Cheap flights from Calgary to San Francisco from C$ 178

The cheapest month to fly to San Francisco from Calgary is in October. Flight prices, which tend to average around C$ 278, are often lower during this time because this is during the off-season. The month of May is another great option to travel to San Francisco, with average flight prices from Calgary averaging around C$ 282.

The cheapest day to depart from Calgary 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$ 485. On the other hand, Monday is the most expensive day to depart from Calgary because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,101.

Flying to San Francisco from Calgary in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 491 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to San Francisco is at noon when prices are around C$ 1,262.

Fly from Calgary to San Francisco for the best Calgary - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 353 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Calgary for as low as C$ 249 on momondo.

There are 4 cabin classes available to choose from on Calgary 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 1% on your flight if you consider stops on a Calgary to San Francisco flight.

As of April 2026, prices for Calgary to San Francisco flights are approximately 5% cheaper when compared to flights at the same time last year.

WestJet, United Airlines, and Delta are the most popular carriers operating from Calgary to San Francisco

WestJet, Air Canada and United Airlines are the top three most popular airlines that fly to San Francisco from Calgary according to our data. WestJet is the first choice among our users, with 73% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 5 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 17% of flights between Calgary and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 150 minutes.

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Monday 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.

Vancouver (YVR) was the most common stop: 60% of momondo users choosing one-stop flights on this route connected there.

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of C$ 353.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 5h 39m.

Vancouver (YVR) has the shortest average layover time for this route: 2h 16m.

4 flights are operational daily from Calgary to San Francisco as of April 2026. The most popular departure time for this route is 10:00a.m., with 62% of flights per day taking off at noon.

The number of flights available between Calgary and San Francisco is 33 per week as of April 2026. The most frequent departure day is Tue, with 30% of weekly flights leaving on this day.