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

Return flights

08 Dec - 15 Jan	Air Canada
03 Dec - 15 Jan	Air Canada
10 Dec - 15 Jan	Air Canada
07 Dec - 21 Jan	Air Canada
10 Dec - 21 Jan	Air Canada
10 Dec - 28 Jan	Air Canada
10 Dec - 19 Jan	Air Canada
01 Dec - 07 Dec	Delta
01 Dec - 08 Dec	Delta
31 Dec - 28 Jan	Delta
05 Dec - 27 Jan	Delta
07 Dec - 20 Jan	Delta
01 Dec - 09 Dec	Delta
07 Dec - 24 Dec	Delta
03 Dec - 10 Dec	Air Canada
02 Dec - 09 Dec	Delta
15 Dec - 22 Dec	Air Canada
01 Dec - 15 Dec	Air Canada
02 Dec - 12 Dec	Aer Lingus
01 Dec - 12 Dec	Air Canada

Also check the deals for one-way flights from Dublin to Sao Paulo in December.

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 December from $688

Return flights