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Region of Waterloo Intl

$141+ Cheap flights from San Francisco (SFO) to Region of Waterloo Intl (YKF)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YKF
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from San Francisco to Region of Waterloo Intl

Cheapest flights from San Francisco to Region of Waterloo Intl
Explore the most affordable flight options available from San Francisco to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This FlightHub deal was found by Cheapflights users on 1/21. 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 4/3012:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Tue 5/56:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/21$276
This Trip.com deal was found by Cheapflights users on 1/20. 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 4/3012:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Fri 5/16:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/20$282
This Trip.com deal was found by Cheapflights users on 1/20. 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.
Fri 5/112:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Sat 6/66:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/20$283
This oojo deal was found by Cheapflights users on 1/21. 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.
Wed 5/2012:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Sun 5/246:00 am
YKF
-
SFO
2 stops10h 57m
WestJet
Deal found 1/21$293
This oojo deal was found by Cheapflights users on 1/21. 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.
Wed 4/2912:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Mon 5/46:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/21$295
This FlightHub deal was found by Cheapflights users on 1/21. 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 5/712:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Mon 5/116:00 am
YKF
-
SFO
2 stops10h 57m
WestJet
Deal found 1/21$300
This oojo deal was found by Cheapflights users on 1/19. 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.
Wed 4/2912:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Sun 5/36:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/19$306
This FlightHub deal was found by Cheapflights users on 1/21. 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 5/2812:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Sun 5/316:00 am
YKF
-
SFO
2 stops10h 57m
WestJet
Deal found 1/21$320
This Trip.com deal was found by Cheapflights users on 1/19. 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 5/1412:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Mon 5/186:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/19$324
This Trip.com deal was found by Cheapflights users on 1/20. 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.
Fri 5/227:30 am
SFO
-
YKF
1 stop14h 15m
WestJet
Mon 5/256:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/20$326
This oojo deal was found by Cheapflights users on 1/21. 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 5/1212:50 pm
SFO
-
YKF
1 stop8h 55m
WestJet
Tue 5/196:00 am
YKF
-
SFO
1 stop8h 54m
WestJet
Deal found 1/21$327

Find flight deals from San Francisco to Region of Waterloo Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Region of Waterloo Intl (YKF). 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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$276
(FlightHub)

One-way from

$166
(eDestinos)

Popular in

December

Cheapest in

February

Average price

$392
Provider with most accurate pricing for San Francisco-Toronto Region of Waterloo Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Toronto Region of Waterloo Intl flights.
Search Deals
From San Francisco to Toronto Region of Waterloo Intl
Search Deals
One-way flight from San Francisco to Toronto Region of Waterloo Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Region of Waterloo Intl 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 January 21, 2026.
Use the filters below to find and compare flights from San Francisco to Toronto Region of Waterloo Intl Airport that are best for you.

Fly from

San Francisco

Fly to

Region of Waterloo Intl

Route

Depart

Return

Price

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sat 5/30

12:50 pm-12:45 am

1 stop8h 55m

Toronto Region of Waterloo Intl

Sat 6/6

6:00 am-11:54 am

1 stop8h 54m

$283

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Wed 5/20

12:50 pm-12:45 am

1 stop8h 55m

Toronto Region of Waterloo Intl

Sun 5/24

6:00 am-1:57 pm

2 stops10h 57m

$293

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Thu 5/28

12:50 pm-12:45 am

1 stop8h 55m

Toronto Region of Waterloo Intl

Tue 6/2

6:00 am-11:54 am

1 stop8h 54m

$295

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Wed 4/29

12:50 pm-12:45 am

1 stop8h 55m

Toronto Region of Waterloo Intl

Mon 5/4

6:00 am-11:54 am

1 stop8h 54m

$295

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Thu 5/28

12:50 pm-12:45 am

1 stop8h 55m

Toronto Region of Waterloo Intl

Sun 5/31

6:00 am-1:57 pm

2 stops10h 57m

$320

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Thu 5/21

2:45 pm-12:45 am

2 stops31h 00m

Toronto Region of Waterloo Intl

Wed 6/3

6:00 am-11:54 am

1 stop8h 54m

$331

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 5/1

2:45 pm-12:45 am

2 stops31h 00m

Toronto Region of Waterloo Intl

Sun 5/10

6:00 am-11:54 am

1 stop8h 54m

$332

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 5/1

7:30 am-12:45 am

1 stop14h 15m

Toronto Region of Waterloo Intl

Sat 5/9

6:00 am-11:54 am

1 stop8h 54m

$336

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 5/22

7:30 am-12:45 am

1 stop14h 15m

Toronto Region of Waterloo Intl

Tue 5/26

6:00 am-11:54 am

1 stop8h 54m

$336

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 6/5

2:45 pm-12:45 am

2 stops31h 00m

Toronto Region of Waterloo Intl

Mon 6/8

6:00 am-11:54 am

1 stop8h 54m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 21 results
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  • Most accurate provider: When it comes to deals on San Francisco-Toronto Region of Waterloo Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Toronto Region of Waterloo Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Toronto Region of Waterloo Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Toronto Region of Waterloo Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 San Francisco-Toronto Region of Waterloo Intl Airport 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 San Francisco to Region of Waterloo Intl

Have a flexible travel schedule? Discover the best time to fly to Region of Waterloo Intl from San Francisco 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 San Francisco to Region of Waterloo Intl. 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 from for flights from San Francisco to Toronto Region of Waterloo Intl?

    For a flight from San Francisco to Toronto Region of Waterloo Intl, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 0 outbound flights to Toronto Region of Waterloo Intl per day. 0 airlines have flights to Toronto Region of Waterloo Intl from San Francisco on a regular basis.

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

    There are many flights that can get you from San Francisco to Toronto Region of Waterloo Intl Airport in 8h 55m. Fly via WestJet to get the fastest option. There are 2216 mi between San Francisco and Toronto Region of Waterloo Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Region of Waterloo Intl 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

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