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$172+ Cheap flights from Region of Waterloo Intl (YKF) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Region of Waterloo Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Region of Waterloo Intl (YKF) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$301
(oojo)

One-way from

$172
(oojo)

Popular in

December

Cheapest in

February

Average price

$272
From Toronto Region of Waterloo Intl to San Francisco
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One-way flight from Toronto Region of Waterloo Intl to San Francisco
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Highest demand for flights based on searches. 20% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Region of Waterloo Intl to San Francisco

Cheapest flights from Region of Waterloo Intl to San Francisco
Explore the most affordable flight options available from Region of Waterloo Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Flightnetwork deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amYKF - SFO
1 stop18h 24mWestJet
Thu 10/912:50 pmSFO - YKF
1 stop8h 55mWestJet
Deal found 9/9$276
This oojo deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:00 amYKF - SFO
2 stops10h 57mWestJet
Fri 10/107:30 amSFO - YKF
1 stop14h 15mWestJet
Deal found 9/9$281
This WestJet deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:00 amYKF - SFO
1 stop8h 54mWestJet
Wed 10/2212:50 pmSFO - YKF
1 stop8h 55mWestJet
Deal found 9/9$284
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:20 amYKF - SFO
2 stops17h 15mMultiple Airlines
Mon 11/311:20 amSFO - YKF
2 stops15h 08mMultiple Airlines
Deal found 9/9$287
This oojo deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amYKF - SFO
1 stop18h 24mWestJet
Mon 10/612:50 pmSFO - YKF
1 stop8h 55mWestJet
Deal found 9/9$288
This Mytrip deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:00 amYKF - SFO
1 stop8h 54mMultiple Airlines
Sat 10/187:30 amSFO - YKF
2 stops19h 00mMultiple Airlines
Deal found 9/8$292
This Mytrip deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:00 amYKF - SFO
1 stop8h 54mMultiple Airlines
Thu 10/97:30 amSFO - YKF
2 stops19h 00mMultiple Airlines
Deal found 9/8$293
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:15 amYKF - SFO
2 stops18h 09mMultiple Airlines
Fri 10/311:00 pmSFO - YKF
1 stop13h 28mMultiple Airlines
Deal found 9/9$295
This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:00 amYKF - SFO
1 stop18h 24mWestJet
Sun 10/127:30 amSFO - YKF
1 stop14h 15mWestJet
Deal found 9/9$296
This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amYKF - SFO
1 stop18h 24mWestJet
Sun 10/57:30 amSFO - YKF
1 stop14h 15mWestJet
Deal found 9/9$297
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:00 amYKF - SFO
1 stop18h 24mWestJet
Sun 10/57:30 amSFO - YKF
1 stop14h 15mWestJet
Deal found 9/9$298

Cheapflights Fare Finder

 
Customize your flight search to find flights from Region of Waterloo Intl to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Toronto Region of Waterloo Intl Airport to San Francisco that are best for you.

Fly from

Region of Waterloo Intl

Fly to

San Francisco

Route

Depart

Return

Price

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 10/14

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Mon 10/20

12:50 pm-12:45 am

1 stop8h 55m

$303

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sun 10/19

6:15 am-9:24 pm

2 stops18h 09m

San Francisco

Fri 10/24

12:50 pm-5:15 am

1 stop13h 25m

$303

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 10/17

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Mon 10/20

12:50 pm-12:45 am

1 stop8h 55m

$306

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 10/17

6:15 am-9:24 pm

2 stops18h 09m

San Francisco

Sun 10/19

10:15 am-5:15 am

2 stops16h 00m

$314

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 10/3

6:00 am-9:24 pm

1 stop18h 24m

San Francisco

Mon 10/6

7:30 am-12:45 am

1 stop14h 15m

$322

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 10/3

6:00 am-9:24 pm

1 stop18h 24m

San Francisco

Sun 10/12

12:50 pm-12:45 am

1 stop8h 55m

$332

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 10/25

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Fri 10/31

1:00 pm-5:28 am

1 stop13h 28m

$335

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Mon 10/20

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Wed 10/22

12:50 pm-12:45 am

1 stop8h 55m

$336

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 10/3

6:15 am-9:24 pm

2 stops18h 09m

San Francisco

Sun 10/12

10:15 am-5:15 am

2 stops16h 00m

$338

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 9/30

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Fri 10/10

12:50 pm-12:45 am

1 stop8h 55m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 20 results
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Best time to book a flight from Region of Waterloo Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Region of Waterloo Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Region of Waterloo Intl to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from Toronto Region of Waterloo Intl?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Toronto Region of Waterloo Intl. On average, San Francisco has 0 inbound flights from Toronto Region of Waterloo Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from Toronto Region of Waterloo Intl Airport to San Francisco?

    A quick flight from Toronto Region of Waterloo Intl Airport to San Francisco can take about 8h 54m. WestJet provides one of the quickest options available for as low as $303. The distance from Toronto Region of Waterloo Intl Airport to San Francisco is about 2216 mi.

  • Can I find deals for flights from Region of Waterloo Intl to San Francisco that include hotel bookings?

    Yes. In addition to deals on Region of Waterloo Intl to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Region of Waterloo Intl to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Region of Waterloo Intl to San Francisco.

  • Can I find deals for business class flights from Region of Waterloo Intl to San Francisco?

    Yes. Cheapflights offers flight deals from Region of Waterloo Intl to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Toronto Region of Waterloo Intl Airport to San Francisco (average of $276). Flying from Toronto Region of Waterloo Intl Airport to San Francisco in June is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
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