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

Return flights

20 Oct - 04 Nov	Air India
15 Oct - 26 Oct	Air India
08 Oct - 23 Nov	Air India
16 Oct - 15 Nov	Air India
03 Oct - 05 Nov	Air India
10 Oct - 04 Nov	Air India
21 Oct - 07 Nov	Air India
14 Oct - 15 Nov	Etihad Airways
23 Oct - 29 Oct	Air India
21 Oct - 29 Oct	Air India
16 Oct - 28 Oct	Air India
21 Oct - 10 Nov	Air India
27 Oct - 05 Nov	Air India
08 Oct - 11 Nov	Air India
10 Oct - 29 Oct	Air India
04 Oct - 08 Oct	Air India
10 Oct - 31 Oct	Air India
18 Oct - 26 Oct	Air India
12 Oct - 19 Oct	Air India
13 Oct - 20 Oct	Air India

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 453€

Return flights