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

Return flights

09 Sep - 15 Sep	Avianca
23 Sep - 30 Sep	Avianca
15 Sep - 23 Sep	Arajet
14 Sep - 30 Sep	Arajet
14 Sep - 29 Sep	Arajet
15 Sep - 30 Sep	Arajet
15 Sep - 21 Sep	Arajet
15 Sep - 01 Oct	Arajet
10 Sep - 17 Sep	Copa
15 Sep - 22 Sep	Arajet
20 Sep - 27 Sep	Avianca
29 Sep - 18 Oct	TAAG Angola Airlines
23 Sep - 09 Oct	TAP
28 Sep - 14 Oct	Iberia
28 Sep - 10 Oct	GOL Linhas Aéreas
26 Sep - 16 Oct	British Airways
22 Sep - 06 Oct	Ethiopian Airlines
22 Sep - 08 Oct	Avianca
30 Sep - 30 Oct	Iberia
15 Sep - 27 Oct	Arajet

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 $944

Return flights