YKF - SFO

C$ 197 Find Cheap Flights from Toronto Region of Waterloo Intl 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 Region of Waterloo Intl to San Francisco departing on 28/8. 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

KAYAK searches 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
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Cheap Flights from Region of Waterloo Intl to San Francisco (YKF-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Region of Waterloo Intl 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 Region of Waterloo Intl to San Francisco

Thu, 28 Aug - Fri, 5 Sep
WestJet Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 349WestJet
Find Deal
Fri, 12 Sep - Fri, 19 Sep
WestJet Logo
6:00 a.m. - 11:54 a.m.YKF-SFO
8h 54m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 362WestJet
Find Deal
Fri, 12 Sep - Fri, 19 Sep
WestJet Logo
6:00 a.m. - 11:54 a.m.YKF-SFO
8h 54m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 373WestJet
Find Deal
Thu, 28 Aug - Fri, 5 Sep
WestJet Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 392WestJet
Find Deal
Tue, 19 Aug - Sat, 23 Aug
WestJet Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
WestJet Logo
12:50 p.m. - 12:46 a.m.SFO-YKF
8h 56m1 stop
C$ 393WestJet
Find Deal
Thu, 28 Aug - Thu, 4 Sep
WestJet Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 399WestJet
Find Deal
Fri, 29 Aug - Mon, 8 Sep
WestJet Logo
6:00 a.m. - 1:59 p.m.YKF-SFO
10h 59m2 stops
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 404WestJet
Find Deal
Wed, 27 Aug - Wed, 3 Sep
WestJet Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.SFO-YKF
8h 55m1 stop
C$ 413WestJet
Find Deal
Thu, 28 Aug - Fri, 5 Sep
 Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
 Logo
5:45 a.m. - 12:45 a.m.SFO-YKF
16h 00m3 stops
C$ 453
Find Deal
Mon, 25 Aug - Wed, 3 Sep
 Logo
6:00 a.m. - 11:56 a.m.YKF-SFO
8h 56m1 stop
 Logo
7:10 a.m. - 5:30 a.m.SFO-YKF
19h 20m2 stops
C$ 462
Find Deal
Booking Insights

KAYAK's insights & trends for Region of Waterloo Intl to San Francisco flights

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

What is the most popular layover airport when flying from Toronto Region of Waterloo Intl to San Francisco?

Percentage of one-stop round-trip flights from Toronto Region of Waterloo Intl to San Francisco chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Calgary (YYC) is the top choice – 50% of KAYAK users who clicked on one-stop flights from Toronto Region of Waterloo Intl to San Francisco picked an itinerary connecting there.

What is the cheapest layover airport when flying from Toronto Region of Waterloo Intl to San Francisco?

Average round-trip price for one-stop flights from Toronto Region of Waterloo Intl to San Francisco clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Calgary (YYC) offer the most affordable fares, with an average round-trip price of C$ 421.

Which layover airport offers the shortest total travel time from Toronto Region of Waterloo Intl to San Francisco?

Shortest average total travel time for one-stop one-way flights from Toronto Region of Waterloo Intl to San Francisco via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Calgary (YYC) for the shortest journey. The average one-way travel time for flights connecting there is 4h 44m.

Which layover airport has the quickest connection when flying from Toronto Region of Waterloo Intl to San Francisco?

Average layover duration at different layover airports for one-stop one-way flights from Toronto Region of Waterloo Intl to San Francisco, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Calgary (YYC) often has the shortest layovers from Toronto Region of Waterloo Intl to San Francisco, with an average of 2h 08m.


Good to know

Low seasonFebruary
Cheapest flightC$ 197
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly and prices are also 24% lower on average.
Flight from Toronto Region of Waterloo Intl to San Francisco

When to book flights from Region of Waterloo Intl to San Francisco

Are your dates flexible? Find out the best times to travel from Region of Waterloo Intl 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 Region of Waterloo Intl to San Francisco flights

  • What is the cheapest flight from Toronto Region of Waterloo Intl Airport to San Francisco?

    In the last 3 days, the lowest price for a flight from Toronto Region of Waterloo Intl Airport to San Francisco was C$ 143 for a one-way ticket and C$ 254 for a round-trip.

  • Which aircraft models fly most regularly from Toronto Region of Waterloo Intl to San Francisco?

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

  • How does KAYAK find such low prices on flights from Toronto Region of Waterloo Intl 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 Region of Waterloo Intl to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Toronto Region of Waterloo Intl 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 Region of Waterloo Intl 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 Region of Waterloo Intl 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 Region of Waterloo Intl with another airline.

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

Reviews of the top airlines flying from Region of Waterloo Intl 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 Region of Waterloo Intl 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.
7.2
WestJetOverall score based on 2975 reviews
7.9Crew
7.4Boarding
7.0Comfort
6.1Entertainment
6.2Food
Airline reviews

Absolutely terrible, from the customer service to boarding the plane. On the phone, there was some mishaps with getting in my correct date and they did not help me retrieve a refund or any assistance. I’m gonna be reporting to all my followers and family around the region of Los Angeles to New York.

2.0 MediocreAdam, Jul 2025YYZ - LAX
Read more WestJet reviews

Absolutely terrible, from the customer service to boarding the plane. On the phone, there was some mishaps with getting in my correct date and they did not help me retrieve a refund or any assistance. I’m gonna be reporting to all my followers and family around the region of Los Angeles to New York.

Generally good. However. The flight left 30 mins behind schedule with no reason given.

Nothing to like because my inbound flight was cancelled without notification by West Jet or third party, JustFly. I couldn’t take the inbound flight due to cancellation; therefore could not take the outbound flight back.

Not the greatest experience everything was pretty mediocre. My seat was by the washroom in the aisle and was not located well as everyone past each other people were right in my seat and space.

There was a medical emergency that the crew handled very well. There was no “entertainment” of any sort-no movie/music/whatever. Food was typical of airlines: mediocre.

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Found the seats very crowded—too close together ! And waited a long time for our luggage All staff at both ends were excellent!!!

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

Terrible all around. Flight was late and airplane was very uncomfortable. The crew were unhelpful and hid in the back. Did zero work. No entertainment.

I booked and paid extra for exit door seats also pre paid for my luggage air Canada changed plains and I never got what I paid for and they made me pay for luggage again they also did this to my wife. They are the most unorganized company I have ever dealt with. I am sure I will never see the extra money I paid for the seats or the recharge for the luggage. They are subsidized by the taxpayers and don’t give a dam just a horrible way to do business

Your crew was so so so wonderful Only thing sound be great if you kept some phone chargers and converters rest 👌👌👌👌

The speakers were way too loud. Music was played during boarding too. This noise could've been avoided.

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

Multiple change of the gates at Pearson, delayed flight was extremely uncomfortable.

Easy boarding, punctuality, decent service. I can only complain about the measly snack.

Everything you need to know for your flight from Region of Waterloo Intl to San Francisco

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