Cheap flights from Kolkata to San Francisco from ₹ 47,829

In general, November is the cheapest month to fly from Kolkata to San Francisco. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 84,564. If you aren’t able to travel to San Francisco during the month of November, then flying in June is also cheap. Prices for this month can be found on momondo for an average of ₹ 87,201.

You are more likely to see cheaper flights to San Francisco from Kolkata when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around ₹ 108,160 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 Kolkata for as low as ₹ 76,017 on momondo.

You could potentially save up to 18% on your flight if you consider stops on a Kolkata to San Francisco flight.

As of February 2026, prices for Kolkata to San Francisco flights are approximately 20% cheaper when compared to flights at the same time last year.

Qatar Airways and Emirates are the most popular carriers operating from Kolkata Netaji S. Chandra to San Francisco

Air India, Singapore Airlines and Qatar Airways are the top three most popular airlines that fly to San Francisco from Kolkata according to our data. Air India is the first choice among our users, with 40% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 5 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 34% of flights between Kolkata and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 199 minutes.

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

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Air India have had the fewest delays on this route over the last 12 months, with about 34% of their flights experiencing any sort of delay.