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

Return flights

15 Sep - 18 Sep	IndiGo
17 Sep - 24 Sep	IndiGo
15 Sep - 24 Sep	IndiGo
22 Sep - 29 Sep	IndiGo
14 Sep - 21 Sep	IndiGo
06 Sep - 14 Sep	IndiGo
17 Sep - 29 Sep	Air India
28 Sep - 05 Oct	IndiGo
25 Sep - 05 Oct	IndiGo
26 Sep - 02 Oct	Emirates

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

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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Cheapest return flights from Kolkata to Zurich in September from 498€

Return flights