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 48% 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.

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

As of May 2026, 59 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 47% of daily flights taking off at noon.

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

415 flights are operational weekly from California to Region of Ontario as of May 2026. The most popular departure day for this route is Wed, with 15% 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 40m on average, while flying from San Diego to Toronto Pearson Intl Airport is 4h 51m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

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

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

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 May 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.

$141 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.

6:00 am - 9:10 pm

SFO

YYZ

12h 10m

2 stops

3:50 pm - 9:55 pm

YYZ

SFO

9h 05m

1 stop

$303WestJet

Sun, Jul 19 - Wed, Jul 22

6:00 am - 9:10 pm

SFO

YYZ

12h 10m

2 stops

6:00 am - 12:00 pm

YYZ

SFO

9h 00m

1 stop

$304WestJet

Sun, Aug 16 - Wed, Aug 26

6:00 am - 9:10 pm

SFO

YYZ

12h 10m

2 stops

6:00 am - 12:00 pm

YYZ

SFO

9h 00m

1 stop

$307WestJet

Sun, Jul 19 - Thu, Aug 13

6:00 am - 9:10 pm

SFO

YYZ

12h 10m

2 stops

3:50 pm - 9:55 pm

YYZ

SFO

9h 05m

1 stop

$308WestJet

Sun, Jul 5 - Tue, Jul 14

1:22 pm - 6:39 am

SAN

YYZ

14h 17m

1 stop

8:00 am - 2:10 pm

YYZ

SAN

9h 10m

1 stop

$341Multiple Airlines

Thu, Sep 17 - Tue, Sep 22

10:27 pm - 8:05 pm

LAX

YYZ

18h 38m

2 stops

9:55 am - 3:52 pm

YYZ

LAX

8h 57m

1 stop

$343Multiple Airlines

Wed, Sep 9 - Tue, Sep 29

10:30 pm - 10:07 am

LAX

YTZ

8h 37m

1 stop

12:30 pm - 7:59 pm

YTZ

LAX

10h 29m

1 stop

$345Air Canada

Sat, May 30 - Sat, Jun 6

10:30 pm - 10:38 am

LAX

YYZ

9h 08m

1 stop

6:35 pm - 9:00 pm

YYZ

LAX

5h 25mnonstop

$347Air Canada

Sat, May 30 - Sat, Jun 6

11:30 pm - 10:06 am

SFO

YTZ

7h 36m

1 stop

12:15 pm - 5:19 pm

YTZ

SFO

8h 04m

1 stop

$527United Airlines

Mon, Jun 1 - Thu, Jun 4

12:50 am - 2:46 pm

SFO

YTZ

10h 56m

2 stops

2:55 pm - 8:37 pm

YTZ

SFO

8h 42m

1 stop

$532United Airlines

Thu, May 28 - Sat, Jun 6

Frontier flights from California to Region of Ontario

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

Frontier

Jun 2

LAX8:27 pmLos Angeles

18h 29m

2 stops

YYZ5:56 pmToronto Pearson Intl

Jun 4

YYZ10:45 amToronto Pearson Intl

11h 55m

1 stop

LAX7:40 pmLos Angeles

$401

Frontier

May 29

ONT5:00 amOntario

13h 32m

1 stop

YYZ9:32 pmToronto Pearson Intl

Jun 4

YYZ8:45 amToronto Pearson Intl

13h 47m

2 stops

ONT7:32 pmOntario

$461

Frontier

May 21

LAX9:30 amLos Angeles

11h 28m

1 stop

YYZ11:58 pmToronto Pearson Intl

Jun 24

YYZ2:30 pmToronto Pearson Intl

21h 55m

2 stops

LAX9:25 amLos Angeles

$554

American Airlines flights from California to Region of Ontario

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

American Airlines

May 28

SFO6:01 amSan Francisco

8h 20m

1 stop

YYZ5:21 pmToronto Pearson Intl

Jun 1

YYZ4:17 pmToronto Pearson Intl

12h 01m

1 stop

SFO1:18 amSan Francisco

$445

American Airlines

May 26

SFO6:01 amSan Francisco

12h 40m

1 stop

YYZ9:41 pmToronto Pearson Intl

Jun 3

YYZ4:17 pmToronto Pearson Intl

9h 46m

1 stop

SFO11:03 pmSan Francisco

$463

American Airlines

May 29

ONT11:59 pmOntario

10h 58m

1 stop

YYZ1:57 pmToronto Pearson Intl

Jun 2

YYZ2:55 pmToronto Pearson Intl

10h 43m

1 stop

ONT10:38 pmOntario

$496

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 7/19

6:00 am-9:10 pm

2 stops12h 10m

Toronto Pearson Intl

Wed 7/22

3:50 pm-9:55 pm

1 stop9h 05m

$303

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 8/16

6:00 am-9:10 pm

2 stops12h 10m

Toronto Pearson Intl

Wed 8/26

6:00 am-12:00 pm

1 stop9h 00m

$304

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 7/19

6:00 am-9:10 pm

2 stops12h 10m

Toronto Pearson Intl

Thu 8/13

6:00 am-12:00 pm

1 stop9h 00m

$307

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 7/5

6:00 am-9:10 pm

2 stops12h 10m

Toronto Pearson Intl

Tue 7/14

3:50 pm-9:55 pm

1 stop9h 05m

$308

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Thu 9/17

1:22 pm-6:39 am

1 stop14h 17m

Toronto Pearson Intl

Tue 9/22

8:00 am-2:10 pm

1 stop9h 10m

$341

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 9/9

10:27 pm-8:05 pm

2 stops18h 38m

Toronto Pearson Intl

Tue 9/29

9:55 am-3:52 pm

1 stop8h 57m

$343

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles

Sat 5/30

10:30 pm-10:07 am

1 stop8h 37m

Toronto Island

Sat 6/6

12:30 pm-7:59 pm

1 stop10h 29m

$345

Quickest round-trip

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sat 5/30

10:30 pm-10:38 am

1 stop9h 08m

Toronto Pearson Intl

Sat 6/6

6:35 pm-9:00 pm

Nonstop5h 25m

$347

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Mon 6/1

11:30 pm-10:06 am

1 stop7h 36m

Toronto Island

Thu 6/4

12:15 pm-5:19 pm

1 stop8h 04m

$527

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Thu 5/28

12:50 am-2:46 pm

2 stops10h 56m

Toronto Island

Sat 6/6

2:55 pm-8:37 pm

1 stop8h 42m

$532

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

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Other information

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

The month of September is, on average, the cheapest month to fly to Region of Ontario from California, with most prices found around $359. If you aren’t able to travel during the month of September, then book flights to Region of Ontario from California during February instead. Flights to Region of Ontario in February, while not as cheap as those in September, still average around $365.

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 $431. 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 $636. 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 $352. 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 $623.

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 $391 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 $311 on momondo.

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

You could potentially save up to 11% 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	$218
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 $218. The best round-trip flight deal from California to Region of Ontario found on momondo in the last 72 hours is $476.

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 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 May 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 38.26% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 15.82%, Airbus A220-300 at 12.37%, and Airbus A321-100/200 at 8.53%.

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 $101	Free Cancellation	Rating 7.2 3,335 reviews	Search WestJet flights
Air Transat	PriceFrom $114	Free Cancellation	Rating 7.8 552 reviews	Search Air Transat flights
Porter Airlines	PriceFrom $114	Free Cancellation	Rating 8.0 439 reviews	Search Porter Airlines flights
Air Canada	PriceFrom $122	Free Cancellation	Rating 7.1 11,042 reviews	Search Air Canada flights
Delta	PriceFrom $131	Free Cancellation	Rating 7.9 8,453 reviews	Search Delta flights
United Airlines	PriceFrom $153	Free Cancellation	Rating 7.4 9,717 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $293	Free Cancellation	Rating 7.4 3,727 reviews	Search Qatar Airways flights
American Airlines	PriceFrom $306	Free Cancellation	Rating 7.1 11,662 reviews	Search American Airlines 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 $152

Flights to Vancouverfrom $158

Flights to Montrealfrom $141

Flights to Calgaryfrom $217

Flights to Ottawafrom $242

Flights to Halifaxfrom $256

Flights to Winnipegfrom $287

Flights to Québec Cityfrom $407

Flights to Saskatoonfrom $273

Flights to Kelownafrom $257

Flights to St. John'sfrom $363

Flights to Reginafrom $350

Cheap flights from California to Ontario from $149

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 7/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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 from California to Ontario?

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

Frequently asked questions about flying from California to 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

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

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