Cheapest return flights from Kolkata to San Francisco in September from 523€

AirHint found the following cheapest return flights from Kolkata (CCU) to San Francisco (SFO) in September 2025 (see full year).

Return flights

01 Sep - 14 Sep Air India
10 Sep - 01 Oct Air India
30 Sep - 05 Oct Air India

Also check the deals for one-way flights from Kolkata to San Francisco in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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