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

The number of flights available between California and Region of Ontario is 71 per day as of August 2026. The most frequent departure time is 8:00a.m., with 43% of daily flights leaving in the afternoon.

Which 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 travelling to Region of Ontario. Keep in mind that there are 7 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?

The number of flights available between California and Region of Ontario is 498 per week as of August 2026. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.

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

The flight from California to Region of Ontario depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Los Angeles (a popular airport in California) to Toronto Pearson Intl Airport (the most popular airport in Region of Ontario), then the flight time is 4h 40m on average. If you fly from San Francisco (another popular airport in California) to Toronto Pearson Intl Airport, then the average flight time is 4h 49m.

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

WestJet, Delta, and United Airlines 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 refresh 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 7 as of August 2026.

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.

C$ 208 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.

2:35 p.m. - 9:50 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

11:30 a.m. - 1:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 416Porter Airlines

Wed, 2 Dec - Sun, 6 Dec

10:30 p.m. - 11:50 a.m.LAX Los Angeles Los Angeles-YTZ Toronto Island

10h 20m1 stop Montreal Pierre Elliott Trudeau Intl

12:30 p.m. - 7:54 p.m.YTZ Toronto Island-LAX Los Angeles Los Angeles

10h 24m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 420Air Canada

Tue, 13 Oct - Sat, 17 Oct

11:35 p.m. - 6:50 a.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

8:30 p.m. - 10:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 424Air Transat

Thu, 19 Nov - Mon, 23 Nov

9:40 a.m. - 8:40 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

8h 00m1 stop Edmonton

8:30 p.m. - 10:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 424Porter Airlines

Wed, 2 Dec - Sun, 6 Dec

11:35 p.m. - 6:50 a.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

8:30 p.m. - 10:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 428Air Transat

Thu, 19 Nov - Mon, 23 Nov

1:45 p.m. - 1:05 a.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

8h 20m1 stop Calgary

12:40 p.m. - 6:30 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

8h 50m1 stop Winnipeg

C$ 442WestJet

Thu, 10 Sep - Mon, 14 Sep

4:40 p.m. - 11:59 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 19mdirect

1:30 p.m. - 9:40 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

11h 10m1 stop Calgary

C$ 447Multiple Airlines

Sat, 3 Oct - Sat, 10 Oct

6:05 p.m. - 6:55 a.m.SFO San Francisco-YYZ Toronto Pearson Intl

9h 50m1 stop Calgary

3:50 p.m. - 9:55 p.m.YYZ Toronto Pearson Intl-SFO San Francisco

9h 05m1 stop Calgary

C$ 454WestJet

Wed, 9 Sep - Tue, 15 Sep

6:00 a.m. - 7:35 p.m.SFO San Francisco-YYZ Toronto Pearson Intl

10h 35m2 stops Calgary Ottawa

9:45 a.m. - 12:15 p.m.YYZ Toronto Pearson Intl-SFO San Francisco

5h 30mdirect

C$ 458Multiple Airlines

Sat, 12 Sep - Sun, 20 Sep

10:40 a.m. - 6:27 p.m.LAX Los Angeles Los Angeles-YYZ Toronto Pearson Intl

4h 47mdirect

4:40 p.m. - 7:00 p.m.YYZ Toronto Pearson Intl-LAX Los Angeles Los Angeles

5h 20mdirect

C$ 482Air Canada

Sat, 5 Sep - Tue, 8 Sep

Cheap last-minute flights

Enter your travel dates to find the best prices.

6:25 a.m. - 12:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

51h 30m2 stops Phoenix Sky Harbor Intl Calgary

8:00 a.m. - 2:10 p.m.YYZ Toronto Pearson Intl-SAN San Diego

9h 10m1 stop Calgary

C$ 622Multiple Airlines

Tue, 25 Aug - Fri, 11 Sep

6:25 a.m. - 1:05 a.m.SAN San Diego-YYZ Toronto Pearson Intl

39h 40m2 stops Phoenix Sky Harbor Intl Calgary

7:00 a.m. - 2:10 p.m.YYZ Toronto Pearson Intl-SAN San Diego

10h 10m1 stop Calgary

C$ 632Multiple Airlines

Fri, 28 Aug - Wed, 9 Sep

8:30 a.m. - 9:15 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

9h 45m1 stop Calgary

8:00 a.m. - 9:40 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

16h 40m2 stops Winnipeg Calgary

C$ 852WestJet

Thu, 27 Aug - Sat, 29 Aug

1:45 p.m. - 5:10 a.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

12h 25m2 stops Calgary Edmonton

8:00 a.m. - 9:40 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

16h 40m2 stops Winnipeg Calgary

C$ 863WestJet

Thu, 27 Aug - Sat, 29 Aug

12:41 a.m. - 2:33 p.m.LAX Los Angeles Los Angeles-YYZ Toronto Pearson Intl

10h 52m1 stop Chicago O'Hare Intl

6:30 a.m. - 10:52 a.m.YYZ Toronto Pearson Intl-LAX Los Angeles Los Angeles

7h 22m1 stop Chicago O'Hare Intl

C$ 981American Airlines

Wed, 26 Aug - Wed, 16 Sep

6:15 a.m. - 5:24 p.m.SAN San Diego-YYZ Toronto Pearson Intl

8h 09m1 stop Detroit Metropolitan Wayne County

6:10 a.m. - 11:34 p.m.YYZ Toronto Pearson Intl-SAN San Diego

20h 24m1 stop New York John F Kennedy Intl

C$ 1,003Delta

Mon, 24 Aug - Fri, 11 Sep

6:15 a.m. - 9:59 p.m.SAN San Diego-YYZ Toronto Pearson Intl

12h 44m1 stop Atlanta Hartsfield-Jackson

6:10 a.m. - 11:34 p.m.YYZ Toronto Pearson Intl-SAN San Diego

20h 24m1 stop New York John F Kennedy Intl

C$ 1,003Delta

Mon, 24 Aug - Wed, 9 Sep

8:27 a.m. - 11:29 p.m.LAX Los Angeles Los Angeles-YYZ Toronto Pearson Intl

12h 02m1 stop Chicago O'Hare Intl

1:15 p.m. - 5:44 p.m.YYZ Toronto Pearson Intl-LAX Los Angeles Los Angeles

7h 29m1 stop Chicago O'Hare Intl

C$ 1,010American Airlines

Wed, 26 Aug - Tue, 1 Sep

7:00 a.m. - 5:30 p.m.ONT Ontario-YUL Montreal Pierre Elliott Trudeau Intl

7h 30m1 stop Chicago O'Hare Intl

4:55 p.m. - 10:59 p.m.YUL Montreal Pierre Elliott Trudeau Intl-ONT Ontario

9h 04m1 stop Chicago O'Hare Intl

C$ 1,016United Airlines

Wed, 26 Aug - Wed, 9 Sep

7:00 a.m. - 9:26 p.m.ONT Ontario-YUL Montreal Pierre Elliott Trudeau Intl

11h 26m1 stop Chicago O'Hare Intl

4:55 p.m. - 10:35 p.m.YUL Montreal Pierre Elliott Trudeau Intl-ONT Ontario

8h 40m1 stop Chicago O'Hare Intl

C$ 1,016United Airlines

Wed, 26 Aug - Sat, 5 Sep

Cheap direct flights

Enter your travel dates to find the best prices.

2:35 p.m. - 9:50 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

11:30 a.m. - 1:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 416Porter Airlines

Wed, 2 Dec - Sun, 6 Dec

11:35 p.m. - 6:50 a.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

8:30 p.m. - 10:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 424Air Transat

Thu, 19 Nov - Mon, 23 Nov

4:40 p.m. - 11:59 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 19mdirect

1:50 p.m. - 3:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

4h 47mdirect

C$ 427Porter Airlines

Sat, 3 Oct - Sat, 10 Oct

11:35 p.m. - 6:50 a.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

8:30 p.m. - 10:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 428Air Transat

Thu, 19 Nov - Mon, 23 Nov

2:35 p.m. - 9:50 p.m.LAS Las Vegas Harry Reid Intl-YYZ Toronto Pearson Intl

4h 15mdirect

8:30 p.m. - 10:37 p.m.YYZ Toronto Pearson Intl-LAS Las Vegas Harry Reid Intl

5h 07mdirect

C$ 458Multiple Airlines

Wed, 2 Dec - Sun, 6 Dec

2:15 p.m. - 10:00 p.m.LAX Los Angeles Los Angeles-YYZ Toronto Pearson Intl

4h 45mdirect

7:25 a.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LAX Los Angeles Los Angeles

5h 20mdirect

C$ 465Multiple Airlines

Fri, 11 Sep - Thu, 17 Sep

10:40 a.m. - 6:27 p.m.LAX Los Angeles Los Angeles-YYZ Toronto Pearson Intl

4h 47mdirect

4:40 p.m. - 7:00 p.m.YYZ Toronto Pearson Intl-LAX Los Angeles Los Angeles

5h 20mdirect

C$ 482Air Canada

Sat, 5 Sep - Tue, 8 Sep

10:40 a.m. - 6:27 p.m.LAX Los Angeles Los Angeles-YYZ Toronto Pearson Intl

4h 47mdirect

7:25 a.m. - 9:45 a.m.YYZ Toronto Pearson Intl-LAX Los Angeles Los Angeles

5h 20mdirect

C$ 486Air Canada

Thu, 17 Sep - Mon, 28 Sep

8:10 a.m. - 4:14 p.m.SFO San Francisco-YYZ Toronto Pearson Intl

5h 04mdirect

6:30 a.m. - 9:08 a.m.YYZ Toronto Pearson Intl-SFO San Francisco

5h 38mdirect

C$ 604United Airlines

Wed, 30 Sep - Sun, 4 Oct

8:10 a.m. - 4:14 p.m.SFO San Francisco-YYZ Toronto Pearson Intl

5h 04mdirect

6:30 a.m. - 9:08 a.m.YYZ Toronto Pearson Intl-SFO San Francisco

5h 38mdirect

C$ 604United Airlines

Tue, 15 Sep - Tue, 29 Sep

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Porter Airlines flights from California to Region of Ontario

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

Porter Airlines

2 Dec

LAS2:35 p.m.Las Vegas Harry Reid Intl

4h 15m

YYZ9:50 p.m.Toronto Pearson Intl

6 Dec

YYZ11:30 a.m.Toronto Pearson Intl

5h 07m

LAS1:37 p.m.Las Vegas Harry Reid Intl

C$ 416

Porter Airlines

3 Oct

LAS4:40 p.m.Las Vegas Harry Reid Intl

4h 19m

YYZ11:59 p.m.Toronto Pearson Intl

10 Oct

YYZ1:50 p.m.Toronto Pearson Intl

4h 47m

LAS3:37 p.m.Las Vegas Harry Reid Intl

C$ 427

Porter Airlines

18 Nov

LAS2:35 p.m.Las Vegas Harry Reid Intl

4h 15m

YYZ9:50 p.m.Toronto Pearson Intl

24 Nov

YYZ11:30 a.m.Toronto Pearson Intl

5h 07m

LAS1:37 p.m.Las Vegas Harry Reid Intl

C$ 434

United Airlines flights from California to Region of Ontario

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

United Airlines

15 Sep

SFO10:35 p.m.San Francisco

10h 06m

2 stops

YTZ11:41 a.m.Toronto Island

16 Sep

YTZ3:15 p.m.Toronto Island

12h 44m

1 stop

SFO12:59 a.m.San Francisco

C$ 681

United Airlines

15 Sep

SFO12:05 p.m.San Francisco

20h 36m

2 stops

YTZ11:41 a.m.Toronto Island

16 Sep

YTZ3:15 p.m.Toronto Island

19h 26m

2 stops

SFO7:41 a.m.San Francisco

C$ 688

United Airlines

15 Sep

SFO12:05 p.m.San Francisco

20h 36m

2 stops

YTZ11:41 a.m.Toronto Island

16 Sep

YTZ3:15 p.m.Toronto Island

19h 26m

2 stops

SFO7:41 a.m.San Francisco

C$ 690

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Las VegasToronto

LAS Las Vegas Harry Reid Intl - YYZ Toronto Pearson Intl

LASYYZ

Las Vegas Harry Reid Intl

Wed 2/12

2:35 p.m.-9:50 p.m.

Nonstop4h 15m

Toronto Pearson Intl

Sun 6/12

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

Nonstop5h 07m

C$ 416

Los AngelesToronto

LAX Los Angeles Los Angeles - YTZ Toronto Island

LAXYTZ

Los Angeles Los Angeles

Tue 13/10

10:30 p.m.-11:50 a.m.

1 stop10h 20m

Toronto Island

Sat 17/10

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

1 stop10h 24m

C$ 420

Las VegasToronto

LAS Las Vegas Harry Reid Intl - YYZ Toronto Pearson Intl

LASYYZ

Las Vegas Harry Reid Intl

Thu 19/11

11:35 p.m.-6:50 a.m.

Nonstop4h 15m

Toronto Pearson Intl

Mon 23/11

8:30 p.m.-10:37 p.m.

Nonstop5h 07m

C$ 424

Las VegasToronto

LAS Las Vegas Harry Reid Intl - YYZ Toronto Pearson Intl

LASYYZ

Las Vegas Harry Reid Intl

Wed 2/12

9:40 a.m.-8:40 p.m.

1 stop8h 00m

Toronto Pearson Intl

Sun 6/12

8:30 p.m.-10:37 p.m.

Nonstop5h 07m

C$ 424

Las VegasToronto

LAS Las Vegas Harry Reid Intl - YYZ Toronto Pearson Intl

LASYYZ

Las Vegas Harry Reid Intl

Thu 19/11

11:35 p.m.-6:50 a.m.

Nonstop4h 15m

Toronto Pearson Intl

Mon 23/11

8:30 p.m.-10:37 p.m.

Nonstop5h 07m

C$ 428

Las VegasToronto

LAS Las Vegas Harry Reid Intl - YYZ Toronto Pearson Intl

LASYYZ

Las Vegas Harry Reid Intl

Thu 10/9

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

1 stop8h 20m

Toronto Pearson Intl

Mon 14/9

12:40 p.m.-6:30 p.m.

1 stop8h 50m

C$ 442

Las VegasToronto

LAS Las Vegas Harry Reid Intl - YYZ Toronto Pearson Intl

LASYYZ

Las Vegas Harry Reid Intl

Sat 3/10

4:40 p.m.-11:59 p.m.

Nonstop4h 19m

Toronto Pearson Intl

Sat 10/10

1:30 p.m.-9:40 p.m.

1 stop11h 10m

C$ 447

San FranciscoToronto

SFO San Francisco - YYZ Toronto Pearson Intl

SFOYYZ

San Francisco

Wed 9/9

6:05 p.m.-6:55 a.m.

1 stop9h 50m

Toronto Pearson Intl

Tue 15/9

3:50 p.m.-9:55 p.m.

1 stop9h 05m

C$ 454

San FranciscoToronto

SFO San Francisco - YYZ Toronto Pearson Intl

SFOYYZ

San Francisco

Sat 12/9

6:00 a.m.-7:35 p.m.

2 stops10h 35m

Toronto Pearson Intl

Sun 20/9

9:45 a.m.-12:15 p.m.

Nonstop5h 30m

C$ 458

Los AngelesToronto

LAX Los Angeles Los Angeles - YYZ Toronto Pearson Intl

LAXYYZ

Los Angeles Los Angeles

Sat 5/9

10:40 a.m.-6:27 p.m.

Nonstop4h 47m

Toronto Pearson Intl

Tue 8/9

4:40 p.m.-7:00 p.m.

Nonstop5h 20m

C$ 482

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?

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$ 544. If you are unable to visit Region of Ontario during the month of February, then departing from California during the month January is also very affordable. Most momondo users find prices during this month for around C$ 546.

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$ 545. The most expensive day to fly to Region of Ontario is Tuesday, with ticket prices averaging around C$ 632.

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$ 420. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 666 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$ 625 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$ 562 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 16% 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$ 208
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$ 208. The best round-trip flight deal from California to Region of Ontario found on momondo in the last 72 hours is C$ 416.

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?
The number of operators available for flights from California to Ontario is 7 as of August 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from California to Region of Ontario is Embraer 195 E2 (42.67% of total bookings). The next most popular plane models are Airbus A320-100/200 (15.32%), Airbus A321-100/200 (7.56%), and Boeing 737 MAX 9 (6.96%).

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 C$ 219	Free Cancellation	Rating 7.2 3,437 reviews	Search WestJet flights
American Airlines	PriceFrom C$ 259	Free Cancellation	Rating 7.1 11,983 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 292	Free Cancellation	Rating 7.1 11,519 reviews	Search Air Canada flights
Porter Airlines	PriceFrom C$ 303	Free Cancellation	Rating 8.0 457 reviews	Search Porter Airlines flights
Delta	PriceFrom C$ 329	Free Cancellation	Rating 7.8 8,513 reviews	Search Delta flights
United Airlines	PriceFrom C$ 443	Free Cancellation	Rating 7.4 10,113 reviews	Search United Airlines flights
Air Transat	PriceFrom C$ 490	Free Cancellation	Rating 7.8 574 reviews	Search Air Transat 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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Popular cities

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Complete your trip

Feeling lucky

Popular Cities in Ontario

Flights to Torontofrom C$ 124

Flights to Vancouverfrom C$ 77

Flights to Montrealfrom C$ 222

Flights to Calgaryfrom C$ 122

Flights to Halifaxfrom C$ 162

Flights to Winnipegfrom C$ 127

Flights to Ottawafrom C$ 169

Flights to Kelownafrom C$ 89

Flights to Saskatoonfrom C$ 164

Flights to Reginafrom C$ 157

Flights to St. John'sfrom C$ 281

Flights to Québec Cityfrom C$ 310

Cheap flights from California to Ontario from C$ 208

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 6/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from California to Ontario

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

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Porter Airlines flights from California to Region of Ontario

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

United Airlines flights from California to Region of Ontario

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

momondo Fare Finder

Use the filters below to find and compare flights from California to Ontario that are best for you.

See travel insights to Ontario from

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?

Which 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

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

Region of Ontario flight routes

According to popular flight searches on momondo this year

Fly your favourite airline to Ontario

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Ontario

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