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YKF - SFO

C$ 285 Find cheap flights from Toronto Kitchener-Waterloo 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 from Kitchener-Waterloo to San Francisco departing on 24/7. 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
0 bags
Sat 29/6
Sat 6/7

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Toronto to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Toronto to San Francisco, as well as popular online travel agencies
In the last 7 days, travellers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Kitchener-Waterloo to San Francisco (YKF-SFO)

 
These are the cheapest deals for flights from Kitchener-Waterloo to San Francisco currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Kitchener-Waterloo to San Francisco

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Kitchener-Waterloo to San Francisco.

Recent one-way flight deals from Kitchener-Waterloo to San Francisco

Only flying one-way? Below are some of the best one-way flight deals from Kitchener-Waterloo to San Francisco found on KAYAK recently.

Recent last-minute flight deals from Kitchener-Waterloo to San Francisco

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Kitchener-Waterloo to San Francisco.

Recent direct flight deals from Kitchener-Waterloo to San Francisco

The latest deals for direct flights from Kitchener-Waterloo to San Francisco so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Kitchener-Waterloo to San Francisco

Find recent round-trip train or bus tickets from Kitchener-Waterloo to San Francisco.

All round-trip flight deals to San Francisco

The cheapest plane tickets to San Francisco found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 564WestJet
Find Deal
Tue, 13 Aug - Tue, 20 Aug
6:15 a.m. - 2:33 p.m.YKF-SFO
11h 18m2 stops
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 587WestJet
Find Deal
Tue, 16 Jul - Tue, 23 Jul
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 598WestJet
Find Deal
Wed, 3 Jul - Mon, 15 Jul
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
7:30 a.m. - 12:52 a.m.SFO-YKF
14h 22m1 stop
C$ 602WestJet
Find Deal
Wed, 17 Jul - Wed, 24 Jul
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
7:30 a.m. - 12:52 a.m.SFO-YKF
14h 22m1 stop
C$ 605WestJet
Find Deal
Tue, 2 Jul - Sat, 6 Jul
6:15 a.m. - 2:33 p.m.YKF-SFO
11h 18m2 stops
7:30 a.m. - 12:52 a.m.SFO-YKF
14h 22m1 stop
C$ 612WestJet
Find Deal
Tue, 16 Jul - Tue, 30 Jul
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 625WestJet
Find Deal
Sun, 16 Jun - Mon, 15 Jul
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
7:30 a.m. - 12:52 a.m.SFO-YKF
14h 22m1 stop
C$ 629WestJet
Find Deal
Wed, 3 Jul - Sat, 6 Jul
6:15 a.m. - 5:13 p.m.YKF-SFO
13h 58m1 stop
5:50 p.m. - 12:52 a.m.SFO-YKF
28h 02m3 stops
C$ 1,137
Find Deal
Wed, 3 Jul - Mon, 8 Jul
6:15 a.m. - 2:33 p.m.YKF-SFO
11h 18m2 stops
5:50 p.m. - 12:52 a.m.SFO-YKF
28h 02m3 stops
C$ 1,207
Find Deal
Wed, 3 Jul - Mon, 8 Jul
6:15 a.m. - 2:33 p.m.YKF-SFO
11h 18m2 stops
C$ 285WestJet
Find Deal
Wed, 24 Jul
6:15 a.m. - 2:33 p.m.YKF-SFO
11h 18m2 stops
C$ 289WestJet
Find Deal
Tue, 23 Jul
6:15 a.m. - 2:33 p.m.YKF-SFO
11h 18m2 stops
C$ 296WestJet
Find Deal
Tue, 16 Jul
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
C$ 304WestJet
Find Deal
Tue, 13 Aug
6:15 a.m. - 12:00 p.m.YKF-SFO
8h 45m1 stop
C$ 309WestJet
Find Deal
Tue, 25 Jun
8:35 p.m. - 9:30 a.m.YKF-SFO
15h 55m1 stop
C$ 346Flair Airlines
Find Deal
Mon, 17 Jun
9:40 p.m. - 10:33 a.m.YKF-SFO
15h 53m2 stops
C$ 361
Find Deal
Tue, 18 Jun
6:15 a.m. - 4:34 p.m.YKF-SFO
13h 19m2 stops
C$ 594
Find Deal
Sat, 6 Jul
5:45 p.m. - 9:05 a.m.YKF-SFO
18h 20m1 stop
C$ 605Air Canada
Find Deal
Sun, 7 Jul
6:05 a.m. - 1:32 p.m.YKF-SFO
10h 27m2 stops
C$ 785Air Canada
Find Deal
Mon, 3 Jun
2:55 p.m. - 9:30 a.m.YKF-SFO
21h 35m2 stops
10:15 a.m. - 7:00 a.m.SFO-YKF
17h 45m1 stop
C$ 675Flair Airlines
Find Deal
Sat, 1 Jun - Tue, 4 Jun
6:15 a.m. - 12:02 p.m.YKF-SFO
8h 47m1 stop
10:15 a.m. - 7:00 a.m.SFO-YKF
17h 45m1 stop
C$ 714
Find Deal
Sat, 1 Jun - Tue, 4 Jun
2:55 p.m. - 9:30 a.m.YKF-SFO
21h 35m2 stops
10:15 a.m. - 6:40 a.m.SFO-YKF
17h 25m2 stops
C$ 735Flair Airlines
Find Deal
Sat, 1 Jun - Tue, 4 Jun
6:15 a.m. - 9:13 p.m.YKF-SFO
17h 58m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 848WestJet
Find Deal
Sat, 1 Jun - Mon, 17 Jun
6:15 a.m. - 12:02 p.m.YKF-SFO
8h 47m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 904WestJet
Find Deal
Mon, 3 Jun - Tue, 16 Jul
6:15 a.m. - 12:02 p.m.YKF-SFO
8h 47m1 stop
6:05 p.m. - 12:52 a.m.SFO-YKF
27h 47m1 stop
C$ 928WestJet
Find Deal
Sat, 1 Jun - Sun, 16 Jun
6:15 a.m. - 2:34 p.m.YKF-SFO
11h 19m2 stops
12:50 p.m. - 1:10 a.m.SFO-YKF
9h 20m1 stop
C$ 937WestJet
Find Deal
Tue, 4 Jun - Thu, 6 Jun
6:15 a.m. - 12:02 p.m.YKF-SFO
8h 47m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 941WestJet
Find Deal
Sun, 2 Jun - Sat, 20 Jul
6:15 a.m. - 12:02 p.m.YKF-SFO
8h 47m1 stop
12:50 p.m. - 12:52 a.m.SFO-YKF
9h 02m1 stop
C$ 956WestJet
Find Deal
Fri, 31 May - Mon, 17 Jun
6:15 a.m. - 8:11 a.m.YKF-SFO
28h 56m3 stops
6:05 p.m. - 12:52 a.m.SFO-YKF
27h 47m1 stop
C$ 1,875
Find Deal
Sun, 2 Jun - Sun, 16 Jun

Flights from Kitchener-Waterloo to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from Kitchener-Waterloo to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Toronto Kitchener-Waterloo Airport to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Toronto Kitchener-Waterloo Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Toronto Kitchener-Waterloo Airport to San Francisco is February, where tickets cost C$ 416 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is C$ 706 and C$ 692 respectively.

How far in advance should I book a flight from Toronto Kitchener-Waterloo Airport to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Toronto Kitchener-Waterloo Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Toronto Kitchener-Waterloo Airport to San Francisco, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Good to know

Low season

May

High season

July

Cheapest flight

C$ 285
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly (15% more expensive on average)
Flight from Toronto Kitchener-Waterloo to San Francisco

When to book flights from Kitchener-Waterloo to San Francisco

Are your dates flexible? Find out the best times to travel from Kitchener-Waterloo to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Toronto Kitchener-Waterloo to San Francisco flights

  • What is the cheapest flight from Toronto Kitchener-Waterloo Airport to San Francisco?

    In the last 3 days, the lowest price for a flight from Toronto Kitchener-Waterloo Airport to San Francisco was C$ 208 for a one-way ticket and C$ 412 for a round-trip.

  • Which aircraft models fly most regularly from Toronto Kitchener-Waterloo to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Toronto Kitchener-Waterloo to San Francisco?

    Star Alliance is the only airline alliance operating flights between Toronto Kitchener-Waterloo and San Francisco.

  • How does KAYAK find such low prices on flights from Toronto Kitchener-Waterloo 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 Toronto Kitchener-Waterloo to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Toronto Kitchener-Waterloo to San Francisco?

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

  • What is the Hacker Fare option on flights from Toronto Kitchener-Waterloo 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 Toronto Kitchener-Waterloo with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Toronto Kitchener-Waterloo 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 Toronto Kitchener-Waterloo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Kitchener-Waterloo to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Toronto to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Kitchener-Waterloo to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
WestJetOverall score based on 2866 reviews
7.3Comfort
6.4Entertainment
6.4Food
7.7Boarding
8.1Crew
Airline reviews

The Priority check in in Toronto rivalled the poorest I've experienced. The young woman at the desk (7:30 AM, YYZ) was unfriendly and abrupt, behaving as though we were interrupting her day. Her inch long fingernails said it all....I really don't belong here. Other than that, WestJet personnel provided a good travel experience, especially in flight. I must say that the repeated announcements about the cabin being full and how folks should gate check their bags became tedious. WestJet should just offer free checked luggage and charge for carry on suitcases. It would save a lot of time and the voices of the gate agents.

10.0 ExcellentCameron, May 2024YYZ - YYC
Read more about WestJet reviews

The Priority check in in Toronto rivalled the poorest I've experienced. The young woman at the desk (7:30 AM, YYZ) was unfriendly and abrupt, behaving as though we were interrupting her day. Her inch long fingernails said it all....I really don't belong here. Other than that, WestJet personnel provided a good travel experience, especially in flight. I must say that the repeated announcements about the cabin being full and how folks should gate check their bags became tedious. WestJet should just offer free checked luggage and charge for carry on suitcases. It would save a lot of time and the voices of the gate agents.

It was very, very cold extremely uncomfortable almost unbearable I was sitting at the front of the cabin

Nice smooth flight with pleasant stewards. Slept most of the flight, they could have slowly turned on the lights to make it more pleasant. Otherwise a good trip.

Great! No food was available during the flight due to the catering service strike but snacks were given throughout the flight which was nice.

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Crew was rude.didn’t even say hi or welcome to board

Nothing special. Unacceptable wait for baggage on arriving in Calgary

Departure delay on a late night flight. Made us even later. Tired but got home.

Westjet forced me to put my carry-on baggage in check-in probably because I was assigned seat 23A (the last row seat), which had no cabin space, which is unfair. I wanted to carry on my luggage so that I don't have to wait at the airport for my luggage. Also, because there was no cabin space, I was forced to keep my laptop bag under the seat, which I didn't want to as I was carrying 2 laptops and charger. The airline should basically tell people that if you are assigned a last row seat, then you are not allowed a cabin baggage or a personal item.

Easy processing, flight time was quick and staff was professional and kind.

Book cheap flights from Toronto to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Toronto to San Francisco found on KAYAK in the last 72 hours.
24/7Wed
2 stopsWestJet
11h 18mYKF-SFO
C$ 285
23/7Tue
2 stopsWestJet
11h 18mYKF-SFO
C$ 289
16/7Tue
2 stopsWestJet
11h 18mYKF-SFO
C$ 296
13/8Tue
1 stopWestJet
8h 45mYKF-SFO
C$ 304
25/6Tue
1 stopWestJet
8h 45mYKF-SFO
C$ 309
17/6Mon
1 stopFlair Airlines
15h 55mYKF-SFO
C$ 346
18/6Tue
2 stops
15h 53mYKF-SFO
C$ 361
6/7Sat
2 stops
13h 19mYKF-SFO
C$ 594
7/7Sun
1 stopAir Canada
18h 20mYKF-SFO
C$ 605
3/6Mon
2 stopsAir Canada
10h 27mYKF-SFO
C$ 785

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Last minute flights from Kitchener-Waterloo to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Toronto to San Francisco that are departing in the next 10 days.
1/6Sat
multi-stopFlair Airlines
21h 35mYKF-SFO
4/6Tue
multi-stopFlair Airlines
17h 45mSFO-YKF
C$ 675
1/6Sat
multi-stop
8h 47mYKF-SFO
4/6Tue
multi-stop
17h 45mSFO-YKF
C$ 714
1/6Sat
multi-stopFlair Airlines
21h 35mYKF-SFO
4/6Tue
multi-stopFlair Airlines
17h 25mSFO-YKF
C$ 735
1/6Sat
multi-stopWestJet
17h 58mYKF-SFO
17/6Mon
multi-stopWestJet
9h 02mSFO-YKF
C$ 848
3/6Mon
multi-stopWestJet
8h 47mYKF-SFO
16/7Tue
multi-stopWestJet
9h 02mSFO-YKF
C$ 904
1/6Sat
multi-stopWestJet
8h 47mYKF-SFO
16/6Sun
multi-stopWestJet
27h 47mSFO-YKF
C$ 928
4/6Tue
multi-stopWestJet
11h 19mYKF-SFO
6/6Thu
multi-stopWestJet
9h 20mSFO-YKF
C$ 937
2/6Sun
multi-stopWestJet
8h 47mYKF-SFO
20/7Sat
multi-stopWestJet
9h 02mSFO-YKF
C$ 941
31/5Fri
multi-stopWestJet
8h 47mYKF-SFO
17/6Mon
multi-stopWestJet
9h 02mSFO-YKF
C$ 956
2/6Sun
multi-stop
28h 56mYKF-SFO
16/6Sun
multi-stop
27h 47mSFO-YKF
C$ 1,875

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Toronto Kitchener-Waterloo - San Francisco Flights

Departure:

Toronto Kitchener-Waterloo (YKF)Canada

Destination:

San Francisco (SFO)United States

Cabin classes: