Find flights
When to book
Airlines
FAQs

Cheap flights from Toronto Region of Waterloo Intl Airport to San Francisco from C$ 247

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
25 Feb — 4 Mar1
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 26 January 2026.

Thu 23/46:20 a.m.
YKF
-
SFO
1 stop8h 50m
WestJet
Fri 24/41:00 p.m.
SFO
-
YKF
1 stop13h 29m
WestJet
Deal found 25/1C$ 357
Thu 21/56:00 a.m.
YKF
-
SFO
1 stop8h 54m
WestJet
Mon 25/512:50 p.m.
SFO
-
YKF
1 stop8h 55m
WestJet
Deal found 24/1C$ 373
Tue 19/56:00 a.m.
YKF
-
SFO
1 stop8h 54m
WestJet
Wed 27/512:50 p.m.
SFO
-
YKF
1 stop8h 55m
WestJet
Deal found 24/1C$ 388
Thu 21/56:00 a.m.
YKF
-
SFO
1 stop8h 54m
WestJet
Tue 26/56:05 p.m.
SFO
-
YKF
1 stop27h 40m
WestJet
Deal found 24/1C$ 415
Sun 10/56:00 a.m.
YKF
-
SFO
1 stop8h 54m
WestJet
Fri 22/512:50 p.m.
SFO
-
YKF
1 stop8h 55m
WestJet
Deal found 23/1C$ 449
Wed 20/56:00 a.m.
YKF
-
SFO
1 stop8h 54m
WestJet
Tue 26/56:05 p.m.
SFO
-
YKF
1 stop27h 40m
WestJet
Deal found 24/1C$ 456
Thu 23/46:20 a.m.
YKF
-
SFO
1 stop8h 50m
WestJet
Mon 27/46:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 25/1C$ 503
Mon 23/26:20 a.m.
YKF
-
SFO
3 stops33h 00m
Multiple Airlines
Sun 1/310:15 a.m.
SFO
-
YKF
2 stops16h 14m
Multiple Airlines
Deal found 25/1C$ 511
Thu 23/46:20 a.m.
YKF
-
SFO
1 stop8h 50m
WestJet
Sun 26/41:00 p.m.
SFO
-
YKF
1 stop27h 50m
WestJet
Deal found 25/1C$ 523
Mon 11/56:00 a.m.
YKF
-
SFO
1 stop8h 54m
WestJet
Sat 23/512:50 p.m.
SFO
-
YKF
1 stop8h 55m
WestJet
Deal found 23/1C$ 527

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 26 January 2026.

Round-trip from

C$ 357

One-way from

C$ 259

Popular in

March

Cheapest in

October

Average price

C$ 511
WestJet
  • WestJet
  • 23/4-24/4
  • 2 total stops
  • 22h 19m total
  • Toronto to San Francisco
Search Deals
5/3
  • 5/3
  • 2 total stops
  • 42h 18m total
  • Toronto to San Francisco
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 29 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 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 26 January 2026.
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

Sun 10/5

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

1 stop8h 54m

San Francisco

Fri 22/5

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

1 stop8h 55m

C$ 449

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 23/4

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

1 stop8h 50m

San Francisco

Mon 27/4

6:00 a.m.-7:50 p.m.

1 stop10h 50m

C$ 503

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Mon 23/2

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

3 stops33h 00m

San Francisco

Sun 1/3

10:15 a.m.-5:29 a.m.

2 stops16h 14m

C$ 511

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Mon 11/5

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

1 stop8h 54m

San Francisco

Sat 23/5

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

1 stop8h 55m

C$ 527

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sun 17/5

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

1 stop8h 54m

San Francisco

Wed 27/5

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

1 stop8h 55m

C$ 534

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 26/2

6:20 a.m.-8:34 p.m.

2 stops17h 14m

San Francisco

Wed 4/3

7:30 a.m.-5:29 a.m.

2 stops18h 59m

C$ 619

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 4/4

7:00 p.m.-12:10 p.m.

1 stop20h 10m

San Francisco

Sun 12/4

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

1 stop13h 29m

C$ 623

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Tue 7/4

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

1 stop8h 50m

San Francisco

Sun 12/4

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

1 stop13h 29m

C$ 646

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 19/3

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

1 stop8h 50m

San Francisco

Wed 15/4

10:16 a.m.-5:29 a.m.

2 stops16h 13m

C$ 655

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 10/6

8:40 p.m.-9:55 p.m.

1 stop28h 15m

C$ 247

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/1

Showing 1-10 of 21 results
1
2
3

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 79% 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$ 439.

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 Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 8h 58m.

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 59m.

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 26 January 2026.
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
3,249 reviews
Check prices

Entertainment

6.1

Food

6.2

Overall

7.2

Boarding

7.4

Crew

7.9

Comfort

7.0

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
3,249 reviews
WestJet
7.2
Good
3,249 reviews
Check prices

Entertainment

6.1

Food

6.2

Overall

7.2

Boarding

7.4

Crew

7.9

Comfort

7.0

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
10,656 reviews
WestJet
7.2
Good
3,249 reviews
Check prices

Entertainment

6.1

Food

6.2

Overall

7.2

Boarding

7.4

Crew

7.9

Comfort

7.0

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$ 197. Another airline that can offer you cheap pricing is Air Canada. WestJet is priced at 51% 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
Burlingame
South San Francisco
Scotts Valley
Novato
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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.
Pearson Intl to Las Vegas flights
Pearson Intl to Los Angeles flights
Pearson Intl to San Francisco flights
Toronto Island to Las Vegas flights
Pearson Intl to San Diego flights
Pearson Intl to Ontario flights
Toronto Island to Los Angeles flights
Hamilton to Las Vegas flights
Pearson Intl to Palm Springs flights
Toronto Island to San Francisco flights
Region of Waterloo Intl to Las Vegas flights
Pearson Intl to Santa Ana flights
Region of Waterloo Intl to Los Angeles flights
Hamilton to Los Angeles flights
Pearson Intl to Sacramento flights
Pearson Intl to San Jose flights
Hamilton to San Francisco flights
Pearson Intl to Oakland flights
Pearson Intl to Burbank flights
Hamilton to San Diego flights
Toronto Island to San Diego flights
Hamilton to Palm Springs flights
Pearson Intl to Fresno flights
Pearson Intl to Reno flights
Region of Waterloo Intl to Palm Springs flights
Region of Waterloo Intl to San Diego flights
Pearson Intl to Santa Barbara flights
Hamilton to Santa Ana flights
Pearson Intl to Tijuana flights
Pearson Intl to Redding flights
Pearson Intl to Long Beach flights
Hamilton to San Jose flights
Hamilton to Ontario flights
Pearson Intl to Santa Rosa flights
Pearson Intl to Medford flights
Region of Waterloo Intl to Sacramento flights
Pearson Intl to San Luis Obispo flights
Pearson Intl to Monterey flights
Hamilton to Sacramento flights
Region of Waterloo Intl to San Jose flights
Hamilton to Burbank flights

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 26 January 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 197AverageC$ 368FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 333AverageC$ 472FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.