AirHint found the following cheapest one-way flights from Kolkata (CCU) to San Francisco (SFO) in December 2025 (see full year).
One-Way flights
| 08 Dec | Air India | ||
| 15 Dec | Air India | ||
| 14 Dec | Air India | ||
| 05 Dec | Air India | ||
| 04 Dec | Air India | ||
| 17 Dec | IndiGo | ||
| 03 Dec | IndiGo | ||
| 13 Dec | Thai Lion Air | ||
| 23 Dec | IndiGo | ||
| 20 Dec | IndiGo |
Also check the deals for return flights from Kolkata to San Francisco in December.
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