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Cheap flights from Toronto Region of Waterloo Intl Airport to San Francisco from C$ 238

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 11 September 2025.

Round-trip from

C$ 417

One-way from

C$ 238

Popular in

December

Cheapest in

February

Average price

C$ 377
WestJet
  • WestJet
  • 20/10-22/10
  • 2 total stops
  • 17h 49m total
  • Toronto to San Francisco
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WestJet
  • WestJet
  • 6/10
  • 1 total stop
  • 8h 54m total
  • Toronto to San Francisco
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 166 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease (C$ 34 potential savings vs. average RT price).
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Average for round-trip flights in September 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 11 September 2025.

Fri 3/106:00 a.m.YKF - SFO
1 stop18h 24mWestJet
Thu 9/1012:50 p.m.SFO - YKF
1 stop8h 55mWestJet
Deal found 9/9C$ 382
Mon 6/106:00 a.m.YKF - SFO
2 stops10h 57mWestJet
Fri 10/107:30 a.m.SFO - YKF
1 stop14h 15mWestJet
Deal found 9/9C$ 389
Tue 14/106:00 a.m.YKF - SFO
1 stop8h 54mWestJet
Wed 22/1012:50 p.m.SFO - YKF
1 stop8h 55mWestJet
Deal found 9/9C$ 394
Mon 27/106:20 a.m.YKF - SFO
2 stops17h 15mMultiple Airlines
Mon 3/1111:20 a.m.SFO - YKF
2 stops15h 08mMultiple Airlines
Deal found 9/9C$ 398
Fri 3/106:00 a.m.YKF - SFO
1 stop18h 24mWestJet
Mon 6/1012:50 p.m.SFO - YKF
1 stop8h 55mWestJet
Deal found 9/9C$ 399
Tue 14/106:00 a.m.YKF - SFO
1 stop8h 54mMultiple Airlines
Sat 18/107:30 a.m.SFO - YKF
2 stops19h 00mMultiple Airlines
Deal found 8/9C$ 405
Mon 6/106:00 a.m.YKF - SFO
1 stop8h 54mMultiple Airlines
Thu 9/107:30 a.m.SFO - YKF
2 stops19h 00mMultiple Airlines
Deal found 8/9C$ 406
Fri 24/106:15 a.m.YKF - SFO
2 stops18h 09mMultiple Airlines
Fri 31/101:00 p.m.SFO - YKF
1 stop13h 28mMultiple Airlines
Deal found 9/9C$ 409
Sat 27/96:00 a.m.YKF - SFO
1 stop18h 24mWestJet
Sun 12/107:30 a.m.SFO - YKF
1 stop14h 15mWestJet
Deal found 9/9C$ 410
Fri 3/106:00 a.m.YKF - SFO
1 stop18h 24mWestJet
Sun 5/107:30 a.m.SFO - YKF
1 stop14h 15mWestJet
Deal found 9/9C$ 412
Sat 27/96:00 a.m.YKF - SFO
1 stop18h 24mWestJet
Sun 5/107:30 a.m.SFO - YKF
1 stop14h 15mWestJet
Deal found 9/9C$ 413

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 11 September 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

Sat 18/10

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

1 stop8h 54m

San Francisco

Wed 22/10

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

1 stop8h 55m

C$ 394

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 18/10

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

1 stop8h 54m

San Francisco

Fri 24/10

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

1 stop8h 55m

C$ 394

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 14/10

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

1 stop8h 54m

San Francisco

Fri 24/10

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

1 stop8h 55m

C$ 394

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 17/10

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

1 stop8h 54m

San Francisco

Fri 24/10

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

1 stop8h 55m

C$ 394

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 17/10

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

1 stop8h 54m

San Francisco

Wed 22/10

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

1 stop8h 55m

C$ 394

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 14/10

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

1 stop8h 54m

San Francisco

Thu 23/10

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

1 stop8h 55m

C$ 394

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 9/10

6:00 a.m.-9:24 p.m.

1 stop18h 24m

San Francisco

Sun 12/10

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

1 stop14h 15m

C$ 410

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 27/9

6:00 a.m.-9:24 p.m.

1 stop18h 24m

San Francisco

Sun 12/10

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

1 stop14h 15m

C$ 410

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 3/10

6:00 a.m.-9:24 p.m.

1 stop18h 24m

San Francisco

Mon 6/10

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

1 stop8h 55m

C$ 410

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sun 19/10

6:15 a.m.-9:24 p.m.

2 stops18h 09m

San Francisco

Fri 24/10

12:50 p.m.-5:15 a.m.

1 stop13h 25m

C$ 420

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 21 results
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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 64% of one-stop itineraries from Toronto Region of Waterloo Intl Airport to San Francisco on Cheapflights.

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.

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 11 September 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
3,091 reviews
Check prices

Entertainment

6.1

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

Food

6.2

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
3,091 reviews
WestJet
7.2
Good
3,091 reviews
Check prices

Entertainment

6.1

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

Food

6.2

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
10,000 reviews
WestJet
7.2
Good
3,091 reviews
Check prices

Entertainment

6.1

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

Food

6.2

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 54m. 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$ 288. Another airline that can offer you cheap pricing is Air Canada. WestJet is priced at 39% 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.

  • What is the cheapest month to book a flight from Toronto Region of Waterloo Intl Airport to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Toronto Region of Waterloo Intl Airport to San Francisco (average of C$ 276). Flying from Toronto Region of Waterloo Intl Airport to San Francisco in December is currently the most expensive (average of C$ 368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Alameda
Redwood City
Burlingame
San Bruno
South San Francisco
Scotts Valley
Belmont
Novato
Millbrae
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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 288AverageC$ 372FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 337AverageC$ 567FlexibilityNo 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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