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Cheap flights from San Francisco to Toronto from C$ 124

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YTO
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Francisco to Toronto are usually found in April or March, booked 10 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap 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 17 September 2025.

Round-trip from

C$ 347

One-way from

C$ 124

Popular in

December

Cheapest in

April

Average price

C$ 619

Good round-trip deal

C$ 468 or less

Good one-way deal

C$ 316 or less
30/9-30/10
  • 30/9-30/10
  • 3 total stops
  • 40h 00m total
  • San Francisco to Toronto
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22/10
  • 22/10
  • 1 total stop
  • 10h 44m total
  • San Francisco to Toronto
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Highest demand for flights based on searches. 11% potential increase in price (C$ 109 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% 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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Price to beat on a round-trip flight from San Francisco to Toronto (YTO).
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Price to beat on a one-way flight from San Francisco to Toronto (YTO).
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Find 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 17 September 2025.

Tue 30/97:30 a.m.SFO - YYZ
2 stops14h 01mMultiple Airlines
Thu 30/109:45 a.m.YYZ - SFO
1 stop25h 59mMultiple Airlines
Deal found 16/9C$ 347
Sat 25/1010:15 a.m.SFO - YYZ
1 stop11h 28mMultiple Airlines
Mon 27/109:30 p.m.YYZ - SFO
1 stop17h 42mMultiple Airlines
Deal found 16/9C$ 348
Tue 14/107:30 a.m.SFO - YYZ
2 stops19h 21mWestJet
Fri 17/109:00 a.m.YYZ - SFO
2 stops15h 24mWestJet
Deal found 17/9C$ 349
Sat 11/1012:50 p.m.SFO - YHM
1 stop8h 50mWestJet
Wed 15/106:00 a.m.YHM - SFO
1 stop8h 54mWestJet
Deal found 14/9C$ 349
Fri 10/1012:50 p.m.SFO - YYZ
2 stops14h 01mMultiple Airlines
Mon 20/109:45 a.m.YYZ - SFO
Nonstop5h 38mMultiple Airlines
Deal found 16/9C$ 351
Tue 7/107:30 a.m.SFO - YYZ
2 stops14h 01mMultiple Airlines
Wed 8/109:45 a.m.YYZ - SFO
Nonstop5h 38mMultiple Airlines
Deal found 16/9C$ 352
Mon 20/107:30 a.m.SFO - YYZ
2 stops14h 01mMultiple Airlines
Mon 27/109:45 a.m.YYZ - SFO
Nonstop5h 55mMultiple Airlines
Deal found 15/9C$ 354
Thu 13/111:00 p.m.SFO - YYZ
1 stop8h 26mMultiple Airlines
Sun 16/119:45 a.m.YYZ - SFO
Nonstop5h 55mMultiple Airlines
Deal found 17/9C$ 355
Thu 2/105:45 a.m.SFO - YYZ
1 stop21h 35mMultiple Airlines
Mon 6/1010:20 p.m.YYZ - SFO
2 stops16h 34mMultiple Airlines
Deal found 15/9C$ 356
Sat 11/1012:50 p.m.SFO - YHM
1 stop8h 50mWestJet
Sat 18/106:00 a.m.YHM - SFO
1 stop8h 54mWestJet
Deal found 15/9C$ 356
Thu 23/1012:50 p.m.SFO - YYZ
2 stops14h 01mWestJet
Thu 30/1010:15 p.m.YYZ - SFO
1 stop16h 57mWestJet
Deal found 16/9C$ 358
Mon 6/1010:15 a.m.SFO - YYZ
1 stop24h 23mMultiple Airlines
Mon 17/119:00 p.m.YYZ - SFO
1 stop15h 30mMultiple Airlines
Deal found 16/9C$ 360

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 629,999 searches. Data last updated 17 September 2025.
Use the filters below to find and compare flights from San Francisco to Toronto that are best for you.

Fly from

San Francisco

Fly to

Toronto

Route

Depart

Return

Price

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 6/3

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

1 stop13h 29m

Toronto Region of Waterloo Intl

Thu 12/3

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

1 stop8h 50m

C$ 370

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Tue 14/10

10:15 a.m.-11:59 p.m.

1 stop10h 44m

Hamilton

Tue 21/10

5:45 p.m.-9:30 a.m.

1 stop18h 45m

C$ 387

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Wed 8/10

12:50 p.m.-12:40 a.m.

1 stop8h 50m

Hamilton

Wed 15/10

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

1 stop8h 54m

C$ 388

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sat 11/10

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

2 stops19h 00m

Toronto Region of Waterloo Intl

Sun 19/10

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

2 stops18h 09m

C$ 402

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Wed 22/10

12:50 p.m.-12:40 a.m.

1 stop8h 50m

Hamilton

Mon 27/10

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

1 stop21h 02m

C$ 407

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Sat 11/10

12:50 p.m.-12:40 a.m.

1 stop8h 50m

Hamilton

Thu 16/10

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

1 stop18h 24m

C$ 407

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Thu 29/1

1:00 p.m.-1:22 p.m.

1 stop21h 22m

Hamilton

Tue 3/2

5:50 a.m.-12:10 p.m.

1 stop9h 20m

C$ 411

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Thu 23/10

12:50 p.m.-12:40 a.m.

1 stop8h 50m

Hamilton

Thu 30/10

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

1 stop21h 02m

C$ 417

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sat 11/10

12:50 p.m.-5:30 a.m.

2 stops13h 40m

Toronto Region of Waterloo Intl

Fri 24/10

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

1 stop18h 24m

C$ 424

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Wed 1/10

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

1 stop8h 55m

Toronto Region of Waterloo Intl

Tue 7/10

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

1 stop8h 54m

C$ 424

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 60 results
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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

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Toronto. Price data was last updated on 12 September 2025.

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 10 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 169). Flying from San Francisco to Toronto in July is currently the most expensive (average of C$ 258). 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 17 September 2025.

It’s typically best to fly out from San Francisco to Toronto in the afternoon. Doing so could potentially save you 23% on the flight price compared to flying in the morning, which is usually more expensive.

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 16 December 2024.

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

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 17 September 2025.

The most flights from SFO to YTO are scheduled on a Monday (25 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 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 one-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 67% of one-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 C$ 347.

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 Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 6h 53m.

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 Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 11m.

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 17 September 2025.
Check out reviews from past customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from San Francisco to Toronto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
365 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
365 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.7
Good
439 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,926 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,095 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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?

    Located just 19.0 km from the city centre, San Francisco is the airport most travellers will use when flying to Toronto from San Francisco. Booking flights from San Francisco (SFO) to Toronto should be relatively easy as there are 24 daily outbound flights to Toronto from 5 different airlines.

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

    For as low as C$ 429, WestJet can have you in Toronto from San Francisco in 8h 30m. Airlines will cover a distance of 3644 km. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from San Francisco to Toronto round-trip from C$ 256. Other airlines that can offer you cheap pricing are Air Transat, from C$ 298, and United Airlines, from C$ 314. Air Canada is currently priced 57% below the average price you’ll pay for this route.

  • 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 Air Canada (C$ 232), Delta (C$ 235), and WestJet (C$ 238).

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

    The most popular route from San Francisco to Toronto is San Francisco - Toronto Pearson Intl. You may also consider San Francisco - Toronto Island or San Francisco - Hamilton.

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

    The top 3 most reliable airlines when flying from San Francisco to Toronto are Porter Airlines (79%), Air Transat (79%) and Air Canada (68%).

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

    Looking at all options, your cheapest flight can be booked for C$ 195. While the most popular route (San Francisco - Toronto Pearson Intl) can be booked for C$ 286 on average, our data indicates C$ 564 when flying from San Francisco to Toronto.

  • 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 C$ 169). Flying from San Francisco to Toronto in July is currently the most expensive (average of C$ 258). 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

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Alternative routes for San Francisco to Toronto

See prices for flight routes from nearby airports that may be better suited for you.
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Las Vegas to Hamilton flights
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Las Vegas to Region of Waterloo Intl flights
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Top 5 airlines flying from San Francisco to Toronto

Discover the top 5 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 629,999 searches. Data last updated 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 256AverageC$ 674FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 298AverageC$ 646FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 314AverageC$ 960FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 319AverageC$ 442FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 399AverageC$ 554FlexibilityNo cancel feeOn-time52%
Search Porter Airlines 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 San Francisco to Toronto?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Toronto from San Francisco today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Toronto?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Francisco to Toronto.

Can Cheapflights find flights from San Francisco to Toronto with no change fees?

Certainly. Search results for flights to Toronto from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from San Francisco to Toronto become cheaper?

Yes, Cheapflights offers price alerts on San Francisco to Toronto flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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