AirHint found the following cheapest return flights from London (LHR) to Melbourne (MEL) in September 2026 (see full year).

Return flights

20 Sep - 15 Oct	China Southern
04 Sep - 13 Sep	Hainan Airlines
18 Sep - 18 Oct	Hainan Airlines
18 Sep - 13 Oct	Hainan Airlines
08 Sep - 14 Oct	China Southern
14 Sep - 30 Sep	Air India
10 Sep - 26 Sep	Air India
07 Sep - 28 Sep	Air India
07 Sep - 27 Sep	Air India
01 Sep - 30 Sep	Air India
07 Sep - 07 Oct	Air India
15 Sep - 30 Sep	Air India
08 Sep - 03 Oct	Air India
09 Sep - 23 Sep	Air India
21 Sep - 30 Sep	Air India
15 Sep - 19 Oct	China Southern
12 Sep - 26 Sep	Air India
21 Sep - 08 Oct	Air India
01 Sep - 01 Oct	Air India
19 Sep - 10 Oct	Air India

Also check the deals for one-way flights from London to Melbourne 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 Melbourne in September from 766€

Return flights