Lowest fares from Toronto to San Francisco
What to know before you book Toronto to San Francisco
Toronto to San Francisco is a busy business and tech route, with nonstop flights on Air Canada, Porter and United. Weekday morning flights fill with business travellers, so leisure fares are often lower on Tuesdays, Wednesdays and Saturdays.
Compare Oakland and San José
San Francisco International (SFO) gets the nonstops, but Oakland (OAK) and San José (SJC) are both close and sometimes cheaper with one stop. If you're staying in the East Bay or Silicon Valley, they can also be closer.
US preclearance at Pearson
You clear US customs and immigration in Toronto before you board, so you land in San Francisco as a domestic passenger and can walk straight out. Leave extra time at Pearson for preclearance, especially in the morning rush.
Getting into the city
BART trains run from SFO to downtown San Francisco in about 30 minutes, usually far cheaper than a taxi or ride-share.
Written by the Viorvo team · Updated October 2026. Airline schedules and entry rules change, so check before you book.
Toronto to San Francisco at a glance
- Nonstop flights
- Air Canada, Porter and United
- Flying time
- About 5h 30m nonstop
- Distance
- 3,644 km
- Leaving from
- Toronto Pearson (YYZ)
- Arriving at
- San Francisco (SFO), Oakland (OAK) and San José (SJC)
- Time difference
- San Francisco is about 3 hours behind Toronto (this can shift by an hour when clocks change).
- Cheapest time
- January and February are usually cheapest.
- Entry for Canadians
- Canadian citizens don't need a visa for tourist trips to the US, but a valid passport is required to fly. Rules change, so confirm on the Government of Canada's travel advice page before you book.
Nonstop airlines are based on each airport's published routes (September 2026). Schedules change, so always check your dates.
Cheapest month to fly Toronto to San Francisco
Lowest one-way fare in Canadian dollars (CAD) found in recent searches for each month. Round trips usually cost a bit less than two one-way tickets. Tap a month to search it.
Toronto to San Francisco fares in our daily checks
We check the cheapest one-way fare from Toronto to San Francisco every morning. We have 19 days of results so far, from Oct 23, 2026 to Nov 10, 2026. In Canadian dollars:
- Lowest fare we saw
- $235 one way, on Oct 23, 2026 (for travel in November 2026)
- Typical daily low
- $235 to $259: the middle half of each day's cheapest fare
- Latest check
- $259 on Nov 10, 2026
- Cheapest travel month so far
- March 2027 (median $254 over 14 days); priciest: December 2026 (median $379)
- Airlines selling these fares
- Porter Airlines Canada, WestJet, Air Canada, Flair Airlines
- Stops on the cheapest fare
- Usually nonstop (19 of 19 days)
From Viorvo's own daily price checks (Travelpayouts fare data). These are the lowest one-way fares found in searches that day, not a quote, and they can be gone by the time you search. How we work these out.
How these figures are worked out, and what they are not: our data and method.
How to fly Toronto to San Francisco for less
- Compare nonstop with one-stop. Nonstop on this route: Air Canada, Porter and United. One-stop fares are sometimes cheaper, but check how much time they add before you choose.
- Be flexible by a few days. Use the month chart and the Viorvo price calendar to see which days are cheapest; midweek departures are often lower.
- Compare airports on both ends. Buffalo (BUF), across the border, is sometimes much cheaper for US trips, and Hamilton (YHM), about an hour away, has budget flights too.
- Getting to the airport in Toronto: The UP Express train runs from Pearson to Union Station in about 25 minutes, usually far cheaper than a taxi.
- Arriving in San Francisco: Compare Oakland and San José too. BART runs from SFO into the city for far less than a taxi.
- Check what's included. The cheapest fares often exclude checked bags and seat selection, so compare the total price for your trip.
Free tools: Will my bag fit? Carry-on size checker · Flight delayed? See what you're owed
Power in United States: Type A, B, 120 V; Canadian plugs fit. Which adapter to pack · Flight packing list
Everything else for San Francisco
Our guides: San Francisco travel hub · Travel insurance for the US
Get the cheapest fares from Toronto, weekly
One short email a week, only when we find a real deal from Toronto, to San Francisco or anywhere else. Every fare is re-checked live before we send it. No spam, unsubscribe any time.
The seven steps we use to tell a good fare from a bad one, plus a before-you-pay checklist. Chapter 1 of our Cheap Flights from Canada Playbook.
Toronto to San Francisco flights: common questions
How much is a flight from Toronto to San Francisco?
In recent searches, round trips from Toronto to San Francisco started at $632 and one-way fares started at $284. Fares change daily, so check the fares board above for the latest prices and dates.
Is there a direct flight from Toronto to San Francisco?
Yes. Nonstop flights between Toronto and San Francisco: Air Canada, Porter and United. Schedules change, so the fares board above shows what's available for your dates.
How long is the flight from Toronto to San Francisco?
A nonstop flight covers about 3,644 km and takes roughly 5h 30m. With one connection, the whole trip usually takes about 7 to 9 hours depending on the layover.
Which airlines fly nonstop from Toronto to San Francisco?
Air Canada, Porter and United fly nonstop from Toronto Pearson to San Francisco. Schedules change, so check your dates.
When is the cheapest time to fly from Toronto to San Francisco?
January and February are usually cheapest. The month chart above shows the cheapest months in recent searches.
Which airports serve San Francisco?
San Francisco is served by San Francisco (SFO), Oakland (OAK) and San José (SJC). Comparing every airport is one of the easiest ways to find a cheaper fare.
What do Canadians need to travel to San Francisco?
Canadian citizens don't need a visa for tourist trips to the US, but a valid passport is required to fly. Rules change, so confirm on the Government of Canada's travel advice page before you book.
Is it cheaper to fly into Oakland or San José instead of San Francisco?
Sometimes. Oakland and San José usually need one stop from Toronto, but the fare can be lower, and they're closer if you're staying in the East Bay or Silicon Valley.
What's the time difference between Toronto and San Francisco?
San Francisco is about 3 hours behind Toronto (this can shift by an hour when clocks change).
How much have Toronto to San Francisco fares varied in your price checks?
In 19 days of daily checks (from Oct 23, 2026 to Nov 10, 2026), the cheapest one-way fare on a typical day was between $235 and $259 and the lowest we saw was $235. March 2027 has been the cheapest travel month so far.
What's the cheapest month to fly from Toronto to San Francisco?
See the month chart above for the cheapest month in recent searches. As a rule of thumb: January and February are usually cheapest.