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

Return flights

15 Sep - 30 Sep	Delta
02 Sep - 17 Sep	Delta
18 Sep - 29 Sep	Delta
05 Sep - 13 Sep	Delta
13 Sep - 27 Sep	Delta
05 Sep - 26 Sep	Delta
10 Sep - 18 Sep	Delta
09 Sep - 19 Sep	Delta
16 Sep - 30 Sep	Delta
06 Sep - 26 Sep	Delta
19 Sep - 15 Oct	Delta
15 Sep - 15 Oct	Delta
25 Sep - 30 Oct	Delta
17 Sep - 22 Oct	Delta
27 Sep - 04 Oct	Delta
26 Sep - 10 Oct	Delta
08 Sep - 20 Oct	Delta
16 Sep - 14 Oct	Delta
25 Sep - 16 Oct	Delta
16 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