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

Return flights

25 Sep - 22 Oct	Gulf Air
01 Sep - 30 Sep	Air India
16 Sep - 30 Sep	British Airways
21 Sep - 03 Oct	British Airways
04 Sep - 29 Sep	Air India
17 Sep - 24 Sep	Air India
09 Sep - 29 Sep	Air India
08 Sep - 29 Sep	Air India
10 Sep - 29 Sep	Air India
10 Sep - 30 Sep	Air India
03 Sep - 24 Sep	Air India
08 Sep - 23 Sep	Air India
23 Sep - 14 Oct	British Airways
14 Sep - 05 Oct	British Airways
29 Sep - 16 Oct	Etihad Airways
09 Sep - 09 Oct	Etihad Airways
01 Sep - 15 Oct	Etihad Airways
15 Sep - 15 Oct	Etihad Airways
18 Sep - 15 Oct	Etihad Airways
01 Sep - 01 Oct	Etihad Airways

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 $549

Return flights