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

Return flights

16 Sep - 30 Sep	Air India
25 Sep - 12 Oct	Air India
25 Sep - 13 Oct	Air India
29 Sep - 23 Oct	IndiGo
29 Sep - 22 Oct	IndiGo
28 Sep - 14 Oct	IndiGo
24 Sep - 24 Oct	IndiGo
29 Sep - 14 Oct	IndiGo
25 Sep - 24 Oct	IndiGo
26 Sep - 13 Oct	Air India
29 Sep - 13 Oct	Air India
01 Sep - 20 Sep	Emirates

Also check the deals for one-way flights from Kolkata to Copenhagen 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 Copenhagen in September from 495€

Return flights