Kolkata→San FranciscoNonstop Flight TimeCCU–SFO

Kolkata (Netaji Subhas Chandra Bose International Airport) to San Francisco (San Francisco International Airport).

Direct flights from CCU to SFO have an estimated flight time of about 16h 43m, based on the 7,816-mile great-circle distance. Our current captured departure sample includes 1/day across 1 captured airline, with Air India appearing most often in that sample. Captured departure times run from 04:20 to 04:20 local time.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for CCU to SFO, last seen June 15, 2026. Frequency uses 7 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.