Cheap flights from Canada to San Francisco from C$ 108

The cheapest month to fly to San Francisco from Canada is in January. Flight prices, which tend to average around C$ 463, are often lower during this time because this is during the off-season. The month of November is another great option to travel to San Francisco, with average flight prices from Canada averaging around C$ 491.

The cheapest day to depart from Canada to San Francisco is on a Thursday. Travellers who choose to depart for San Francisco on a Thursday will often find tickets for as low as C$ 722. On the other hand, Sunday is the most expensive day to depart from Canada because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,159.

Flying to San Francisco from Canada in the evening is the least expensive time of day to depart. momondo users have found prices as low as C$ 633 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 1,369.

Fly from Montreal Pierre Elliott Trudeau Intl to San Francisco for the best Canada - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Canada when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 581 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Canada for as low as C$ 504 on momondo.

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

Alaska Airlines, WestJet, and Air Canada are the most popular carriers operating from Canada to San Francisco

Air Canada, Porter Airlines and WestJet are the top three most popular airlines that fly to San Francisco from Canada according to our data. Air Canada is the first choice among our users, with 41% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 9 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 30% of flights between Canada and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday 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 24% of their flights experiencing any sort of delay.

70 flights are operational daily from Canada to San Francisco as of October 2026. The most popular departure time for this route is 10:00a.m., with 49% of flights per day taking off at noon.

As of October 2026, there are 490 flights per week flying from Canada to San Francisco. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.