Cheap flights from Calgary to San Francisco from $117

If you aren’t able to travel to San Francisco during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $203.

The cheapest day to depart from Calgary to San Francisco is on a Saturday when prices can be found for as low as $211. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $328.

Our data shows that the cheapest Calgary to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $166. Flights in the afternoon are often more expensive with an average ticket price of $280.

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 $238 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 $175 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.

WestJet and Air Canada are the most popular carriers operating from Calgary to San Francisco

WestJet, United Airlines and Air Canada 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 59% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 4 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 18% 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 147 minutes.

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

Tuesday is statistically the day of the week which experiences the fewest number of 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 have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

As of February 2026, there are 4 flights per day flying from Calgary to San Francisco. The most common time of day flights depart is 3:00PM, with 72% of flights taking off in the afternoon.

As of February 2026, there are 28 flights per week flying from Calgary to San Francisco. The most common day of the week flights depart is Thu, with 36% of flights taking off on this day.