YKF - SFO

C$ 266 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 23/1. 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

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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Everything you should know

Cheapest round-trip
C$ 375
WestJet
Tue 10/2Mon 4/5
YKF - SFO • 1 stop
Cheapest one-way flights
C$ 249
Flair Airlines
Fri 23/1
YKF - SFO • 2 stops
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We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

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

Tue, 10 Feb - Mon, 4 May
WestJet Logo
6:20 a.m. - 12:10 p.m.
YKF
-
SFO
8h 50m1 stop
WestJet Logo
12:50 p.m. - 12:45 a.m.
SFO
-
YKF
8h 55m1 stop
C$ 375WestJet
Sat, 24 Jan - Fri, 30 Jan
WestJet Logo
7:00 p.m. - 12:12 p.m.
YKF
-
SFO
20h 12m1 stop
WestJet Logo
1:00 p.m. - 5:28 a.m.
SFO
-
YKF
13h 28m1 stop
C$ 382WestJet
Sat, 4 Apr - Sun, 12 Apr
WestJet Logo
7:00 p.m. - 12:10 p.m.
YKF
-
SFO
20h 10m1 stop
WestJet Logo
1:00 p.m. - 5:29 a.m.
SFO
-
YKF
13h 29m1 stop
C$ 387WestJet
Wed, 6 May - Wed, 13 May
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$ 399WestJet
Wed, 29 Apr - Tue, 5 May
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$ 400WestJet
Sat, 24 Jan - Sun, 1 Feb
WestJet Logo
7:00 p.m. - 12:12 p.m.
YKF
-
SFO
20h 12m1 stop
WestJet Logo
1:00 p.m. - 5:29 a.m.
SFO
-
YKF
13h 29m1 stop
C$ 405WestJet
Sat, 17 Jan - Sun, 25 Jan
WestJet Logo
7:00 p.m. - 12:12 p.m.
YKF
-
SFO
20h 12m1 stop
WestJet Logo
1:00 p.m. - 5:28 a.m.
SFO
-
YKF
13h 28m1 stop
C$ 407WestJet
Tue, 10 Feb - Sat, 2 May
WestJet Logo
6:20 a.m. - 12:10 p.m.
YKF
-
SFO
8h 50m1 stop
WestJet Logo
7:30 a.m. - 12:45 a.m.
SFO
-
YKF
14h 15m1 stop
C$ 414WestJet
Fri, 1 May - Wed, 6 May
WestJet Logo
6:00 a.m. - 1:57 p.m.
YKF
-
SFO
10h 57m2 stops
WestJet Logo
12:50 p.m. - 12:45 a.m.
SFO
-
YKF
8h 55m1 stop
C$ 415WestJet
Fri, 1 May - Wed, 6 May
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$ 418WestJet
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.

Which airlines fly direct between Toronto Region of Waterloo Intl Airport and San Francisco?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Toronto Region of Waterloo Intl Airport to San Francisco.

There are 2 airlines that fly direc from Toronto Region of Waterloo Intl Airport to San Francisco. They are Air Canada and WestJet. The cheapest airline for this route is WestJet, with the best round-trip deal found costing C$ 287. On average, the best prices for this route can be found at WestJet.

Good to know

Low seasonOctober
Cheapest flightC$ 249
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly and prices are also 11% 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$ 266 for a one-way ticket and C$ 375 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.

  • Which airline alliances offer flights from Toronto Region of Waterloo Intl to San Francisco?

    Star Alliance is the only airline alliance operating flights between Toronto Region of Waterloo Intl and San Francisco.

  • Which is the best airline for flights from Toronto to San Francisco, WestJet or Air Canada?

    The two airlines most popular with KAYAK users for flights from Toronto to San Francisco are WestJet and Air Canada. With an average price for the route of C$ 372 and an overall rating of 7.2, WestJet is the most popular choice. Air Canada is also a great choice for the route, with an average price of C$ 518 and an overall rating of 7.1.

  • 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 3195 reviews
7.1Comfort
7.9Crew
6.1Entertainment
6.2Food
7.4Boarding
Airline reviews

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

6.0 GoodAnonymous, Dec 2025
YYZ - FLL
Read more WestJet reviews

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

I when to Jamaica for my dad funeral and I did not get my luggage from westjet . I add to buy clothes putting me financial debt i did no want to be in Westjet did not call me to apologize are to inquire about my luggage I am still angry about it

Ground staff was not helpful, but staff at the business counter were excellent.

I selected "carry-on" for a round trip on Kayak, but my return flight on WestJet did not include a carry-on and they would not allow me to add one. My only option was to add a "checked bag" which I had to wait for on the luggage carousel after landing. Not a good experience.

We landed 26 min early. It was awesome! Smooth ride too.

There is no snack and nit much that would be considered gluten free in yiur food selections. One of your snacks should be a gluten free cookie or small bar etc. maybe it was me but I didn’t see any free movies just internet connection and YouTube .

I like how spacious the plane was but I did not like the fact that there was no entertainment

In spite of purchasing premium, I felt it was perhaps the most uncomfortable seat I have flown in. The base was either broken or poorly made and had no support. Even placing pillows and blankets on the seat (1D aisle) didn’t help. It made for a long and mostly sleepless six hour flight. Crew also were very loudly talking to each other through the night making it very hard to sleep. It was purchased for the price, so I get the risk, but was not impressed.

The staff at the airport and on the plane were wonderful I especially wanna acknowledge the staff who boarded us at the Calgary airport. The women who helped us board at the airport were incredible… they were so kind and sweet…I very happy with WestJet and I am hoping I can fly more often to Canada.

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.

The staff was great and made the long trip easy peasy!

The free Wi-fi for Aeroplan members was a great touch. The time passed quickly. I found the seats seemed a little closer together than I remember. Not Air Canada's fault, but we were about 20 minutes late landing because the airport was too busy. We had to circle around for a while. The boarding and disembarking went very smoothly.

The flight was very smooth and good. Boarding was fast, but the staff was just decently friendly.

I liked the behaviour of the crew members.The flight was good.

No food to provide, they forgot that, in some cases, people stay at the airport for hours without food. Now, to provide them with food, they have to ask them to pay, because some don't have money. That way, they can't eat.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

Terrible, return flight was cancelled a night before the flight was scheduled to depart and I was notified by an email and an automated message on their phone line. I’ll never book Air Canada again

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

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

Information on your arrival and departure airports