AirHint found the following cheapest return flights from Kolkata (CCU) to San Francisco (SFO) in May 2026 (see full year).
Return flights
| 10 May - 24 May | Emirates | ||
| 06 May - 13 May | IndiGo | ||
| 04 May - 01 Jun | Emirates | ||
| 22 May - 05 Jun | Emirates | ||
| 03 May - 31 May | Emirates | ||
| 01 May - 07 May | Emirates | ||
| 01 May - 09 May | Emirates | ||
| 19 May - 18 Jun | Emirates |
Also check the deals for one-way flights from Kolkata to San Francisco in May.
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