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Region of Waterloo Intl

$175+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YKF
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheap 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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$283
(Justfly.com)

One-way from

$175
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$421
Provider with most accurate pricing for San Francisco-Toronto Region of Waterloo Intl flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Toronto Region of Waterloo Intl flights.
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From San Francisco to Toronto Region of Waterloo Intl
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One-way flight from San Francisco to Toronto Region of Waterloo Intl
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Highest demand for flights based on searches. 10% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 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 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 October 27, 2025.

This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/141:00 pmSFO - YKF
1 stop13h 28mWestJet
Thu 1/86:20 amYKF - SFO
1 stop8h 52mWestJet
Deal found 10/26$486
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/141:00 pmSFO - YKF
1 stop13h 28mWestJet
Sat 1/107:00 pmYKF - SFO
1 stop20h 12mWestJet
Deal found 10/26$524
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:00 pmSFO - YKF
1 stop13h 28mWestJet
Tue 11/186:20 amYKF - SFO
1 stop8h 52mWestJet
Deal found 10/26$601
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:25 pmSFO - YKF
2 stops38h 03mWestJet
Sat 1/317:00 pmYKF - SFO
1 stop20h 10mWestJet
Deal found 10/26$730
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:00 pmSFO - YKF
1 stop13h 28mWestJet
Mon 1/56:20 amYKF - SFO
2 stops35h 45mWestJet
Deal found 10/27$790
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:00 pmSFO - YKF
1 stop13h 28mWestJet
Mon 12/86:20 amYKF - SFO
2 stops18h 53mWestJet
Deal found 10/26$796
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/161:00 pmSFO - YKF
1 stop13h 28mMultiple Airlines
Sat 11/226:20 amYKF - SFO
2 stops17h 14mMultiple Airlines
Deal found 10/26$817
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.
Sun 12/141:00 pmSFO - YKF
1 stop13h 28mWestJet
Tue 12/236:20 amYKF - SFO
2 stops33h 01mWestJet
Deal found 10/27$821
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.
Fri 12/121:00 pmSFO - YKF
1 stop13h 28mWestJet
Fri 12/266:25 amYKF - SFO
2 stops40h 57mWestJet
Deal found 10/27$848
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:00 pmSFO - YKF
1 stop13h 28mWestJet
Tue 11/116:20 amYKF - SFO
1 stop8h 52mWestJet
Deal found 10/27$849
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:00 pmSFO - YKF
1 stop13h 28mWestJet
Tue 11/116:20 amYKF - SFO
1 stop8h 52mWestJet
Deal found 10/26$857

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 October 27, 2025.
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

Fri 1/16

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Thu 1/22

6:20 am-12:12 pm

1 stop8h 52m

$283

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sun 12/14

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Thu 1/8

6:20 am-12:12 pm

1 stop8h 52m

$486

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sun 12/14

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Sat 1/10

7:00 pm-12:12 pm

1 stop20h 12m

$524

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 11/14

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Tue 11/18

6:20 am-12:12 pm

1 stop8h 52m

$601

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sun 1/4

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Thu 1/22

6:20 am-12:12 pm

1 stop8h 52m

$678

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 12/12

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Mon 1/5

6:20 am-3:05 pm

2 stops35h 45m

$790

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sun 11/16

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Sat 11/22

6:20 am-8:34 pm

2 stops17h 14m

$817

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sun 12/14

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Tue 12/23

6:20 am-12:21 pm

2 stops33h 01m

$821

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 12/12

1:00 pm-5:28 am

1 stop13h 28m

Toronto Region of Waterloo Intl

Fri 12/26

6:25 am-8:22 pm

2 stops40h 57m

$848

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 11/28

1:00 pm-5:28 am

1 stop13h 28m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 19 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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Toronto Region of Waterloo Intl Airport

What is the cheapest time of day to fly from SFO to YKF?

Find hourly flight availability from San Francisco to Region of Waterloo Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

One of the essential ways to save on airfare from San Francisco to Toronto Region of Waterloo Intl Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 75% on airfare.

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 13h 28m. 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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