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$141+ Cheap flights from Toronto (YTO) to San Francisco (SFO)

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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — SFO
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Toronto to San Francisco are usually found in April or March, booked 67 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Toronto to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Toronto (YTO) 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 junio 12, 2025.

Round-trip from

$236
(Trip.com)

One-way from

$141
(SmartFares)

Popular in

December

Cheapest in

April

Average price

$377

Good round-trip deal

$348 or less

Good one-way deal

$203 or less
From Toronto (YTO) to San Francisco
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One-way flight from Toronto (YTO) to San Francisco
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Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Toronto (YTO) to San Francisco.
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Price to beat on a one-way flight from Toronto (YTO) to San Francisco.
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Find flight deals from Toronto to San Francisco

Cheapest flights from Toronto to San Francisco
Explore the most affordable flight options available from Toronto to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/116:00 amYHM - SFO
1 stop8h 56mWestJet
mié. 8/1312:50 pmSFO - YHM
1 stop8h 51mWestJet
Deal found 6/10$236
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/2611:40 amYYZ - SFO
1 stop12h 47mAmerican Airlines
sáb. 7/55:41 amSFO - YYZ
1 stop14h 14mAmerican Airlines
Deal found 6/12$284
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/216:30 amYYZ - SFO
1 stop10h 27mWestJet
mar. 10/77:30 amSFO - YYZ
1 stop8h 22mWestJet
Deal found 6/10$285
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/247:45 pmYKF - SFO
2 stops21h 14mWestJet
dom. 8/37:30 amSFO - YKF
1 stop14h 16mWestJet
Deal found 6/10$286
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
sáb. 9/279:45 amYYZ - SFO
Nonstop5h 38mMultiple Airlines
sáb. 10/257:30 amSFO - YYZ
1 stop8h 22mMultiple Airlines
Deal found 6/11$291
This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/223:25 pmYTZ - SFO
1 stop9h 12mAir Canada
mié. 12/38:40 amSFO - YTZ
1 stop10h 10mAir Canada
Deal found 6/10$300
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/98:25 pmYKF - SFO
1 stop16h 05mFlair Airlines
mié. 7/1610:15 amSFO - YKF
1 stop17h 55mFlair Airlines
Deal found 6/11$304
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/233:00 pmYYZ - SFO
1 stop9h 37mAir Canada
sáb. 11/298:40 amSFO - YYZ
1 stop9h 05mAir Canada
Deal found 6/11$307
This Porter Airlines deal was found by Cheapflights users on 6/11. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/2910:30 amYYZ - SFO
Nonstop5h 52mPorter Airlines
mié. 11/51:30 pmSFO - YYZ
Nonstop5h 02mPorter Airlines
Deal found 6/11$319
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/245:50 pmYYZ - SFO
1 stop9h 05mDelta
vie. 7/1112:50 amSFO - YYZ
1 stop8h 09mDelta
Deal found 6/10$328
This Trip.com deal was found by Cheapflights users on 6/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/189:45 amYYZ - SFO
Nonstop5h 40mAir Transat
vie. 6/201:25 pmSFO - YYZ
Nonstop5h 04mAir Transat
Deal found 6/12$357
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/256:30 amYYZ - SFO
Nonstop5h 37mUnited Airlines
dom. 8/311:25 pmSFO - YYZ
1 stop7h 33mUnited Airlines
Deal found 6/10$370

Cheapflights Fare Finder

Customize your flight search to find flights from Toronto 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 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Toronto to San Francisco that are best for you.

Fly from

Toronto

Fly to

San Francisco

Route

Depart

Return

Price

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

lun. 8/11

6:00 am-11:56 am

1 stop8h 56m

San Francisco

mié. 8/13

12:50 pm-12:41 am

1 stop8h 51m

$236

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

jue. 6/26

11:40 am-9:27 pm

1 stop12h 47m

San Francisco

sáb. 7/5

5:41 am-10:55 pm

1 stop14h 14m

$284

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

dom. 9/21

6:30 am-1:57 pm

1 stop10h 27m

San Francisco

lun. 10/6

7:30 am-6:52 pm

1 stop8h 22m

$285

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

jue. 7/24

7:45 pm-1:59 pm

2 stops21h 14m

San Francisco

dom. 8/3

7:30 am-12:46 am

1 stop14h 16m

$286

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

sáb. 9/27

9:45 am-12:23 pm

Nonstop5h 38m

San Francisco

sáb. 10/25

7:30 am-6:52 pm

1 stop8h 22m

$291

TorontoSan Francisco

YTZ - SFO

YTZSFO

Toronto Island

sáb. 11/22

3:25 pm-9:37 pm

1 stop9h 12m

San Francisco

mié. 12/3

8:40 am-9:50 pm

1 stop10h 10m

$300

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

mié. 7/9

8:25 pm-9:30 am

1 stop16h 05m

San Francisco

mié. 7/16

10:15 am-7:10 am

1 stop17h 55m

$304

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

dom. 11/23

3:00 pm-9:37 pm

1 stop9h 37m

San Francisco

sáb. 11/29

8:40 am-8:45 pm

1 stop9h 05m

$307

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

mié. 10/29

10:30 am-1:22 pm

Nonstop5h 52m

San Francisco

mié. 11/5

1:30 pm-9:32 pm

Nonstop5h 02m

$319

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

mar. 6/24

5:50 pm-11:55 pm

1 stop9h 05m

San Francisco

vie. 7/11

12:50 am-11:59 am

1 stop8h 09m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 33 results
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The best insider tips for Toronto to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Toronto to San Francisco trip
Airlines
Air Canada

Air Canada offers complimentary meals for all fare classes on international flights.


Air Canada’s Preferred Seats offer up to four inches of extra space in exit rows.

Read more about Air Canadaby Jessica Macdonald
Porter Airlines

PorterReserve offers early boarding and front-of-cabin seating with extra legroom (36 inches).


Porter flights feature free Wi-Fi and streaming entertainment for long-haul use on personal devices.

Read more about Porter Airlinesby Daniel Scheffler
Air Transat

Air Transat's Club Class includes priority check-in, boarding, and extra baggage allowance.


Air Transat offers in-flight entertainment with 200 content options on seatback screens or personal devices.

Read more about Air Transatby Miquel Ros
United Airlines

United's Polaris Class offers lie-flat seats, noise-reducing headphones, and large entertainment screens.


United's Premium Plus seats offer extra legroom, upgraded food, and two checked bags.

Read more about United Airlinesby Harriet Baskas
Airports
YYZ

Toronto Pearson offers fast and reliable Wi-Fi throughout the airport, perfect for staying connected before your flight.

Read more about YYZby Kaitlyn McInnis
SFO

For a budget-friendly trip to downtown, take BART from SFO. It’s a 40-minute ride to the city center.

Read more about SFOby Harriet Baskas
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

Jessica Macdonald

Jessica Macdonald

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

Daniel Scheffler

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

Miquel Ros

Miquel Ros

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
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

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
Kaitlyn McInnis

Kaitlyn McInnis

Expert on YYZ

Kaitlyn McInnis

Kaitlyn McInnis

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

Best time to book a flight from Toronto to San Francisco

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

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

Use this chart to determine the optimal time to book a round-trip flight from Toronto to San Francisco. Price data was last updated on June 9, 2025.

The price you pay for your flight from Toronto to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 67 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 Toronto to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Toronto to San Francisco (average of $276). Flying from Toronto to San Francisco in June is currently the most expensive (average of $364). 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 YTO to SFO?

Find hourly flight availability from Toronto to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

One of the essential ways to save on airfare from Toronto to San Francisco is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 55% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Toronto to San Francisco. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Toronto to San Francisco

Explore weekly flight availability from Toronto to San Francisco. 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 junio 12, 2025.

The most flights from YTO to SFO are scheduled on a Wednesday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 junio 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Porter Airlines and Delta from Toronto to San Francisco by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Porter Airlines
8.0
Very good
288 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Air Transat
7.8
Good
396 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Toronto 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?

    Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Toronto. Booking flights from Toronto to San Francisco (SFO) should be relatively easy as there are 22 daily inbound flights from Toronto from 7 different airlines.

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

    Flying on WestJet is currently your cheapest option to San Francisco, with prices starting at $236. Additional round-trip tickets that might be worth considering are offered by American Airlines and Air Canada, with the lowest prices starting at $288 and $300, respectively. WestJet is priced at 39% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $141. However, be on the lookout for offers from American Airlines and Air Canada, as they are both options that can get you from Toronto to San Francisco for a low price.

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

    While some choose either Toronto Region of Waterloo Intl - San Francisco or Hamilton - San Francisco, Toronto Pearson Intl - San Francisco is the most popular route from Toronto to San Francisco.

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

    Consider Porter Airlines (90%), Air Transat (90%) or United Airlines (79%) when booking your flight. These represent the most reliable airlines when flying from Toronto to San Francisco.

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

    Looking for the cheapest flight from Toronto to San Francisco? While on average our users pay $1,962, our data indicates the cheapest price to be $159. The most popular route (Toronto Pearson Intl - San Francisco), is priced around $259.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Toronto to San Francisco (average of $276). Flying from Toronto to San Francisco in June is currently the most expensive (average of $364). 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

Traveling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Turlock
Santa Cruz
Manteca
Fairfield
Watsonville
Antioch
Hollister
Milpitas
Newark
Hayward
Alameda
Sunnyvale
Daly City
Union City
Campbell
Capitola

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Toronto to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Toronto to San Francisco

Discover the top 7 airlines that operate flights from Toronto 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 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$174Average$282FlexibilityNo cancel feeOn-time60%
Porter AirlinesCheapest$250Average$456FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$265Average$374FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$267Average$399FlexibilityNo cancel feeOn-time67%
DeltaCheapest$308Average$466FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$309Average$504FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$319Average$496FlexibilityNo cancel feeOn-time71%

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