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$145+ Cheap flights from San Francisco (SFO) to Toronto (YTO)

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YTO
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
1 adult, Economy
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Find cheap flights from San Francisco to Toronto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from San Francisco to Toronto are usually found in January or February, booked 70 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from San Francisco to Toronto

Cheapest flights from San Francisco to Toronto
Explore the most affordable flight options available from San Francisco to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am
SFO
-
YYZ
2 stops12h 35m
Multiple Airlines
Tue 10/209:45 am
YYZ
-
SFO
Nonstop5h 35m
Multiple Airlines
Deal found 7/19$290
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am
SFO
-
YYZ
2 stops12h 35m
WestJet
Mon 10/196:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/19$292
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:00 am
SFO
-
YYZ
2 stops10h 55m
WestJet
Wed 10/216:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/16$293
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am
SFO
-
YYZ
2 stops12h 35m
WestJet
Wed 10/2110:50 am
YYZ
-
SFO
1 stop8h 50m
WestJet
Deal found 7/19$294
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am
SFO
-
YYZ
2 stops12h 35m
WestJet
Sun 10/186:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/19$296
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:00 am
SFO
-
YYZ
2 stops10h 55m
WestJet
Sat 10/246:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/16$297
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am
SFO
-
YYZ
2 stops12h 35m
WestJet
Tue 10/206:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/20$298
This Justfly.com deal was found by Cheapflights users on 7/18. 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 8/146:00 am
SFO
-
YYZ
2 stops12h 10m
WestJet
Thu 8/209:00 am
YYZ
-
SFO
1 stop10h 40m
WestJet
Deal found 7/18$299
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:00 am
SFO
-
YYZ
2 stops12h 10m
WestJet
Wed 8/266:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/18$300
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:00 am
SFO
-
YYZ
2 stops12h 35m
WestJet
Wed 8/196:00 am
YYZ
-
SFO
1 stop9h 00m
WestJet
Deal found 7/16$301
This Justfly.com deal was found by Cheapflights users on 7/16. 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.
Wed 8/266:00 am
SFO
-
YYZ
1 stop9h 55m
WestJet
Mon 8/3110:00 am
YYZ
-
SFO
1 stop9h 40m
WestJet
Deal found 7/16$302
This oojo deal was found by Cheapflights users on 7/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:00 am
SFO
-
YKF
1 stop10h 50m
WestJet
Sun 10/48:40 pm
YKF
-
SFO
1 stop18h 20m
WestJet
Deal found 7/16$359

Find flight deals from San Francisco to Toronto

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Toronto (YTO). 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 July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$290
(Kiwi.com)

One-way from

$145
(Super.com)

Popular in

December

Cheapest in

January

Average price

$587

Good round-trip deal

$521 or less

Good one-way deal

$247 or less
Provider with most accurate pricing for San Francisco-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Toronto (YTO) flights.
Search Deals
From San Francisco to Toronto (YTO)
Search Deals
One-way flight from San Francisco to Toronto (YTO)
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from San Francisco to Toronto (YTO).
Search Deals
Price to beat on a one-way flight from San Francisco to Toronto (YTO).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Toronto 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 July 21, 2026.
Use the filters below to find and compare flights from San Francisco to Toronto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 10/16

6:00 am-7:50 pm

1 stop10h 50m

Toronto Region of Waterloo Intl

Sun 10/18

8:40 pm-12:00 pm

1 stop18h 20m

$363

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Tue 9/22

6:00 am-7:50 pm

1 stop10h 50m

Toronto Region of Waterloo Intl

Tue 9/29

8:40 pm-12:00 pm

1 stop18h 20m

$369

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Wed 9/23

6:05 pm-7:50 pm

1 stop22h 45m

Toronto Region of Waterloo Intl

Sat 9/26

8:40 pm-12:00 pm

1 stop18h 20m

$417

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Sun 8/23

6:00 am-5:15 pm

1 stop8h 15m

Hamilton

Tue 8/25

6:10 pm-12:00 pm

1 stop20h 50m

$417

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Wed 9/23

11:42 am-7:50 pm

2 stops29h 08m

Toronto Region of Waterloo Intl

Sat 9/26

8:40 pm-12:00 pm

1 stop18h 20m

$418

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Mon 8/24

6:00 am-7:50 pm

1 stop10h 50m

Toronto Region of Waterloo Intl

Thu 8/27

8:40 pm-12:00 pm

1 stop18h 20m

$431

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Thu 9/10

6:00 am-7:50 pm

1 stop10h 50m

Toronto Region of Waterloo Intl

Sun 9/13

8:40 pm-12:00 pm

1 stop18h 20m

$435

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Thu 10/15

6:00 am-5:15 pm

1 stop8h 15m

Hamilton

Mon 10/19

6:10 pm-12:00 pm

1 stop20h 50m

$435

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Tue 8/11

6:00 am-7:50 pm

1 stop10h 50m

Toronto Region of Waterloo Intl

Tue 8/25

8:40 pm-12:00 pm

1 stop18h 20m

$447

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Wed 9/16

6:05 pm-3:00 pm

1 stop17h 55m

Toronto Region of Waterloo Intl

Sun 9/20

8:40 pm-12:00 pm

1 stop18h 20m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from San Francisco to Toronto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Toronto in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
GotogatePrice Accuracy2 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
JetabroadPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Toronto 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Toronto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Toronto 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 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 Toronto

Have a flexible travel schedule? Discover the best time to fly to Toronto 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

What is the cheapest month to book a flight from San Francisco to Toronto?

Currently, January is the cheapest month in which you can book a flight from San Francisco to Toronto (average of $387). Flying from San Francisco to Toronto in December is currently the most expensive (average of $636). 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.

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

Find hourly flight availability from San Francisco to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 21, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 27% on flights from San Francisco to Toronto by exploring options for tickets at noon.

Weekly flight availability from San Francisco to Toronto

Explore weekly flight availability from San Francisco to Toronto. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 21, 2026.

The most flights from SFO to YTO are scheduled on a Monday (24 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (23 on average).

How much does it cost to fly round-trip from San Francisco to Toronto?

What’s the top layover airport for flights from San Francisco to Toronto?

Share of 1-stop round-trip flights from San Francisco to Toronto chosen by Cheapflights users in the past 12 months, using the same layover each way.

Calgary (YYC) – chosen by Cheapflights users on 85% of 1-stop itineraries from San Francisco to Toronto on Cheapflights.

What’s the cheapest layover airport for flights from San Francisco to Toronto?

Average round-trip fare for 1-stop flights from San Francisco to Toronto, 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 $340.

What’s the fastest layover option from San Francisco to Toronto?

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

Flights via Salt Lake City (SLC) have the shortest average one-way travel time for 1-stop routes: 7h 50m.

Which airport typically offers the quickest layover for flights from San Francisco to Toronto?

Average layover duration for 1-stop one-way flights from San Francisco to Toronto, 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 47m.

How far ahead should I book a flight from San Francisco to Toronto?

The price you pay for your flight from San Francisco to Toronto may vary depending on when you book. For the best chance of a lower fare, look to book 78 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from San Francisco to Toronto?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Toronto. Price data was last updated on July 18, 2026.

Travelers seeking maximum savings on their San Francisco to Toronto flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for San Francisco to Toronto flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Toronto trip
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Porter Airlines

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Miquel Ros

Miquel Ros

Expert on Air Transat

Originally from Barcelona, Miquel is an avid traveler fascinated by borders and airplanes, two topics that feature often in this work. Miquel writes regularly about travel and aviation for international media outlets such as CNN and AeroTime and runs Allplane.tv, a site and podcast focusing on innovation and sustainability in the aviation industry.

Read more
Kaitlyn McInnis

Kaitlyn McInnis

Expert on YYZ

Kaitlyn is a guidebook author and travel writer splitting her time between Atlantic Canada and Istanbul, Türkiye. She has visited over fifty countries and all seven continents, so she is very familiar with many hotels, airports and airlines around the globe. But her favorite type of vacation is sunbathing by the sea with a good book in hand.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Reviews of airlines servicing Toronto

Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated July 21, 2026.
Read through reviews of airlines operating flights from San Francisco to Toronto, such as Porter Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
448 reviews

Comfort

8.0

Overall

8.0

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
448 reviews
Porter Airlines
8.0
Very good
448 reviews

Comfort

8.0

Overall

8.0

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Delta
7.8
Good
8,472 reviews
Porter Airlines
8.0
Very good
448 reviews

Comfort

8.0

Overall

8.0

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,014 reviews
Porter Airlines
8.0
Very good
448 reviews

Comfort

8.0

Overall

8.0

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
WestJet
7.2
Good
3,411 reviews
Porter Airlines
8.0
Very good
448 reviews

Comfort

8.0

Overall

8.0

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,363 reviews
Porter Airlines
8.0
Very good
448 reviews

Comfort

8.0

Overall

8.0

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Toronto. 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?

    San Francisco (SFO), located 11.0 mi from the city center, is the airport you fly out of when you book flights from San Francisco to Toronto. 8 airlines have flights from San Francisco to Toronto on a regular basis. Booking flights from San Francisco to Toronto should not be difficult; the airport handles an average of 23 outbound flights to Toronto per day.

  • How long is the flight from San Francisco to Toronto?

    WestJet, Delta, and Porter Airlines can get you from San Francisco to Toronto in just under 5h 05m. Your travel time can differ by up to 5h 45m. There are 2253 mi between San Francisco and Toronto. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Francisco to Toronto round-trip?

    Our cheapest airline available from San Francisco to Toronto is WestJet. Our recent data shows that you can find tickets from as low as $143 on this airline. Additional options worth looking into are Air Transat and Porter Airlines, starting at $160 and $163 round-trip. You may be able to fly from San Francisco to Toronto for 71% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Francisco to Toronto one-way?

    The cheapest airlines for a one-way flight from San Francisco to Toronto are WestJet ($104), Flair Airlines ($120), and Porter Airlines ($137).

  • What are the most popular routes from San Francisco to Toronto?

    Most travelers choose San Francisco - Toronto Pearson Intl, San Francisco - Toronto Island or San Francisco - Hamilton when deciding on the best route from San Francisco to Toronto.

  • What are the most reliable airlines from San Francisco to Toronto?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Toronto on time: Brussels Airlines (82%), Singapore Airlines (66%), Austrian Airlines (65%).

  • What are the cheapest flights from San Francisco to Toronto?

    While on average a flight from San Francisco to Toronto is generally $1,268, our data shows the cheapest flight currently is $193. When looking at the most popular route, (San Francisco - Toronto Pearson Intl), you can expect to pay $302 for that flight.

  • Can I find deals for flights from San Francisco to Toronto that include hotel bookings?

    Yes. In addition to deals on San Francisco to Toronto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Toronto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Toronto.

  • Can I find deals for business class flights from San Francisco to Toronto?

    Yes. Cheapflights offers flight deals from San Francisco to Toronto 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 San Francisco to Toronto?

    Currently, January is the cheapest month in which you can book a flight from San Francisco to Toronto (average of $387). Flying from San Francisco to Toronto in December is currently the most expensive (average of $636). 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

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.

Top 8 airlines flying from San Francisco to Toronto

Discover the top 8 airlines that operate flights from San Francisco to Toronto. 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 2,558,603 searches. Data last updated July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$143Average$318FlexibilityNo cancel feeOn-time60%
Air TransatCheapest$160Average$503FlexibilityNo cancel feeOn-time50%
Porter AirlinesCheapest$163Average$406FlexibilityNo cancel feeOn-time52%
DeltaCheapest$202Average$430FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$209Average$540FlexibilityNo cancel feeOn-time67%
Qatar AirwaysCheapest$338Average$404FlexibilityNo cancel feeOn-time68%
United AirlinesCheapest$416Average$628FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$454Average$621FlexibilityNo cancel feeOn-time71%

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