AirHint found the following cheapest return flights from Kolkata (CCU) to London (LHR) in October 2025 (see full year).

Return flights

15 Oct - 22 Oct	Air India
06 Oct - 19 Oct	Air India
18 Oct - 31 Oct	Etihad Airways
01 Oct - 07 Oct	Air India
07 Oct - 15 Oct	Air India
01 Oct - 08 Oct	Air India
01 Oct - 09 Oct	Air India
07 Oct - 20 Oct	Air India
04 Oct - 11 Oct	Air India
21 Oct - 30 Oct	Air India
23 Oct - 03 Nov	Air India
01 Oct - 06 Nov	Etihad Airways
05 Oct - 16 Nov	Etihad Airways
31 Oct - 09 Nov	Air India
31 Oct - 22 Nov	Emirates

Also check the deals for one-way flights from Kolkata to London in October.

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 London in October from 467€

Return flights