SFO

C$ 224 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 20/4. 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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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, 22 May - Fri, 29 May
WestJet Logo
12:25 p.m. - 9:55 p.m.
YOW
-
SFO
12h 30m
2 stops
WestJet Logo
6:05 p.m. - 5:35 a.m.
SFO
-
YOW
8h 30m
1 stop
C$ 377WestJet
Wed, 20 May - Wed, 3 Jun
Multiple Airlines Logo
9:45 a.m. - 12:20 p.m.
YYZ
-
SFO
5h 35mdirect
Multiple Airlines Logo
6:05 p.m. - 5:45 a.m.
SFO
-
YYZ
8h 40m
1 stop
C$ 401Multiple Airlines
Fri, 22 May - Mon, 25 May
WestJet Logo
10:25 p.m. - 12:00 p.m.
YYZ
-
SFO
16h 35m
1 stop
WestJet Logo
6:05 p.m. - 5:45 a.m.
SFO
-
YYZ
8h 40m
1 stop
C$ 406WestJet
Wed, 6 May - Wed, 13 May
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$ 432Porter Airlines
Thu, 23 Apr - Sun, 26 Apr
Air Transat Logo
9:50 a.m. - 12:45 p.m.
YYZ
-
SFO
5h 55mdirect
Air Transat Logo
1:45 p.m. - 9:42 p.m.
SFO
-
YYZ
4h 57mdirect
C$ 435Air Transat
Tue, 5 May - Tue, 12 May
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$ 436Porter Airlines
Tue, 14 Apr - Sat, 2 May
Air Canada Logo
5:10 a.m. - 10:55 a.m.
YXU
-
SFO
8h 45m
1 stop
Air Canada Logo
8:05 a.m. - 9:38 p.m.
SFO
-
YXU
10h 33m
2 stops
C$ 472Air Canada
Wed, 6 May - Wed, 13 May
Air Canada Logo
12:30 p.m. - 9:02 p.m.
YTZ
-
SFO
11h 32m
1 stop
Air Canada Logo
8:05 a.m. - 9:32 p.m.
SFO
-
YTZ
10h 27m
1 stop
C$ 475Air Canada
Mon, 15 Jun - Mon, 15 Jun
United Airlines Logo
2:55 p.m. - 8:37 p.m.
YTZ
-
SFO
8h 42m
1 stop
United Airlines Logo
11:30 p.m. - 4:41 p.m.
SFO
-
YTZ
14h 11m
1 stop
C$ 549United Airlines
Fri, 1 May - Tue, 5 May
United Airlines Logo
2:20 p.m. - 1:50 a.m.
YTZ
-
SFO
14h 30m
2 stops
United Airlines Logo
5:30 a.m. - 8:09 p.m.
SFO
-
YTZ
11h 39m
2 stops
C$ 556United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 246
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 1% lower on average.
Flight from Toronto Pearson Airport 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
Palo Alto
Sunnyvale
Santa Clara
South San Francisco
Burlingame
Sonoma
Redwood City
San Bruno
Milpitas
Lodi
Pacific Grove
Big Sur
Millbrae
Mountain View
Roseville
Woodland
Walnut Creek
San Carlos
Modesto

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)