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

Return flights

28 Sep - 28 Oct	AirAsia X
30 Sep - 12 Oct	Qantas
25 Sep - 07 Oct	Jetstar
16 Sep - 22 Oct	VietJet Air
27 Sep - 15 Oct	Jetstar
23 Sep - 14 Oct	Sichuan Airlines
11 Sep - 16 Sep	Batik Air
30 Sep - 10 Oct	Qantas
19 Sep - 16 Oct	Batik Air Malaysia
17 Sep - 15 Oct	Jetstar
11 Sep - 15 Sep	Batik Air Malaysia
22 Sep - 06 Oct	Jetstar
11 Sep - 23 Sep	Jetstar
14 Sep - 21 Sep	VietJet Air
12 Sep - 21 Sep	Jetstar
12 Sep - 25 Sep	Jetstar
18 Sep - 30 Sep	Sichuan Airlines
20 Sep - 30 Sep	Jetstar
18 Sep - 26 Sep	Sichuan Airlines
15 Sep - 29 Sep	AirAsia X

Also check the deals for one-way flights from Melbourne to Dublin 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 Dublin in September from 990€

Return flights