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$192+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This WestJet deal was found by Cheapflights users on 12/9. 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 12/166:20 amYKF - SFO
1 stop8h 52mWestJet
Sun 12/281:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/9$732
This FlightHub deal was found by Cheapflights users on 12/10. 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.
Tue 12/236:20 amYKF - SFO
1 stop8h 52mWestJet
Thu 12/251:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/10$891
This Justfly.com deal was found by Cheapflights users on 12/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:20 amYKF - SFO
1 stop8h 52mWestJet
Fri 1/301:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/11$923
This oojo deal was found by Cheapflights users on 12/10. 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.
Tue 12/236:20 amYKF - SFO
1 stop8h 52mWestJet
Sun 1/41:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/10$1,035
This oojo deal was found by Cheapflights users on 12/10. 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.
Tue 12/166:20 amYKF - SFO
1 stop8h 52mWestJet
Thu 12/251:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/10$1,056
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:20 amYKF - SFO
2 stops18h 53mWestJet
Mon 12/225:45 amSFO - YKF
2 stops20h 43mWestJet
Deal found 12/10$1,177
This Justfly.com deal was found by Cheapflights users on 12/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:00 pmYKF - SFO
1 stop20h 12mWestJet
Fri 1/91:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/11$1,255
This Travelocity deal was found by Cheapflights users on 12/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:25 amYKF - SFO
2 stops14h 25mWestJet
Fri 1/301:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 12/11$1,274
This FlightHub deal was found by Cheapflights users on 12/11. 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 12/266:25 amYKF - SFO
2 stops16h 33mWestJet
Tue 12/309:21 amSFO - YKF
2 stops41h 07mWestJet
Deal found 12/11$1,420
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:20 amYKF - SFO
2 stops30h 10mMultiple Airlines
Fri 12/191:00 pmSFO - YKF
1 stop24h 00mMultiple Airlines
Deal found 12/9$1,560

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$271
(Trip.com)

One-way from

$192
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$333
Provider with most accurate pricing for Toronto Region of Waterloo Intl-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Toronto Region of Waterloo Intl-San Francisco flights.
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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. 9% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 12, 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 2/10

6:20 am-12:10 pm

1 stop8h 50m

San Francisco

Sun 5/3

12:50 pm-12:45 am

1 stop8h 55m

$271

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 2/10

6:20 am-12:10 pm

1 stop8h 50m

San Francisco

Mon 5/4

12:50 pm-12:45 am

1 stop8h 55m

$271

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 1/24

7:00 pm-12:12 pm

1 stop20h 12m

San Francisco

Fri 1/30

1:00 pm-5:28 am

1 stop13h 28m

$276

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 5/8

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Sat 5/9

12:50 pm-12:45 am

1 stop8h 55m

$289

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 5/7

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Sun 5/10

12:50 pm-12:45 am

1 stop8h 55m

$289

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 4/29

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Tue 5/5

12:50 pm-12:45 am

1 stop8h 55m

$289

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 1/24

7:00 pm-12:12 pm

1 stop20h 12m

San Francisco

Sun 2/1

1:00 pm-5:29 am

1 stop13h 29m

$293

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 2/10

6:20 am-12:10 pm

1 stop8h 50m

San Francisco

Sat 5/2

7:30 am-12:45 am

1 stop14h 15m

$299

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 5/1

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Wed 5/6

12:50 pm-12:45 am

1 stop8h 55m

$302

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 5/29

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Tue 6/2

7:30 am-12:45 am

1 stop14h 15m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 18 results
1
2

Compare providers for flights from Region of Waterloo Intl to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Region of Waterloo Intl to San Francisco in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Toronto Region of Waterloo Intl Airport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Toronto Region of Waterloo Intl Airport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Toronto Region of Waterloo Intl Airport-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Toronto Region of Waterloo Intl Airport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Toronto Region of Waterloo Intl Airport-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 50m. WestJet provides one of the quickest options available for as low as $271. 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.

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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Santa Clara
San Bruno
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Burlingame
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