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

Return flights

23 Sep - 26 Sep	Air India
08 Sep - 16 Sep	Air India
03 Sep - 10 Sep	Air India
04 Sep - 11 Sep	Air India
03 Sep - 11 Sep	Air India
18 Sep - 25 Sep	Air India
06 Sep - 22 Sep	Etihad Airways
07 Sep - 14 Sep	Etihad Airways
24 Sep - 03 Oct	Etihad Airways
26 Sep - 03 Oct	Air India
26 Sep - 01 Oct	Air India
28 Sep - 09 Oct	KLM
26 Sep - 04 Oct	Air India
26 Sep - 30 Sep	Air India
27 Sep - 08 Oct	Air India
28 Sep - 04 Oct	Air India

Also check the deals for one-way flights from Kolkata to Amsterdam 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 Amsterdam in September from 491€

Return flights