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

Return flights

16 Sep - 25 Oct	Etihad Airways
25 Sep - 25 Oct	Etihad Airways
02 Sep - 10 Sep	Etihad Airways
09 Sep - 16 Sep	Etihad Airways
14 Sep - 22 Sep	Air China
10 Sep - 17 Sep	Air China
09 Sep - 24 Oct	Etihad Airways
23 Sep - 30 Oct	Etihad Airways
14 Sep - 21 Sep	Etihad Airways
01 Sep - 23 Sep	Jetstar
25 Sep - 31 Oct	Etihad Airways
12 Sep - 28 Sep	AirAsia X
26 Sep - 18 Oct	Etihad Airways
23 Sep - 14 Oct	Etihad Airways
10 Sep - 25 Sep	Etihad Airways
10 Sep - 28 Sep	Etihad Airways
26 Sep - 04 Oct	Etihad Airways
05 Sep - 19 Sep	Air China
08 Sep - 16 Oct	Turkish Airlines
22 Sep - 09 Oct	Etihad Airways

Also check the deals for one-way flights from Melbourne to Barcelona 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 Barcelona in September from 840€

Return flights