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Cheap flights from Toronto Region of Waterloo Intl Airport to San Francisco from C$ 265

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Region of Waterloo Intl to San Francisco

Enter your travel dates to find the best prices.

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 12 December 2025.

Tue 16/126:20 a.m.YKF - SFO
1 stop8h 52mWestJet
Sun 28/121:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 9/12C$ 1,009
Tue 23/126:20 a.m.YKF - SFO
1 stop8h 52mWestJet
Thu 25/121:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 10/12C$ 1,229
Thu 18/126:20 a.m.YKF - SFO
1 stop8h 52mWestJet
Fri 30/11:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 11/12C$ 1,273
Tue 23/126:20 a.m.YKF - SFO
1 stop8h 52mWestJet
Sun 4/11:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 10/12C$ 1,427
Tue 16/126:20 a.m.YKF - SFO
1 stop8h 52mWestJet
Thu 25/121:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 10/12C$ 1,456
Mon 15/126:20 a.m.YKF - SFO
2 stops18h 53mWestJet
Mon 22/125:45 a.m.SFO - YKF
2 stops20h 43mWestJet
Deal found 10/12C$ 1,623
Sat 27/127:00 p.m.YKF - SFO
1 stop20h 12mWestJet
Fri 9/11:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 11/12C$ 1,731
Fri 26/126:25 a.m.YKF - SFO
2 stops14h 25mWestJet
Fri 30/11:00 p.m.SFO - YKF
1 stop13h 28mWestJet
Deal found 11/12C$ 1,757
Fri 26/126:25 a.m.YKF - SFO
2 stops16h 33mWestJet
Tue 30/129:21 a.m.SFO - YKF
2 stops41h 07mWestJet
Deal found 11/12C$ 1,958
Mon 15/126:20 a.m.YKF - SFO
2 stops30h 10mMultiple Airlines
Fri 19/121:00 p.m.SFO - YKF
1 stop24h 00mMultiple Airlines
Deal found 9/12C$ 2,151

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 12 December 2025.

Round-trip from

C$ 374

One-way from

C$ 265

Popular in

March

Cheapest in

October

Average price

C$ 459
WestJet
  • WestJet
  • 10/2-4/5
  • 2 total stops
  • 17h 45m total
  • Toronto to San Francisco
Search Deals
22/1
  • 22/1
  • 2 total stops
  • 31h 17m total
  • Toronto to San Francisco
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 629,999 searches. Data last updated 12 December 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 10/2

6:20 a.m.-12:10 p.m.

1 stop8h 50m

San Francisco

Sun 3/5

12:50 p.m.-12:45 a.m.

1 stop8h 55m

C$ 374

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 10/2

6:20 a.m.-12:10 p.m.

1 stop8h 50m

San Francisco

Mon 4/5

12:50 p.m.-12:45 a.m.

1 stop8h 55m

C$ 374

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 24/1

7:00 p.m.-12:12 p.m.

1 stop20h 12m

San Francisco

Fri 30/1

1:00 p.m.-5:28 a.m.

1 stop13h 28m

C$ 381

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 7/5

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Sun 10/5

12:50 p.m.-12:45 a.m.

1 stop8h 55m

C$ 399

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 29/4

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Tue 5/5

12:50 p.m.-12:45 a.m.

1 stop8h 55m

C$ 399

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 24/1

7:00 p.m.-12:12 p.m.

1 stop20h 12m

San Francisco

Sun 1/2

1:00 p.m.-5:29 a.m.

1 stop13h 29m

C$ 404

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 10/2

6:20 a.m.-12:10 p.m.

1 stop8h 50m

San Francisco

Sat 2/5

7:30 a.m.-12:45 a.m.

1 stop14h 15m

C$ 412

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 1/5

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Wed 6/5

12:50 p.m.-12:45 a.m.

1 stop8h 55m

C$ 416

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 29/5

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Tue 2/6

7:30 a.m.-12:45 a.m.

1 stop14h 15m

C$ 444

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 22/1

7:05 a.m.-11:22 a.m.

2 stops31h 17m

C$ 265

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 17 results
1
2

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.

Cheapflights Insights

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

What’s the top layover airport for flights from Toronto Region of Waterloo Intl Airport to San Francisco?

Share of one-stop round-trip flights from Toronto Region of Waterloo Intl Airport to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.

Calgary (YYC) – chosen by Cheapflights users on 67% of one-stop itineraries from Toronto Region of Waterloo Intl Airport to San Francisco on Cheapflights.

What’s the cheapest layover airport for flights from Toronto Region of Waterloo Intl Airport to San Francisco?

Average round-trip fare for 1-stop flights from Toronto Region of Waterloo Intl Airport to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 448.

What’s the fastest layover option from Toronto Region of Waterloo Intl Airport to San Francisco?

Shortest average travel time for 1-stop one-way flights from Toronto Region of Waterloo Intl Airport to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Calgary (YYC) have the shortest average one-way travel time for 1-stop routes: 9h 00m.

Which airport typically offers the quickest layover for flights from Toronto Region of Waterloo Intl Airport to San Francisco?

Average layover duration for 1-stop one-way flights from Toronto Region of Waterloo Intl Airport to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Calgary (YYC) offer the fastest connection on this route, with an average layover time of 1h 58m.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 12 December 2025.
Read through reviews of airlines operating flights from Toronto Region of Waterloo Intl Airport to San Francisco, such as WestJet and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,195 reviews
Check prices

Entertainment

6.1

Food

6.2

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
WestJet
7.2
Good
3,195 reviews
WestJet
7.2
Good
3,195 reviews
Check prices

Entertainment

6.1

Food

6.2

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
Air Canada
7.1
Good
10,516 reviews
WestJet
7.2
Good
3,195 reviews
Check prices

Entertainment

6.1

Food

6.2

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

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?

    San Francisco (SFO), located 19.0 km from the city centre, is the airport you fly into when you book flights from Toronto Region of Waterloo Intl to San Francisco. 2 airlines have flights to San Francisco from Toronto Region of Waterloo Intl on a regular basis. Booking flights from Toronto Region of Waterloo Intl to San Francisco should not be difficult; the airport handles an average of 0 inbound flights from Toronto Region of Waterloo Intl per day.

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

    WestJet can get you from Toronto Region of Waterloo Intl Airport to San Francisco in just under 8h 50m. Your travel time can differ by up to . The distance from Toronto Region of Waterloo Intl Airport to San Francisco is about 3566 km.

  • What are the cheapest airlines flying from Toronto Region of Waterloo Intl Airport to San Francisco round-trip?

    Cheapflights users have booked flights from Toronto Region of Waterloo Intl Airport to San Francisco round-trip from C$ 198. Another airline that can offer you cheap pricing is Air Canada. WestJet is priced at 52% lower than the current average price of a flight leaving 3 months from now.

  • 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Richmond
Newark
Redwood City
Burlingame
South San Francisco
Scotts Valley
Novato
Santa Clara
Vallejo

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Alternative routes for Region of Waterloo Intl to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Region of Waterloo Intl to San Francisco

Discover the top 2 airlines that operate flights from Region of Waterloo Intl to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 286AverageC$ 370FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 335AverageC$ 516FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Region of Waterloo Intl to San Francisco?

Deals for Region of Waterloo Intl to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Region of Waterloo Intl to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Region of Waterloo Intl to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Region of Waterloo Intl to San Francisco with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Region of Waterloo Intl to San Francisco, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Region of Waterloo Intl to San Francisco become cheaper?

Of course! You can now track prices for flights from Region of Waterloo Intl to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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