario

Flights to Torontofrom $151

Flights to Vancouverfrom $148

Flights to Montrealfrom $209

Flights to Calgaryfrom $212

Flights to Ottawafrom $254

Flights to Halifaxfrom $281

Flights to Winnipegfrom $269

Flights to Québec Cityfrom $282

Flights to Kelownafrom $244

Flights to Saskatoonfrom $280

Flights to St. John'sfrom $394

Flights to Reginafrom $261

Cheap flights from California to Ontario from $134

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 6/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from California to Region of Ontario

Our best Delta deals on California to Region of Ontario flight tickets

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Our best Porter Airlines deals on California to Region of Ontario flight tickets

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

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

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

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

What is the cheapest California to Ontario flight route?

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

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

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

What is the cheapest airline that flies from California to Ontario?

What airlines fly to Region of Ontario?

How many flights depart from California to Region of Ontario on average per day?

How many flights depart from California to Region of Ontario on average per week?

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

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

Fastest flight time

Direct flights

Airports in 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

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular cities in Ontario

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

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According to popular flight searches on momondo this year

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