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

Return flights

03 Sep - 13 Sep	British Airways
15 Sep - 30 Sep	British Airways
14 Sep - 20 Sep	British Airways
03 Sep - 10 Sep	British Airways
24 Sep - 30 Sep	British Airways
01 Sep - 15 Sep	British Airways
11 Sep - 24 Sep	British Airways
05 Sep - 19 Sep	SWISS
24 Sep - 05 Oct	KLM
21 Sep - 05 Oct	KLM
07 Sep - 04 Oct	KLM
01 Sep - 14 Oct	KLM
13 Sep - 20 Sep	SWISS
01 Sep - 01 Oct	KLM
13 Sep - 04 Oct	KLM
17 Sep - 15 Oct	KLM
17 Sep - 01 Oct	KLM
03 Sep - 24 Sep	KLM
18 Sep - 05 Oct	Condor

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 1279€

Return flights