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

Return flights

14 Sep - 20 Sep	IndiGo
15 Sep - 22 Sep	IndiGo
28 Sep - 10 Oct	IndiGo
26 Sep - 27 Oct	IndiGo
27 Sep - 04 Oct	Air India Express
26 Sep - 15 Oct	Air India Express
29 Sep - 04 Oct	IndiGo
19 Sep - 01 Oct	Air India Express
26 Sep - 04 Oct	IndiGo
19 Sep - 26 Sep	Air India Express
19 Sep - 03 Oct	Air India Express
26 Sep - 01 Oct	Air India Express
26 Sep - 10 Oct	Air India Express

Also check the deals for one-way flights from Kolkata to Muscat 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 Muscat in September from 183€

Return flights