AirHint found the following cheapest return flights from Kochi (COK) to London (LHR) in September 2025 (see full year).

Return flights

27 Sep - 21 Oct	Oman Air
22 Sep - 23 Sep	Air India
22 Sep - 27 Sep	Air India
24 Sep - 21 Oct	Oman Air
28 Sep - 21 Oct	Oman Air
24 Sep - 01 Oct	Oman Air
22 Sep - 06 Oct	Oman Air
20 Sep - 27 Sep	Air India
25 Sep - 27 Sep	IndiGo
24 Sep - 03 Oct	IndiGo
27 Sep - 20 Oct	Air France
28 Sep - 22 Oct	Air France
25 Sep - 22 Oct	Air France
20 Sep - 11 Oct	Air India
20 Sep - 26 Sep	Air India
26 Sep - 29 Sep	IndiGo
22 Sep - 25 Sep	Air India
25 Sep - 25 Sep	Air India
15 Sep - 26 Sep	Air India
18 Sep - 25 Sep	Air India Express

Also check the deals for one-way flights from Kochi to London 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 Kochi to London in September from 508€

Return flights