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

Return flights

26 Sep - 08 Oct	SalamAir
21 Sep - 31 Oct	SalamAir
18 Sep - 27 Oct	Air India
19 Sep - 22 Sep	Air India
20 Sep - 12 Oct	IndiGo
12 Sep - 20 Sep	IndiGo
18 Sep - 14 Oct	IndiGo
13 Sep - 21 Sep	Air India
12 Sep - 15 Sep	IndiGo
10 Sep - 20 Sep	IndiGo
09 Sep - 20 Sep	Air India
11 Sep - 04 Oct	Air India
16 Sep - 17 Oct	Air India
17 Sep - 18 Sep	Etihad Airways
10 Sep - 30 Sep	IndiGo
10 Sep - 13 Sep	IndiGo
21 Sep - 24 Oct	IndiGo
19 Sep - 02 Oct	IndiGo
11 Sep - 18 Sep	IndiGo
17 Sep - 17 Oct	IndiGo

Also check the deals for one-way flights from Madras 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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Madras to London in September from 393€

Return flights