Cheap flights from Boston to San Francisco from R3 032

If you’re not able to fly to San Francisco in January, then March is your next best option. Flight prices from Boston to San Francisco during March average around R6 658.

Fly from Boston Logan Intl to San Francisco for the best Boston Logan Intl - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around R7 059 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Boston for as low as R5 834 on momondo.

There is only 1 cabin class available to choose from on Boston to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Boston to San Francisco.

As of November 2026, prices for Boston to San Francisco flights are approximately 13% cheaper when compared to flights at the same time last year.

Historically, on average around 23% of flights between Boston and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 169 minutes.

Generally, flights departing at night 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 have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

As of November 2026, there are 25 flights per day flying from Boston to San Francisco. The most common time of day flights depart is 7:00, with 53% of flights taking off at midday.

179 flights are operational weekly from Boston to San Francisco as of November 2026. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.