Cheap flights from Kolkata to San Francisco from ₹ 45,914

To ensure you get the cheapest price possible for a flight from Kolkata to San Francisco, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Currently, October is the cheapest month in which you can book a flight from Kolkata to San Francisco (average of ₹ 21,720). Flying from Kolkata to San Francisco in August is currently the most expensive (average of ₹ 102,826). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

About 34% of weekly flights between Kolkata and San Francisco have experienced delays in the past year, with the average delay time being 199 minutes.

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

Friday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Over the past year, Air India have had the lowest number of delays on this route, with just 34% of flights being delayed.

Singapore (SIN) – chosen by Cheapflights users on 36% of one-stop itineraries from Kolkata to San Francisco on Cheapflights.

Mumbai (BOM) is the most affordable one-stop option, with an average return flight price of ₹ 149,337.

Flights via Doha (DOH) have the shortest average one-way travel time for one-stop routes: 22h 19m.

Flights via Doha (DOH) offer the fastest connection on this route, with an average stopover time of 1h 21m.