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

Return flights

22 Sep - 20 Oct	Air India
22 Sep - 07 Oct	Air India
14 Sep - 21 Sep	Air India
18 Sep - 27 Sep	Air India
20 Sep - 20 Oct	Air India
27 Sep - 10 Oct	Eurowings
19 Sep - 12 Oct	Eurowings
24 Sep - 02 Oct	Eurowings
19 Sep - 07 Oct	Eurowings
28 Sep - 14 Oct	Air India
19 Sep - 04 Oct	Eurowings
19 Sep - 25 Sep	Eurowings
27 Sep - 05 Oct	Eurowings
19 Sep - 27 Sep	Eurowings
01 Sep - 29 Sep	Air India
01 Sep - 17 Sep	Air India
09 Sep - 30 Sep	Air India
01 Sep - 30 Sep	Air India
22 Sep - 29 Sep	Air India
04 Sep - 24 Sep	Air India

Also check the deals for one-way flights from London to Madras 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 London to Madras in September from $516

Return flights