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

Delta, Air Canada, and WestJet 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 July 2026, 65 flights take off from California and land in Region of Ontario each day. The most common flight departure time for this route is 4:00PM, with 44% of daily flights taking off in the afternoon.

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 week?

458 flights are operational weekly from California to Region of Ontario as of July 2026. The most popular departure day for this route is Mon, 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 30m on average, while flying from San Francisco to Toronto Pearson Intl Airport is 4h 54m on average. Toronto Pearson Intl Airport is the most popular airport in Region of 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 July 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.

$181 Cheap Flights from California to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

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.

1:00 pm - 12:10 am

SFO

YYZ

8h 10m

1 stop

3:50 pm - 9:55 pm

YYZ

SFO

9h 05m

1 stop

$297WestJet

Tue, Aug 11 - Tue, Aug 18

1:00 pm - 5:10 am

SFO

YYZ

13h 10m

2 stops

6:00 am - 12:00 pm

YYZ

SFO

9h 00m

1 stop

$298WestJet

Thu, Aug 6 - Tue, Sep 1

6:00 am - 7:00 pm

SFO

YYZ

10h 00m

2 stops

2:50 pm - 9:55 pm

YYZ

SFO

10h 05m

1 stop

$299WestJet

Wed, Aug 19 - Sat, Aug 22

1:00 pm - 12:10 am

SFO

YYZ

8h 10m

1 stop

12:40 pm - 9:55 pm

YYZ

SFO

12h 15m

2 stops

$300WestJet

Sun, Aug 16 - Tue, Aug 25

10:27 pm - 8:05 pm

LAX

YYZ

18h 38m

2 stops

2:50 pm - 10:05 pm

YYZ

LAX

10h 15m

1 stop

$335Multiple Airlines

Wed, Sep 9 - Fri, Sep 25

10:27 pm - 8:05 pm

LAX

YYZ

18h 38m

2 stops

8:35 pm - 10:52 am

YYZ

LAX

17h 17m

1 stop

$338Multiple Airlines

Wed, Sep 9 - Fri, Sep 18

10:30 pm - 1:15 pm

LAX

YTZ

11h 45m

2 stops

12:30 pm - 7:54 pm

YTZ

LAX

10h 24m

1 stop

$398Air Canada

Tue, Aug 4 - Tue, Aug 25

10:30 pm - 11:51 am

LAX

YTZ

10h 21m

1 stop

12:30 pm - 7:54 pm

YTZ

LAX

10h 24m

1 stop

$402Air Canada

Tue, Aug 4 - Tue, Aug 25

2:20 pm - 12:37 am

LAX

YUL

7h 17m

1 stop

6:45 am - 1:20 pm

YUL

LAX

9h 35m

1 stop

$435Porter Airlines

Sun, Oct 11 - Tue, Oct 20

1:20 pm - 12:37 am

SFO

YUL

8h 17m

1 stop

6:45 am - 12:20 pm

YUL

SFO

8h 35m

1 stop

$481Porter Airlines

Tue, Aug 25 - Tue, Sep 1

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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

Aug 13

SFO1:00 pmSan Francisco

8h 10m

1 stop

YYZ12:10 amToronto Pearson Intl

Aug 20

YYZ2:50 pmToronto Pearson Intl

10h 05m

1 stop

SFO9:55 pmSan Francisco

$295

WestJet

Aug 11

SFO1:00 pmSan Francisco

8h 10m

1 stop

YYZ12:10 amToronto Pearson Intl

Aug 18

YYZ3:50 pmToronto Pearson Intl

9h 05m

1 stop

SFO9:55 pmSan Francisco

$297

WestJet

Aug 13

SFO6:00 amSan Francisco

12h 10m

2 stops

YYZ9:10 pmToronto Pearson Intl

Aug 20

YYZ2:50 pmToronto Pearson Intl

10h 05m

1 stop

SFO9:55 pmSan Francisco

$298

Air Canada flights from California to Region of Ontario

Our best Air Canada deals on California to Region of Ontario flight tickets

Air Canada

Aug 4

LAX10:30 pmLos Angeles

11h 45m

2 stops

YTZ1:15 pmToronto Island

Aug 25

YTZ12:30 pmToronto Island

10h 24m

1 stop

LAX7:54 pmLos Angeles

$398

Air Canada

Aug 4

LAX10:30 pmLos Angeles

10h 21m

1 stop

YTZ11:51 amToronto Island

Aug 25

YTZ12:30 pmToronto Island

10h 24m

1 stop

LAX7:54 pmLos Angeles

$402

Air Canada

Aug 4

LAX10:30 pmLos Angeles

8h 36m

1 stop

YTZ10:06 amToronto Island

Aug 21

YTZ12:30 pmToronto Island

10h 24m

1 stop

LAX7:54 pmLos Angeles

$404

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 8/11

1:00 pm-12:10 am

1 stop8h 10m

Toronto Pearson Intl

Tue 8/18

3:50 pm-9:55 pm

1 stop9h 05m

$297

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 8/6

1:00 pm-5:10 am

2 stops13h 10m

Toronto Pearson Intl

Tue 9/1

6:00 am-12:00 pm

1 stop9h 00m

$298

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Wed 8/19

6:00 am-7:00 pm

2 stops10h 00m

Toronto Pearson Intl

Sat 8/22

2:50 pm-9:55 pm

1 stop10h 05m

$299

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 8/16

1:00 pm-12:10 am

1 stop8h 10m

Toronto Pearson Intl

Tue 8/25

12:40 pm-9:55 pm

2 stops12h 15m

$300

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 9/9

10:27 pm-8:05 pm

2 stops18h 38m

Toronto Pearson Intl

Fri 9/25

2:50 pm-10:05 pm

1 stop10h 15m

$335

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 9/9

10:27 pm-8:05 pm

2 stops18h 38m

Toronto Pearson Intl

Fri 9/18

8:35 pm-10:52 am

1 stop17h 17m

$338

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles

Tue 8/4

10:30 pm-1:15 pm

2 stops11h 45m

Toronto Island

Tue 8/25

12:30 pm-7:54 pm

1 stop10h 24m

$398

Los AngelesToronto

LAX - YTZ

LAXYTZ

Los Angeles

Tue 8/4

10:30 pm-11:51 am

1 stop10h 21m

Toronto Island

Tue 8/25

12:30 pm-7:54 pm

1 stop10h 24m

$402

Quickest round-trip

Los AngelesMontreal

LAX - YUL

LAXYUL

Los Angeles

Sun 10/11

2:20 pm-12:37 am

1 stop7h 17m

Montreal Pierre Elliott Trudeau Intl

Tue 10/20

6:45 am-1:20 pm

1 stop9h 35m

$435

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Tue 8/25

1:20 pm-12:37 am

1 stop8h 17m

Montreal Pierre Elliott Trudeau Intl

Tue 9/1

6:45 am-12:20 pm

1 stop8h 35m

$481

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 February is, on average, the cheapest month to fly to Region of Ontario from California, with most prices found around $360. If you aren’t able to travel during the month of February, then book flights to Region of Ontario from California during September instead. Flights to Region of Ontario in September, while not as cheap as those in February, still average around $366.

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

According to our data, Thursday is the cheapest day to fly to Region of Ontario from California. The lowest ticket price found for a Thursday departure recently was $506. 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 $696. 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 $406. 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 $656.

What is the cheapest California to Ontario flight route?

Fly from Los Angeles 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 $422 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 $343 on momondo.

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

There are 4 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 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	$267
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 $267. The best round-trip flight deal from California to Region of Ontario found on momondo in the last 72 hours is $519.

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 July 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 35.58% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 10.70%, Airbus A220-300 at 9.42%, and Airbus A320-100/200 at 8.98%.

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 $108	Free Cancellation	Rating 7.2 3,390 reviews	Search WestJet flights
Delta	PriceFrom $136	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta flights
Porter Airlines	PriceFrom $142	Free Cancellation	Rating 8.0 441 reviews	Search Porter Airlines flights
Air Transat	PriceFrom $150	Free Cancellation	Rating 7.8 559 reviews	Search Air Transat flights
United Airlines	PriceFrom $153	Free Cancellation	Rating 7.4 9,906 reviews	Search United Airlines flights
Air Canada	PriceFrom $167	Free Cancellation	Rating 7.1 11,279 reviews	Search Air Canada flights
Qatar Airways	PriceFrom $293	Free Cancellation	Rating 7.3 3,738 reviews	Search Qatar Airways flights
American Airlines	PriceFrom $346	Free Cancellation	Rating 7.1 11,766 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 $172

Flights to Vancouverfrom $122

Flights to Montrealfrom $227

Flights to Calgaryfrom $232

Flights to Ottawafrom $226

Flights to Halifaxfrom $249

Flights to Winnipegfrom $317

Flights to Québec Cityfrom $328

Flights to Kelownafrom $219

Flights to Saskatoonfrom $321

Flights to St. John'sfrom $401

Flights to Reginafrom $363

Cheap flights from California to Ontario from $181

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 8/5. 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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WestJet flights from California to Region of Ontario

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

Air Canada flights from California to Region of Ontario

Our best Air Canada 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 from California to Ontario?

What cabin class options are available on California to Region of 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

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

Popular cities in Ontario

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

California flight routes

According to popular flight searches on momondo this year

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