SFO

C$ 171 Find Cheap Flights from Ontario to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 20/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 303
Overall average: C$ 441
WestJet
Fri 30/1Fri 6/2
YOW - SFO • 1 stop
Cheapest direct flights
C$ 393
Typical prices: C$ 406-C$ 539
Multiple Airlines
Mon 2/2Sun 15/2
YYZ - SFO • Direct
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We hope you love your trip to San Francisco!
Flight Deals
Useful Info
Flight Deals

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.

Recent round-trip flight deals from Ontario to San Francisco

Fri, 30 Jan - Fri, 6 Feb
WestJet Logo
6:00 a.m. - 12:12 p.m.
YOW
-
SFO
9h 12m1 stop
WestJet Logo
1:00 p.m. - 12:40 a.m.
SFO
-
YOW
8h 40m1 stop
C$ 303WestJet
Tue, 13 Jan - Tue, 20 Jan
WestJet Logo
5:45 a.m. - 12:12 p.m.
YHM
-
SFO
9h 27m1 stop
WestJet Logo
1:00 p.m. - 5:17 p.m.
SFO
-
YHM
25h 17m1 stop
C$ 304WestJet
Thu, 15 Jan - Thu, 22 Jan
WestJet Logo
6:00 a.m. - 12:12 p.m.
YOW
-
SFO
9h 12m1 stop
WestJet Logo
1:00 p.m. - 12:40 a.m.
SFO
-
YOW
8h 40m1 stop
C$ 311WestJet
Tue, 13 Jan - Tue, 20 Jan
WestJet Logo
5:45 a.m. - 12:12 p.m.
YHM
-
SFO
9h 27m1 stop
WestJet Logo
1:00 p.m. - 5:17 p.m.
SFO
-
YHM
25h 17m1 stop
C$ 318WestJet
Thu, 29 Jan - Thu, 5 Feb
Porter Airlines Logo
6:45 a.m. - 12:43 p.m.
YOW
-
SFO
8h 58m1 stop
Porter Airlines Logo
1:45 p.m. - 12:43 a.m.
SFO
-
YOW
7h 58m1 stop
C$ 339Porter Airlines
Thu, 22 Jan - Thu, 29 Jan
Porter Airlines Logo
6:45 a.m. - 12:43 p.m.
YOW
-
SFO
8h 58m1 stop
Porter Airlines Logo
1:45 p.m. - 12:43 a.m.
SFO
-
YOW
7h 58m1 stop
C$ 344Porter Airlines
Mon, 26 Jan - Sat, 14 Feb
Multiple Airlines Logo
9:50 a.m. - 12:43 p.m.
YYZ
-
SFO
5h 53mdirect
Multiple Airlines Logo
8:47 p.m. - 3:35 p.m.
SFO
-
YYZ
15h 48m1 stop
C$ 394Multiple Airlines
Fri, 9 Jan - Sat, 17 Jan
Multiple Airlines Logo
10:00 a.m. - 7:19 p.m.
YYZ
-
SFO
12h 19m1 stop
Multiple Airlines Logo
10:15 a.m. - 12:38 a.m.
SFO
-
YYZ
11h 23m1 stop
C$ 395Multiple Airlines
Thu, 22 Jan - Mon, 2 Feb
Air Canada Logo
5:10 a.m. - 10:54 a.m.
YXU
-
SFO
8h 44m1 stop
Air Canada Logo
8:30 a.m. - 9:20 p.m.
SFO
-
YXU
9h 50m1 stop
C$ 423Air Canada
Sat, 31 Jan - Sat, 7 Feb
Air Canada Logo
9:50 a.m. - 9:44 p.m.
YXU
-
SFO
14h 54m1 stop
Air Canada Logo
8:30 a.m. - 9:21 p.m.
SFO
-
YXU
9h 51m1 stop
C$ 442Air Canada
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 171
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly and prices are also 2% lower on average.
Flight from Hamilton to San Francisco

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?

Book flights to San Francisco if you plan to visit one of these locations
San Mateo
Sunnyvale
South San Francisco
Santa Clara
Sonoma
Palo Alto
Burlingame
Redwood City
Cupertino
Woodland
San Bruno
Milpitas
Millbrae
Mountain View
Pacific Grove
Big Sur
Lodi
Modesto
Roseville
Manteca

Everything you need to know for your flight to San Francisco

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

San Francisco (SFO)