AirHint found the following cheapest return flights from Melbourne (MEL) to London (LTN) in September 2025 (see full year).

Return flights

30 Sep - 20 Oct	Etihad Airways
30 Sep - 22 Oct	Etihad Airways
25 Sep - 09 Oct	Jetstar
24 Sep - 05 Oct	Thai Airways
23 Sep - 29 Sep	Jetstar
22 Sep - 29 Sep	Thai Airways
30 Sep - 23 Oct	Etihad Airways
30 Sep - 07 Oct	Jetstar
22 Sep - 06 Oct	Qatar Airways
27 Sep - 12 Oct	Scoot
30 Sep - 21 Oct	Emirates
28 Sep - 05 Oct	Jetstar
20 Sep - 28 Sep	Scoot
23 Sep - 30 Sep	Jetstar
19 Sep - 25 Sep	Etihad Airways

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

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Cheapest return flights from Melbourne to London in September from $1394

Return flights