Which airlines fly to Region of Ontario?

Porter Airlines, Air Canada and Air Transat are the top three most popular airlines that fly to Region of Ontario from San Francisco according to our data. Porter Airlines is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 6 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 San Francisco to Region of Ontario on average per week?

The number of flights available between San Francisco and Region of Ontario is 202 per week as of October 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

What is the cheapest airline that flies from San Francisco to Ontario?

WestJet, American Airlines, and Air Canada are the most popular carriers operating from San Francisco to Ontario

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

As of October 2025, 28 flights take off from San Francisco and land in Region of Ontario each day. The most common flight departure time for this route is 8:00a.m., with 52% of daily flights taking off in the afternoon.

When did momondo last update prices for flights from San Francisco Airport to Ontario?

Prices for flights from San Francisco Airport to Ontario are refreshed on a daily basis.

How many operators does momondo search for flights from San Francisco Airport to Ontario?

As of October 2025, there are 5 operators available to choose from for flights from San Francisco Airport to Ontario.

How old do you have to be to fly from San Francisco Airport 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 San Francisco Airport to Ontario.

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

The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 138 Cheap Flights from San Francisco to Ontario in 2025/26

1 adult

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 a.m. - 6:58 a.m.SFO-YYZ

17h 43m2 stops

9:45 a.m. - 12:40 p.m.YYZ-SFO

5h 55mdirect

C$ 333Multiple Airlines

Find Deal

Thu, 11 Dec - Mon, 15 Dec

10:15 a.m. - 6:13 a.m.SFO-YYZ

16h 58m3 stops

9:45 a.m. - 12:40 p.m.YYZ-SFO

5h 55mdirect

C$ 338Multiple Airlines

Find Deal

Tue, 28 Oct - Wed, 29 Oct

1:00 p.m. - 5:28 a.m.SFO-YKF

13h 28m1 stop

6:20 a.m. - 12:12 p.m.YKF-SFO

8h 52m1 stop

C$ 343WestJet

Find Deal

Fri, 16 Jan - Thu, 22 Jan

1:40 p.m. - 9:37 p.m.SFO-YYZ

4h 57mdirect

9:45 a.m. - 12:40 p.m.YYZ-SFO

5h 55mdirect

C$ 360Porter Airlines

Find Deal

Thu, 6 Nov - Sat, 31 Jan

1:40 p.m. - 9:37 p.m.SFO-YYZ

4h 57mdirect

9:45 a.m. - 12:40 p.m.YYZ-SFO

5h 55mdirect

C$ 361Porter Airlines

Find Deal

Thu, 6 Nov - Mon, 10 Nov

1:00 p.m. - 5:28 a.m.SFO-YKF

13h 28m1 stop

6:20 a.m. - 12:12 p.m.YKF-SFO

8h 52m1 stop

C$ 364WestJet

Find Deal

Fri, 7 Nov - Thu, 13 Nov

8:25 a.m. - 7:55 p.m.SFO-YTZ

8h 30m1 stop

3:30 p.m. - 9:22 p.m.YTZ-SFO

8h 52m1 stop

C$ 430Air Canada

Find Deal

Sat, 8 Nov - Sat, 15 Nov

8:25 a.m. - 9:35 p.m.SFO-YTZ

10h 10m1 stop

3:30 p.m. - 9:22 p.m.YTZ-SFO

8h 52m1 stop

C$ 486Air Canada

Find Deal

Fri, 5 Dec - Sun, 7 Dec

11:55 p.m. - 1:28 p.m.SFO-YUL

10h 33m1 stop

4:45 p.m. - 9:45 a.m.YUL-SFO

20h 00m2 stops

C$ 522United Airlines

Find Deal

Mon, 10 Nov - Tue, 11 Nov

8:49 a.m. - 9:21 p.m.SFO-YXU

9h 32m1 stop

5:15 a.m. - 10:54 a.m.YXU-SFO

8h 39m1 stop

C$ 526United Airlines

Find Deal

Mon, 12 Jan - Tue, 20 Jan

Porter Airlines flights from San Francisco to Region of Ontario

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

Porter Airlines

6 Nov

SFO1:40 p.m.San Francisco

4h 57m

YYZ9:37 p.m.Toronto Pearson Intl

31 Jan

YYZ9:45 a.m.Toronto Pearson Intl

5h 55m

SFO12:40 p.m.San Francisco

C$ 360

Find similar

Porter Airlines

6 Nov

SFO1:40 p.m.San Francisco

4h 57m

YYZ9:37 p.m.Toronto Pearson Intl

10 Nov

YYZ9:45 a.m.Toronto Pearson Intl

5h 55m

SFO12:40 p.m.San Francisco

C$ 361

Find similar

Porter Airlines

5 Nov

SFO1:40 p.m.San Francisco

4h 57m

YYZ9:37 p.m.Toronto Pearson Intl

3 Feb

YYZ9:45 a.m.Toronto Pearson Intl

5h 55m

SFO12:40 p.m.San Francisco

C$ 364

Find similar

WestJet flights from San Francisco to Region of Ontario

Our best WestJet deals on San Francisco to Region of Ontario flight tickets

WestJet

16 Jan

SFO1:00 p.m.San Francisco

13h 28m

1 stop

YKF5:28 a.m.Toronto Region of Waterloo Intl

22 Jan

YKF6:20 a.m.Toronto Region of Waterloo Intl

8h 52m

1 stop

SFO12:12 p.m.San Francisco

C$ 343

Find similar

WestJet

7 Nov

SFO1:00 p.m.San Francisco

13h 28m

1 stop

YKF5:28 a.m.Toronto Region of Waterloo Intl

13 Nov

YKF6:20 a.m.Toronto Region of Waterloo Intl

8h 52m

1 stop

SFO12:12 p.m.San Francisco

C$ 364

Find similar

WestJet

9 Nov

SFO1:00 p.m.San Francisco

13h 28m

1 stop

YKF5:28 a.m.Toronto Region of Waterloo Intl

13 Nov

YKF6:20 a.m.Toronto Region of Waterloo Intl

8h 52m

1 stop

SFO12:12 p.m.San Francisco

C$ 371

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 11/12

10:15 a.m.-6:58 a.m.

2 stops17h 43m

Toronto Pearson Intl

Mon 15/12

9:45 a.m.-12:40 p.m.

Nonstop5h 55m

C$ 333

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 28/10

10:15 a.m.-6:13 a.m.

3 stops16h 58m

Toronto Pearson Intl

Wed 29/10

9:45 a.m.-12:40 p.m.

Nonstop5h 55m

C$ 338

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 16/1

1:00 p.m.-5:28 a.m.

1 stop13h 28m

Toronto Region of Waterloo Intl

Thu 22/1

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

1 stop8h 52m

C$ 343

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 6/11

1:40 p.m.-9:37 p.m.

Nonstop4h 57m

Toronto Pearson Intl

Sat 31/1

9:45 a.m.-12:40 p.m.

Nonstop5h 55m

C$ 360

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 6/11

1:40 p.m.-9:37 p.m.

Nonstop4h 57m

Toronto Pearson Intl

Mon 10/11

9:45 a.m.-12:40 p.m.

Nonstop5h 55m

C$ 361

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 7/11

1:00 p.m.-5:28 a.m.

1 stop13h 28m

Toronto Region of Waterloo Intl

Thu 13/11

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

1 stop8h 52m

C$ 364

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Sat 8/11

8:25 a.m.-7:55 p.m.

1 stop8h 30m

Toronto Island

Sat 15/11

3:30 p.m.-9:22 p.m.

1 stop8h 52m

C$ 430

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Fri 5/12

8:25 a.m.-9:35 p.m.

1 stop10h 10m

Toronto Island

Sun 7/12

3:30 p.m.-9:22 p.m.

1 stop8h 52m

C$ 486

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Mon 10/11

11:55 p.m.-1:28 p.m.

1 stop10h 33m

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

4:45 p.m.-9:45 a.m.

2 stops20h 00m

C$ 522

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/1

8:49 a.m.-9:21 p.m.

1 stop9h 32m

London

Tue 20/1

5:15 a.m.-10:54 a.m.

1 stop8h 39m

C$ 526

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 San Francisco 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, April is the cheapest month to fly from San Francisco to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 486. If you are unable to visit Region of Ontario during the month of April, then departing from San Francisco during the month March is also very affordable. Most momondo users find prices during this month for around C$ 501.

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

The cheapest day to depart from San Francisco to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 524. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 638.

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 afternoon. Flights from San Francisco to Region of Ontario during this time can be as low as C$ 368. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 571 on average. Flights to Region of Ontario from San Francisco in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest San Francisco to Ontario flight route?

Fly from San Francisco to Toronto Pearson Intl for the best San Francisco - 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 San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 607 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 San Francisco for as low as C$ 480 on momondo.

What cabin class options are available on San Francisco to Ontario flights?

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

You could potentially save up to 42% on your flight if you consider stops on a San Francisco to Region of Ontario flight.

Cheap San Francisco to Region of Ontario flight deals and tips

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

Best price found	C$ 255
Fastest flight time	4h 55m
Direct flights	Every day
Airports in Region of Ontario	1 airport

The best one-way flight to Region of Ontario from San Francisco in the past 72 hours is C$ 255. The best round-trip flight deal from San Francisco to Region of Ontario found on momondo in the last 72 hours is C$ 489.

The fastest flight from San Francisco to Region of Ontario takes 4h 55m

Direct flights go from San Francisco to Region of Ontario every day.

There is 1 airport near Region of Ontario: Toronto Pearson Intl (YYZ)

Search flight deals

When did momondo last update prices for flights from San Francisco Airport to Ontario?
Prices for flights from San Francisco Airport to Ontario are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Ontario?
As of October 2025, there are 5 operators available to choose from for flights from San Francisco Airport to Ontario.
How old do you have to be to fly from San Francisco Airport 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 San Francisco Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to Region of Ontario?
Based on momondo bookings for flights between San Francisco and Region of Ontario, the leading plane model is Embraer 195 E2, making up 35.30% of the total bookings. Other popular models include Boeing 737 MAX 8 with 23.53%, Airbus A220-300 with 15.09%, and Boeing 737-800 with 13.57%.

Best airlines flying from San Francisco to Region of Ontario

Compare and see reviews for airlines that fly from San Francisco to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
Porter Airlines	PriceFrom C$ 198	Free Cancellation	Rating 7.9 376 reviews	Search Porter Airlines flights
Air Canada	PriceFrom C$ 250	Free Cancellation	Rating 7.1 10,256 reviews	Search Air Canada flights
Air Transat	PriceFrom C$ 302	Free Cancellation	Rating 7.7 455 reviews	Search Air Transat flights
WestJet	PriceFrom C$ 324	Free Cancellation	Rating 7.2 3,121 reviews	Search WestJet flights
United Airlines	PriceFrom C$ 497	Free Cancellation	Rating 7.4 8,965 reviews	Search United Airlines flights

Why use momondo?

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

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

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

All flight searches from San Francisco to Ontario on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Francisco to Ontario?

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

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

Price alerts on flights to Ontario from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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

Popular Cities in Ontario

Flights to Torontofrom C$ 99

Flights to Vancouverfrom C$ 70

Flights to Montrealfrom C$ 223

Flights to Calgaryfrom C$ 59

Flights to Ottawafrom C$ 158

Flights to Winnipegfrom C$ 121

Flights to Halifaxfrom C$ 110

Flights to Kelownafrom C$ 81

Flights to Saskatoonfrom C$ 109

Flights to Reginafrom C$ 133

Flights to St. John'sfrom C$ 247

Flights to Québec Cityfrom C$ 293

Cheap flights from San Francisco to Ontario from C$ 138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Ontario departing on 16/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from San Francisco to Ontario

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Porter Airlines flights from San Francisco to Region of Ontario

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

WestJet flights from San Francisco to Region of Ontario

Our best WestJet deals on San Francisco to Region of Ontario flight tickets

momondo Fare Finder

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

See travel insights to Ontario from

How to get the cheapest flight ticket from San Francisco 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?

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 San Francisco to Ontario flight route?

Fly from San Francisco to Toronto Pearson Intl for the best San Francisco - Ontario flight prices

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

What cabin class options are available on San Francisco to Ontario flights?

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

You could potentially save up to 42% on your flight if you consider stops on a San Francisco to Region of Ontario flight.

What is the cheapest airline that flies from San Francisco to Ontario?

WestJet, American Airlines, and Air Canada are the most popular carriers operating from San Francisco to Ontario

Which airlines fly to Region of Ontario?

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

As of October 2025, 28 flights take off from San Francisco and land in Region of Ontario each day. The most common flight departure time for this route is 8:00a.m., with 52% of daily flights taking off in the afternoon.

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

The number of flights available between San Francisco and Region of Ontario is 202 per week as of October 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

Cheap San Francisco to Region of Ontario flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Region of Ontario

When did momondo last update prices for flights from San Francisco Airport to Ontario?

How many operators does momondo search for flights from San Francisco Airport to Ontario?

How old do you have to be to fly from San Francisco Airport to Ontario?

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

What is the most popular plane model from San Francisco to Region of Ontario?

Best airlines flying from San Francisco to Region of Ontario

Compare and see reviews for airlines that fly from San Francisco to Region of Ontario with momondo

Why use momondo?

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

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

How can momondo help me find flights from San Francisco to Ontario?

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

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