Cheap flights from California to San Francisco from $28

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 $195.

The cheapest day to depart from California to San Francisco is on a Friday when prices can be found for as low as $234. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $350.

Our data shows that the cheapest California to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $223. Flights at noon are often more expensive with an average ticket price of $303.

Fly from Ontario to San Francisco for the best California - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from California when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $215 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from California for as low as $126 on momondo.

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

United Airlines, Southwest, and Alaska Airlines are the most popular carriers operating from California to San Francisco

Southwest, United Airlines and Alaska Airlines are the top three most popular airlines that fly to San Francisco from California according to our data. Southwest is the first choice among our users, with 28% of people opting to fly with this airline when traveling 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.

272 flights are operational daily from California to San Francisco as of August 2026. The most popular departure time for this route is 6:00PM, with 39% of flights per day taking off at noon.

As of August 2026, there are 1,908 flights per week flying from California to San Francisco. The most common day of the week flights depart is Fri, with 25% of flights taking off on this day.