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

Return flights

15 Sep - 27 Sep	Delta
04 Sep - 19 Sep	Delta
23 Sep - 30 Sep	Delta
11 Sep - 30 Sep	Delta
02 Sep - 17 Sep	Delta
08 Sep - 16 Sep	Delta
04 Sep - 18 Sep	Delta
21 Sep - 28 Sep	Delta
15 Sep - 28 Sep	Delta
04 Sep - 21 Sep	Delta
25 Sep - 02 Oct	Delta
24 Sep - 03 Oct	Delta
21 Sep - 03 Oct	Delta
24 Sep - 05 Oct	Delta
03 Sep - 01 Oct	Delta
10 Sep - 08 Oct	Delta
12 Sep - 05 Oct	Delta
25 Sep - 08 Oct	Delta
18 Sep - 04 Oct	Delta
19 Sep - 03 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 $715

Return flights