How does KAYAK find such low prices on flights from Ontario to San Francisco?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Francisco. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Francisco?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Ontario to San Francisco?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Ontario with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Francisco?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

C$ 197 CHEAP FLIGHTS from Ontario to San Francisco

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Cheap Flights from Ontario to San Francisco

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to San Francisco

Thu, 4 Sep - Thu, 4 Sep

11:23 a.m. - 7:05 p.m.YUL-SFO

10h 42m2 stops

11:45 p.m. - 8:16 a.m.SFO-YUL

5h 31mdirect

C$ 336United Airlines

Find Deal

Thu, 4 Sep - Wed, 10 Sep

1:30 p.m. - 9:24 p.m.YYZ-SFO

10h 54m1 stop

12:50 p.m. - 12:22 a.m.SFO-YYZ

8h 32m1 stop

C$ 336WestJet

Find Deal

Fri, 31 Oct - Mon, 3 Nov

9:45 a.m. - 9:22 p.m.YYZ-SFO

14h 37m1 stop

5:45 a.m. - 8:32 p.m.SFO-YYZ

11h 47m1 stop

C$ 337

Find Deal

Thu, 4 Sep - Wed, 10 Sep

3:00 p.m. - 9:24 p.m.YYZ-SFO

9h 24m1 stop

12:50 p.m. - 12:22 a.m.SFO-YYZ

8h 32m1 stop

C$ 340WestJet

Find Deal

Sat, 8 Nov - Sun, 16 Nov

8:00 p.m. - 9:30 a.m.YYZ-SFO

16h 30m1 stop

10:15 a.m. - 6:25 a.m.SFO-YYZ

17h 10m1 stop

C$ 345Flair Airlines

Find Deal

Fri, 14 Nov - Sun, 16 Nov

9:45 a.m. - 4:54 p.m.YYZ-SFO

10h 09m1 stop

5:45 a.m. - 8:32 p.m.SFO-YYZ

11h 47m1 stop

C$ 347

Find Deal

Thu, 30 Oct - Sun, 2 Nov

6:45 a.m. - 12:40 p.m.YUL-SFO

8h 55m1 stop

1:40 p.m. - 12:35 a.m.SFO-YUL

7h 55m1 stop

C$ 381Porter Airlines

Find Deal

Thu, 4 Sep - Wed, 10 Sep

4:45 p.m. - 7:51 p.m.YUL-SFO

6h 06mdirect

11:40 a.m. - 8:05 p.m.SFO-YUL

5h 25mdirect

C$ 387Air Canada

Find Deal

Fri, 31 Oct - Sun, 2 Nov

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

5h 55mdirect

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

4h 57mdirect

C$ 389Porter Airlines

Find Deal

Thu, 4 Sep - Wed, 10 Sep

8:25 a.m. - 3:28 p.m.YUL-SFO

10h 03m1 stop

11:35 a.m. - 12:36 a.m.SFO-YUL

10h 01m1 stop

C$ 389Air Canada

Find Deal

Useful Info

Low season	January
High season	August
Cheapest flight	C$ 197

Best time to beat the crowds (6% less expensive on average)

Most popular time to fly and prices are also 2% lower on average.

Flight from Toronto Pearson Airport to San Francisco

How does KAYAK find such low prices on flights from Ontario to San Francisco?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Francisco.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Francisco?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to San Francisco?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Francisco?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Redwood City

South San Francisco

Sunnyvale

San Mateo

Palo Alto

Sonoma

Burlingame

San Bruno

Cupertino

Woodland

Big Sur

Pacific Grove

Millbrae

Manteca

Modesto

Calistoga

Roseville

Milpitas

Yountville

Walnut Creek

Everything you need to know for your flight to San Francisco

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in San Francisco

San Francisco (SFO)

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SFO

C$ 197 Find Cheap Flights from Ontario to San Francisco

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

Cheap Flights from Ontario to San Francisco

Recent round-trip flight deals from Ontario to San Francisco

Recent one-way flight deals from Ontario to San Francisco

Recent last minute flight deals from Ontario to San Francisco

Recent direct flight deals from Ontario to San Francisco

Good to know

FAQs for booking flights from Ontario to San Francisco

How does KAYAK find such low prices on flights from Ontario to San Francisco?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Francisco.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Francisco?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to San Francisco?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Francisco?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near San Francisco?

Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco

Cabin class types available on flights to Ontario

Complete your trip to San Francisco with a hotel stay or car rental

Find direct flights for San Francisco

Flights to other popular destinations

Flights from domestic origins to San Francisco

Choose which airport to fly into in San Francisco

Find deals for your return flight