Cheap flights from Boston to San Francisco from ₹ 14,644

In general, January is the cheapest month to fly from Boston to San Francisco. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 32,236. 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 ₹ 32,997.

The cheapest day to depart from Boston 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 ₹ 36,705. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around ₹ 54,675.

The cheapest time of day to fly to San Francisco is in the evening when flights can be purchased for as low as ₹ 27,858. Flights in the afternoon are often more expensive, with an average ticket price of ₹ 65,800.

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 ₹ 37,054 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 ₹ 26,531 on momondo.

You could potentially save up to 25% on your flight if you consider stops on a Boston to San Francisco flight.

As of May 2026, prices for Boston to San Francisco flights are approximately 1% more expensive when compared to flights at the same time last year.

Historically, on average around 16% 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 177 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening 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. Sunday 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 13% of their flights experiencing any sort of delay.

30 flights are operational daily from Boston to San Francisco as of May 2026. The most popular departure time for this route is 20:00, with 50% of flights per day taking off at midday.

211 flights are operational weekly from Boston to San Francisco as of May 2026. The most popular departure day for this route is Sun, with 18% of flights per week taking off on this day.