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Cheap flights from Toronto Region of Waterloo Intl Airport to San Francisco from C$ 239

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SFO
10 Apr — 17 Apr1
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 11 March 2026.

Mon 11/58:40 p.m.
YKF
-
SFO
1 stop28h 15m
WestJet
Thu 14/51:00 p.m.
SFO
-
YKF
1 stop27h 50m
WestJet
Deal found 6/3C$ 512
Fri 8/58:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Mon 11/56:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 9/3C$ 517
Fri 22/58:40 p.m.
YKF
-
SFO
1 stop28h 15m
WestJet
Wed 27/56:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 8/3C$ 535
Fri 1/58:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Sat 9/51:00 p.m.
SFO
-
YKF
1 stop27h 50m
WestJet
Deal found 6/3C$ 540
Fri 1/58:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Fri 8/56:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 8/3C$ 546
Sun 31/58:40 p.m.
YKF
-
SFO
1 stop23h 00m
WestJet
Mon 8/66:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 7/3C$ 550
Sat 6/68:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Sun 14/66:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 8/3C$ 551
Mon 27/48:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Mon 4/56:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 9/3C$ 555
Fri 22/58:40 p.m.
YKF
-
SFO
1 stop28h 15m
WestJet
Sat 13/66:05 p.m.
SFO
-
YKF
1 stop22h 45m
WestJet
Deal found 9/3C$ 559
Fri 1/58:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Mon 11/56:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 10/3C$ 561
Sat 6/68:40 p.m.
YKF
-
SFO
1 stop28h 15m
WestJet
Sun 21/66:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 8/3C$ 562
Sat 13/68:40 p.m.
YKF
-
SFO
1 stop28h 15m
WestJet
Mon 22/66:05 p.m.
SFO
-
YKF
1 stop22h 45m
WestJet
Deal found 6/3C$ 563

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 11 March 2026.

Round-trip from

C$ 512

One-way from

C$ 239

Popular in

December

Cheapest in

April

Average price

C$ 539
WestJet
  • WestJet
  • 11/5-14/5
  • 2 total stops
  • 56h 05m total
  • Toronto to San Francisco
Search Deals
WestJet
  • WestJet
  • 22/5
  • 1 total stop
  • 18h 20m total
  • Toronto to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 11 March 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Mon 11/5

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

1 stop28h 15m

San Francisco

Thu 14/5

1:00 p.m.-7:50 p.m.

1 stop27h 50m

C$ 512

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 8/5

8:40 p.m.-12:00 p.m.

1 stop18h 20m

San Francisco

Mon 11/5

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

1 stop10h 50m

C$ 517

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 22/5

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

1 stop28h 15m

San Francisco

Wed 27/5

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

1 stop10h 50m

C$ 535

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 27/5

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

1 stop28h 15m

San Francisco

Sat 6/6

6:05 p.m.-7:50 p.m.

1 stop22h 45m

C$ 573

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Sat 13/6

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

1 stop28h 15m

San Francisco

Sat 20/6

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

1 stop10h 50m

C$ 577

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 1/5

8:40 p.m.-12:00 p.m.

1 stop18h 20m

San Francisco

Mon 4/5

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

1 stop10h 50m

C$ 596

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 10/6

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

1 stop28h 15m

San Francisco

Sun 14/6

6:05 p.m.-7:50 p.m.

1 stop22h 45m

C$ 600
Quickest round-trip

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Thu 16/4

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$ 660

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 8/5

8:40 p.m.-12:00 p.m.

1 stop18h 20m

San Francisco

Sun 10/5

1:00 p.m.-7:50 p.m.

1 stop27h 50m

C$ 665

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 6/5

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

1 stop28h 15m

San Francisco

Sat 9/5

1:00 p.m.-5:25 a.m.

2 stops13h 25m

C$ 673

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 23 resultsSorted by cheapest first
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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 88% 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$ 435.

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 51m.

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 11 March 2026.
Read through reviews of airlines operating flights from Toronto Region of Waterloo Intl Airport to San Francisco, such as WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,291 reviews
Check prices

Crew

7.9

Food

6.2

Entertainment

6.1

Overall

7.2

Comfort

7.0

Boarding

7.4

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
3,291 reviews
WestJet
7.2
Good
3,291 reviews
Check prices

Crew

7.9

Food

6.2

Entertainment

6.1

Overall

7.2

Comfort

7.0

Boarding

7.4

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. 1 airline 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 28h 15m. 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 is the cheapest airline to fly 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$ 302.

  • 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
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 airline flying from Region of Waterloo Intl to San Francisco

Discover the top airline 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 March 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 302AverageC$ 365FlexibilityNo cancel feeOn-time60%
Search WestJet 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.

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