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$163+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$336
(Mytrip)

One-way from

$163
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$223
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. 17% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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 12/57:05 amYKF - SFO
2 stops29h 25mMultiple Airlines
Sun 12/710:15 amSFO - YKF
2 stops16h 13mMultiple Airlines
Deal found 10/28$332
This Mytrip deal was found by Cheapflights users on 10/27. 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.
Thu 11/207:05 amYKF - SFO
2 stops16h 29mMultiple Airlines
Wed 11/261:20 pmSFO - YKF
2 stops13h 08mMultiple Airlines
Deal found 10/27$395
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Sat 11/226:20 amYKF - SFO
3 stops30h 10mMultiple Airlines
Sun 11/3010:15 amSFO - YKF
2 stops16h 13mMultiple Airlines
Deal found 10/28$432
This Trip.com deal was found by Cheapflights users on 10/25. 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.
Thu 12/46:20 amYKF - SFO
1 stop8h 52mWestJet
Sun 12/71:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 10/25$444
This Mytrip deal was found by Cheapflights users on 10/27. 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.
Thu 11/276:20 amYKF - SFO
1 stop8h 52mMultiple Airlines
Sun 11/3010:15 amSFO - YKF
2 stops16h 13mMultiple Airlines
Deal found 10/27$484
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 11/276:20 amYKF - SFO
1 stop8h 52mMultiple Airlines
Thu 12/410:10 pmSFO - YKF
2 stops38h 50mMultiple Airlines
Deal found 10/28$485
This Mytrip deal was found by Cheapflights users on 10/26. 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.
Sun 11/237:05 amYKF - SFO
2 stops14h 52mMultiple Airlines
Sun 11/3010:15 amSFO - YKF
2 stops16h 13mMultiple Airlines
Deal found 10/26$509
This FlightHub deal was found by Cheapflights users on 10/27. 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.
Thu 11/206:20 amYKF - SFO
1 stop8h 52mWestJet
Sun 12/141:00 pmSFO - YKF
1 stop13h 28mWestJet
Deal found 10/27$531

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 October 28, 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

Thu 1/8

6:20 am-12:12 pm

1 stop8h 52m

San Francisco

Sun 1/18

10:15 am-5:28 am

2 stops16h 13m

$336

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 11/20

7:05 am-8:34 pm

2 stops16h 29m

San Francisco

Wed 11/26

1:20 pm-5:28 am

2 stops13h 08m

$395

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 1/10

7:00 pm-12:12 pm

1 stop20h 12m

San Francisco

Sun 5/3

12:50 pm-12:45 am

1 stop8h 55m

$397

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 11/22

6:20 am-9:30 am

3 stops30h 10m

San Francisco

Sun 11/30

10:15 am-5:28 am

2 stops16h 13m

$432

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 12/4

6:20 am-12:12 pm

1 stop8h 52m

San Francisco

Sun 12/7

1:00 pm-5:28 am

1 stop13h 28m

$444

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 1/10

7:00 pm-12:12 pm

1 stop20h 12m

San Francisco

Wed 1/21

9:00 am-5:28 am

2 stops17h 28m

$458

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 11/27

6:20 am-12:12 pm

1 stop8h 52m

San Francisco

Sun 11/30

10:15 am-5:28 am

2 stops16h 13m

$484

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sun 11/23

7:05 am-6:57 pm

2 stops14h 52m

San Francisco

Sun 11/30

10:15 am-5:28 am

2 stops16h 13m

$509

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 12/26

6:25 am-8:22 pm

2 stops40h 57m

San Francisco

Fri 1/16

1:00 pm-5:28 am

1 stop13h 28m

$636

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 12/11

6:20 am-12:12 pm

1 stop8h 52m

San Francisco

Thu 12/18

8:25 am-5:28 am

2 stops42h 03m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 19 results
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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 October.
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 20h 12m. WestJet provides one of the quickest options available for as low as $397. 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
Antioch
Manteca
Vallejo
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Lodi

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