AirHint found the following cheapest return flights from Madrid (MAD) to Sao Paulo (GRU) in August 2025 (see full year).

Return flights

25 Aug - 28 Sep	Delta
28 Aug - 14 Sep	Delta
25 Aug - 09 Sep	Delta
27 Aug - 09 Sep	Delta
25 Aug - 07 Sep	Delta
27 Aug - 03 Sep	Delta
25 Aug - 01 Sep	Delta
22 Aug - 09 Sep	Delta
21 Aug - 15 Sep	Delta
18 Aug - 21 Sep	Delta
18 Aug - 24 Aug	Delta
25 Aug - 31 Aug	Delta
14 Aug - 23 Aug	TAP
14 Aug - 21 Aug	TAP
17 Aug - 23 Aug	TAP
18 Aug - 23 Aug	TAP
16 Aug - 23 Aug	TAP
17 Aug - 24 Aug	Delta
18 Aug - 25 Aug	Delta
19 Aug - 24 Aug	Ryanair

Also check the deals for one-way flights from Madrid to Sao Paulo in August.

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 Madrid to Sao Paulo in August from $720

Return flights