SFO

C$ 228 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 5/5. 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$ 362
Overall average: C$ 475
WestJet
Sun 31/5Sat 6/6
YYZ - SFO • 1 stop
Cheapest direct flights
C$ 403
Typical prices: C$ 365-C$ 580
Porter Airlines
Thu 5/3Sun 8/3
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

Sun, 31 May - Sat, 6 Jun
WestJet Logo
9:00 a.m. - 4:40 p.m.
YYZ
-
SFO
10h 40m
1 stop
WestJet Logo
6:00 a.m. - 7:35 p.m.
SFO
-
YYZ
10h 35m
2 stops
C$ 362WestJet
Tue, 14 Apr - Wed, 22 Apr
Multiple Airlines Logo
9:35 a.m. - 4:52 p.m.
YYZ
-
SFO
10h 17m
1 stop
Multiple Airlines Logo
3:31 p.m. - 7:36 p.m.
SFO
-
YYZ
25h 05m
2 stops
C$ 363Multiple Airlines
Thu, 19 Feb - Sun, 1 Mar
Multiple Airlines Logo
8:00 p.m. - 7:48 a.m.
YYZ
-
SFO
14h 48m
1 stop
Multiple Airlines Logo
2:10 p.m. - 6:43 a.m.
SFO
-
YYZ
13h 33m
1 stop
C$ 365Multiple Airlines
Sat, 7 Mar - Wed, 11 Mar
Multiple Airlines Logo
9:50 a.m. - 12:42 p.m.
YYZ
-
SFO
5h 52mdirect
Multiple Airlines Logo
7:32 p.m. - 7:36 p.m.
SFO
-
YYZ
21h 04m
2 stops
C$ 366Multiple Airlines
Thu, 4 Jun - Sun, 7 Jun
Porter Airlines Logo
6:45 a.m. - 12:20 p.m.
YUL
-
SFO
8h 35m
1 stop
Porter Airlines Logo
1:20 p.m. - 12:37 a.m.
SFO
-
YUL
8h 17m
1 stop
C$ 434Porter Airlines
Wed, 22 Apr - Wed, 29 Apr
Porter Airlines Logo
6:45 a.m. - 12:45 p.m.
YUL
-
SFO
9h 00m
1 stop
Porter Airlines Logo
1:45 p.m. - 12:35 a.m.
SFO
-
YUL
7h 50m
1 stop
C$ 452Porter Airlines
Sun, 1 Mar - Wed, 4 Mar
Air Canada Logo
9:25 a.m. - 9:39 p.m.
YXU
-
SFO
15h 14m
1 stop
Air Canada Logo
7:30 a.m. - 9:21 p.m.
SFO
-
YXU
10h 51m
2 stops
C$ 464Air Canada
Sun, 1 Mar - Wed, 4 Mar
United Airlines Logo
5:40 p.m. - 1:28 a.m.
YXU
-
SFO
10h 48m
2 stops
United Airlines Logo
5:10 a.m. - 9:21 p.m.
SFO
-
YXU
13h 11m
2 stops
C$ 494United Airlines
Sat, 25 Apr - Sat, 2 May
United Airlines Logo
2:20 p.m. - 10:55 p.m.
YTZ
-
SFO
11h 35m
2 stops
United Airlines Logo
6:30 a.m. - 8:09 p.m.
SFO
-
YTZ
10h 39m
2 stops
C$ 529United Airlines
Sat, 25 Apr - Sat, 2 May
Air Canada Logo
5:10 a.m. - 10:55 a.m.
YXU
-
SFO
8h 45m
1 stop
Air Canada Logo
7:30 p.m. - 11:43 a.m.
SFO
-
YXU
13h 13m
2 stops
C$ 530Air Canada
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 238
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 13% 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
Palo Alto
Burlingame
Redwood City
Sonoma
Cupertino
San Bruno
Milpitas
Pacific Grove
Woodland
Millbrae
Mountain View
Lodi
Big Sur
Modesto
Walnut Creek
Roseville

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)