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

Return flights

10 Sep - 18 Sep	TAP
14 Sep - 29 Sep	Delta
22 Sep - 30 Sep	Delta
09 Sep - 30 Sep	Delta
17 Sep - 29 Sep	Delta
11 Sep - 28 Sep	Delta
06 Sep - 26 Sep	Delta
08 Sep - 15 Sep	Delta
02 Sep - 21 Sep	Delta
05 Sep - 12 Sep	Delta
16 Sep - 15 Oct	Delta
25 Sep - 30 Oct	Delta
24 Sep - 29 Oct	Delta
18 Sep - 23 Oct	Delta
22 Sep - 03 Oct	Delta
28 Sep - 13 Oct	Delta
14 Sep - 05 Oct	Delta
22 Sep - 20 Oct	Delta
11 Sep - 05 Oct	Delta
08 Sep - 14 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 535€

Return flights