Cheap flights from Kolkata to San Francisco from ₹ 56,049

In general, December 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 ₹ 94,594. If you aren’t able to travel to San Francisco during the month of December, then flying in November is also cheap. Prices for this month can be found on momondo for an average of ₹ 95,742.

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 ₹ 117,286 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 ₹ 70,587 on momondo.

You could potentially save up to 29% on your flight if you consider stops on a Kolkata to San Francisco flight.

As of September 2026, prices for Kolkata to San Francisco flights are approximately 26% cheaper when compared to flights at the same time last year.

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

Singapore Airlines, Emirates and Qatar Airways are the top three most popular airlines that fly to San Francisco from Kolkata according to our data. Singapore Airlines is the first choice among our users, with 43% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 3 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 39% 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 138 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night 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. Wednesday 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 39% of their flights experiencing any sort of delay.

New Delhi (DEL) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via New Delhi (DEL) offer the lowest average return price of ₹ 81,562.

Flights connecting via Doha (DOH) have the shortest average one-way travel time: 22h 05m.

Doha (DOH) has the shortest average stopover time for this route: 1h 33m.

As of September 2026, there are 1 flights per day flying from Kolkata to San Francisco. The most common time of day flights depart is 04:00, with 100% of flights taking off in the morning.

As of September 2026, there are 7 flights per week flying from Kolkata to San Francisco. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.