Cheap flights from Toronto to San Francisco from C$ 256

The cheapest month to fly to San Francisco from Toronto is in November. Flight prices, which tend to average around C$ 480, are often lower during this time because this is during the off-season. The month of October is another great option to travel to San Francisco, with average flight prices from Toronto averaging around C$ 489.

The cheapest day to depart from Toronto to San Francisco is on a Friday. Travellers who choose to depart for San Francisco on a Friday will often find tickets for as low as C$ 807. On the other hand, Sunday is the most expensive day to depart from Toronto because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,224.

Flying to San Francisco from Toronto in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 797 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to San Francisco is in the evening when prices are around C$ 1,375.

Fly from Toronto Pearson Intl to San Francisco for the best Toronto - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 551 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Toronto for as low as C$ 489 on momondo.

There are 4 cabin classes available to choose from on Toronto to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 20% on your flight if you consider stops on a Toronto to San Francisco flight.

As of June 2026, prices for Toronto to San Francisco flights are approximately 23% more expensive when compared to flights at the same time last year.

WestJet and United Airlines are the most popular carriers operating from Toronto to San Francisco

Porter Airlines, Air Canada and United Airlines are the top three most popular airlines that fly to San Francisco from Toronto according to our data. Porter Airlines is the first choice among our users, with 45% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 8 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between Toronto and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 160 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines has had the least delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

Calgary (YYC) was the most common stop: 77% of momondo users choosing one-stop flights on this route connected there.

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 383.

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 8h 34m.

Montreal (YUL) has the shortest average layover time for this route: 1h 23m.

The number of flights available between Toronto and San Francisco is 18 per day as of June 2026. The most frequent departure time is 6:00p.m., with 55% of daily flights leaving at noon.

As of June 2026, 131 flights take off from Toronto and land in San Francisco each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.