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

Return flights

16 Sep - 23 Sep	Ethiopian Airlines
25 Sep - 27 Sep	Avianca
26 Sep - 29 Sep	Avianca
18 Sep - 04 Oct	Avianca
20 Sep - 27 Sep	Avianca
15 Sep - 23 Sep	ITA Airways
20 Sep - 06 Oct	Avianca
18 Sep - 25 Sep	KLM
18 Sep - 23 Sep	ITA Airways
19 Sep - 29 Sep	Copa
16 Sep - 27 Sep	Avianca
16 Sep - 29 Sep	Avianca
15 Sep - 01 Oct	Avianca
28 Sep - 06 Oct	Ethiopian Airlines
24 Sep - 04 Oct	GOL Linhas Aéreas
22 Sep - 07 Oct	Avianca
19 Sep - 07 Oct	Avianca
16 Sep - 14 Oct	Avianca
11 Sep - 01 Oct	Arajet
22 Sep - 06 Oct	KLM

Also check the deals for one-way flights from Sao Paulo 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 Sao Paulo to Dublin in September from 786€

Return flights