Cheap flights from the United States to San Francisco from $49

If you aren’t able to travel to San Francisco during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $357.

The cheapest day to depart from United States to San Francisco is on a Thursday when prices can be found for as low as $404. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $573.

Our data shows that the cheapest United States 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 $388. Flights in the afternoon are often more expensive with an average ticket price of $483.

Fly from Denver Intl to San Francisco for the best United States - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $386 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from United States for as low as $342 on momondo.

There are 4 cabin classes available to choose from on United States 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 United States to San Francisco

United Airlines, Alaska Airlines and Frontier are the top three most popular airlines that fly to San Francisco from United States according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 12 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 19% of flights between United States and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 151 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening 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. Sunday 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 16% of their flights experiencing any sort of delay.

281 flights are operational daily from United States to San Francisco as of March 2026. The most popular departure time for this route is 7:00AM, with 38% of flights per day taking off at noon.

1,967 flights are operational weekly from United States to San Francisco as of March 2026. The most popular departure day for this route is Tue, with 24% of flights per week taking off on this day.