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

The number of flights available between San Francisco and Region of Ontario is 23 per day as of November 2025. The most frequent departure time is 8:00AM, with 54% of daily flights leaving 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 166 per week as of November 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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 San Francisco according to our data. Air Canada is the first choice among our users, with 43% 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.

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

WestJet, Porter Airlines, and Alaska Airlines are the most popular carriers operating from San Francisco to Ontario

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 November 2025, there are 8 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?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport 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.

$105 Cheap Flights from San Francisco to Ontario in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:40 pm - 12:35 amSFO-YUL

7h 55m1 stop

6:45 am - 12:40 pmYUL-SFO

8h 55m1 stop

$292Porter Airlines

Find Deal

Fri, Dec 12 - Tue, Dec 16

1:00 pm - 12:26 amSFO-YYZ

8h 26m1 stop

9:45 am - 12:38 pmYYZ-SFO

5h 53mnonstop

$307Multiple Airlines

Find Deal

Tue, Jan 13 - Wed, Jan 21

1:40 pm - 9:37 pmSFO-YYZ

4h 57mnonstop

9:45 am - 12:38 pmYYZ-SFO

5h 53mnonstop

$308Porter Airlines

Find Deal

Wed, Jan 7 - Fri, Jan 16

2:13 pm - 6:20 amSFO-YYZ

13h 07m1 stop

9:45 am - 12:40 pmYYZ-SFO

5h 55mnonstop

$309Multiple Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

1:00 pm - 5:17 pmSFO-YHM

25h 17m1 stop

5:45 am - 12:12 pmYHM-SFO

9h 27m1 stop

$314WestJet

Find Deal

Sun, Jan 18 - Tue, Jan 27

1:00 pm - 12:40 amSFO-YOW

8h 40m1 stop

6:00 am - 12:10 pmYOW-SFO

9h 10m1 stop

$317WestJet

Find Deal

Sun, Jan 25 - Thu, Feb 5

8:25 am - 7:55 pmSFO-YTZ

8h 30m1 stop

10:30 am - 9:22 pmYTZ-SFO

13h 52m1 stop

$374Air Canada

Find Deal

Mon, Dec 8 - Sun, Dec 14

8:25 am - 9:35 pmSFO-YTZ

10h 10m1 stop

3:30 pm - 9:22 pmYTZ-SFO

8h 52m1 stop

$397Air Canada

Find Deal

Mon, Jan 12 - Sun, Jan 18

12:43 am - 5:05 pmSFO-YXU

13h 22m2 stops

5:10 am - 10:54 amYXU-SFO

8h 44m1 stop

$513United Airlines

Find Deal

Mon, Jan 19 - Thu, Jan 22

12:30 am - 3:39 pmSFO-YSB

12h 09m2 stops

4:15 pm - 9:39 pmYSB-SFO

8h 24m1 stop

$721United Airlines

Find Deal

Tue, Dec 30 - Sun, Jan 18

Alaska Airlines flights from San Francisco to Region of Ontario

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

Alaska Airlines

Jan 5

SFO4:42 pmSan Francisco

19h 53m

1 stop

YYZ3:35 pmToronto Pearson Intl

Jan 14

YYZ4:45 pmToronto Pearson Intl

9h 18m

1 stop

SFO11:03 pmSan Francisco

$342

Find similar

Alaska Airlines

Jan 30

SFO7:40 pmSan Francisco

16h 55m

1 stop

YYZ3:35 pmToronto Pearson Intl

Feb 1

YYZ4:45 pmToronto Pearson Intl

24h 15m

1 stop

SFO2:00 pmSan Francisco

$353

Find similar

Alaska Airlines

Dec 3

SFO3:17 pmSan Francisco

21h 18m

2 stops

YYZ3:35 pmToronto Pearson Intl

Dec 9

YYZ4:45 pmToronto Pearson Intl

9h 00m

1 stop

SFO10:45 pmSan Francisco

$461

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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

Dec 12

SFO1:40 pmSan Francisco

7h 55m

1 stop

YUL12:35 amMontreal Pierre Elliott Trudeau Intl

Dec 16

YUL6:45 amMontreal Pierre Elliott Trudeau Intl

8h 55m

1 stop

SFO12:40 pmSan Francisco

$292

Find similar

Porter Airlines

Jan 7

SFO1:40 pmSan Francisco

4h 57m

YYZ9:37 pmToronto Pearson Intl

Jan 16

YYZ9:45 amToronto Pearson Intl

5h 53m

SFO12:38 pmSan Francisco

$308

Find similar

Porter Airlines

Jan 6

SFO1:40 pmSan Francisco

4h 57m

YYZ9:37 pmToronto Pearson Intl

Jan 18

YYZ9:45 amToronto Pearson Intl

5h 53m

SFO12:38 pmSan Francisco

$313

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momondo Fare Finder

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

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Fly to

Route

Depart

Return

Price

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Fri 12/12

1:40 pm-12:35 am

1 stop7h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 12/16

6:45 am-12:40 pm

1 stop8h 55m

$292

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 1/13

1:00 pm-12:26 am

1 stop8h 26m

Toronto Pearson Intl

Wed 1/21

9:45 am-12:38 pm

Nonstop5h 53m

$307

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Wed 1/7

1:40 pm-9:37 pm

Nonstop4h 57m

Toronto Pearson Intl

Fri 1/16

9:45 am-12:38 pm

Nonstop5h 53m

$308

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 12/4

2:13 pm-6:20 am

1 stop13h 07m

Toronto Pearson Intl

Thu 12/11

9:45 am-12:40 pm

Nonstop5h 55m

$309

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Sun 1/18

1:00 pm-5:17 pm

1 stop25h 17m

Hamilton

Tue 1/27

5:45 am-12:12 pm

1 stop9h 27m

$314

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Sun 1/25

1:00 pm-12:40 am

1 stop8h 40m

Ottawa

Thu 2/5

6:00 am-12:10 pm

1 stop9h 10m

$317

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Mon 12/8

8:25 am-7:55 pm

1 stop8h 30m

Toronto Island

Sun 12/14

10:30 am-9:22 pm

1 stop13h 52m

$374

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Mon 1/12

8:25 am-9:35 pm

1 stop10h 10m

Toronto Island

Sun 1/18

3:30 pm-9:22 pm

1 stop8h 52m

$397

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 1/19

12:43 am-5:05 pm

2 stops13h 22m

London

Thu 1/22

5:10 am-10:54 am

1 stop8h 44m

$513

San FranciscoSudbury

SFO - YSB

SFOYSB

San Francisco

Tue 12/30

12:30 am-3:39 pm

2 stops12h 09m

Sudbury

Sun 1/18

4:15 pm-9:39 pm

1 stop8h 24m

$721

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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?

The month of February is, on average, the cheapest month to fly to Region of Ontario from San Francisco, with most prices found around $351. If you aren’t able to travel during the month of February, then book flights to Region of Ontario from San Francisco during April instead. Flights to Region of Ontario in April, while not as cheap as those in February, still average around $352.

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 San Francisco. The lowest ticket price found for a Wednesday departure recently was $559. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from San Francisco to Region of Ontario on a Sunday will generally be more expensive and average around $690. 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 San Francisco to Region of Ontario at noon for as low as $426. 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 $731.

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 $439 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 $344 on momondo.

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

There are 4 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?

No. A direct flight is the cheapest option for a flight between San Francisco to Region of Ontario.

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	$200
Fastest flight time	4h 57m
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 $200. The best round-trip flight deal from San Francisco to Region of Ontario found on momondo in the last 72 hours is $446.

The fastest flight from San Francisco to Region of Ontario takes 4h 57m

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 November 2025, there are 8 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?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport 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 San Francisco to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco to Region of Ontario is Embraer 195 E2 (38.64% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (25.11%), Airbus A220-300 (15.22%), and Boeing 737-800 (10.05%).

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
Frontier	PriceFrom $36	Free Cancellation	Rating 5.8 3,104 reviews	Search Frontier flights
Air Canada	PriceFrom $136	Free Cancellation	Rating 7.1 10,463 reviews	Search Air Canada flights
WestJet	PriceFrom $162	Free Cancellation	Rating 7.2 3,169 reviews	Search WestJet flights
Porter Airlines	PriceFrom $170	Free Cancellation	Rating 8.0 393 reviews	Search Porter Airlines flights
United Airlines	PriceFrom $186	Free Cancellation	Rating 7.4 9,029 reviews	Search United Airlines flights
Air Transat	PriceFrom $191	Free Cancellation	Rating 7.8 475 reviews	Search Air Transat flights
Delta	PriceFrom $197	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
American Airlines	PriceFrom $403	Free Cancellation	Rating 7.2 11,047 reviews	Search American 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?

Flights from San Francisco to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between San Francisco 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 San Francisco 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 San Francisco 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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Find better results for your trip to Ontario

Popular cities in Ontario

Flights to Torontofrom $61

Flights to Vancouverfrom $78

Flights to Montrealfrom $158

Flights to Calgaryfrom $144

Flights to Ottawafrom $158

Flights to Halifaxfrom $232

Flights to Winnipegfrom $145

Flights to Québec Cityfrom $274

Flights to Saskatoonfrom $167

Flights to Vancouverfrom $78

Flights to Kelownafrom $144

Flights to St. John'sfrom $289

Cheap flights from San Francisco to Ontario from $105

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 1/18. 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 and deals

Big names and 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

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Alaska Airlines flights from San Francisco to Region of Ontario

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

Porter Airlines flights from San Francisco to Region of Ontario

Our best Porter Airlines 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 4 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?

No. A direct flight is the cheapest option for a flight between San Francisco to Region of Ontario.

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

WestJet, Porter Airlines, and Alaska Airlines are the most popular carriers operating from San Francisco to Ontario

What airlines fly to Region of Ontario?

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

The number of flights available between San Francisco and Region of Ontario is 23 per day as of November 2025. The most frequent departure time is 8:00AM, with 54% of daily flights leaving 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 166 per week as of November 2025. The most frequent departure day is Mon, with 14% 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