AirHint found the following cheapest return flights from Porto Alegre (POA) to Madrid (MAD) in September 2025 (see full year).

Return flights

30 Sep - 30 Oct	Azul Airlines
27 Sep - 04 Oct	Azul Airlines
18 Sep - 09 Oct	Azul Airlines
21 Sep - 26 Sep	Azul Airlines
04 Sep - 18 Sep	Azul Airlines
18 Sep - 28 Sep	Azul Airlines
18 Sep - 12 Oct	Azul Airlines
01 Sep - 07 Sep	Azul Airlines
08 Sep - 22 Sep	Azul Airlines
06 Sep - 21 Sep	Azul Airlines
01 Sep - 10 Sep	Azul Airlines
01 Sep - 11 Sep	Azul Airlines
20 Sep - 01 Oct	Azul Airlines
03 Sep - 07 Sep	Azul Airlines
02 Sep - 30 Oct	Azul Airlines
12 Sep - 27 Sep	Azul Airlines

Also check the deals for one-way flights from Porto Alegre to Madrid 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 Porto Alegre to Madrid in September from $868

Return flights