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

Return flights

08 Sep - 19 Sep	Delta
22 Sep - 30 Sep	Delta
01 Sep - 17 Sep	Delta
08 Sep - 15 Sep	Delta
07 Sep - 15 Sep	Delta
03 Sep - 10 Sep	Delta
07 Sep - 14 Sep	Delta
09 Sep - 20 Sep	Delta
06 Sep - 20 Sep	Delta
06 Sep - 26 Sep	Delta
25 Sep - 30 Oct	Delta
17 Sep - 22 Oct	Delta
24 Sep - 29 Oct	Delta
18 Sep - 23 Oct	Delta
19 Sep - 16 Oct	Delta
16 Sep - 07 Oct	Delta
24 Sep - 01 Oct	Delta
28 Sep - 05 Oct	Delta
27 Sep - 16 Oct	Delta
24 Sep - 08 Oct	Delta

Also check the deals for one-way flights from Dublin to Sao Paulo 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 Dublin to Sao Paulo in September from 613€

Return flights