AirHint found the following cheapest return flights from Kolkata (CCU) to San Francisco (SFO) in December 2026 (see full year).
Return flights
| 16 Dec - 05 Jan | Singapore Airlines | ||
| 18 Dec - 07 Jan | Singapore Airlines | ||
| 01 Dec - 28 Dec | Emirates | ||
| 18 Dec - 25 Dec | Emirates |
Also check the deals for one-way flights from Kolkata to San Francisco in December.
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