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

Return flights

15 Aug - 22 Aug	Air India
13 Aug - 26 Aug	IndiGo
23 Aug - 02 Sep	IndiGo
15 Aug - 31 Aug	Air India
15 Aug - 30 Aug	IndiGo
05 Aug - 12 Aug	IndiGo
07 Aug - 18 Aug	Air India
15 Aug - 25 Aug	IndiGo
14 Aug - 18 Sep	IndiGo
14 Aug - 25 Aug	Air India
19 Aug - 07 Sep	Emirates

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

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 August from 538€

Return flights