AirHint found the following cheapest return flights from Sao Paulo (CGH) to Porto (OPO) in September 2026 (see full year).

Return flights

19 Sep - 03 Oct	Air Europa
29 Sep - 06 Oct	Air Europa
23 Sep - 13 Oct	Air Europa
19 Sep - 23 Sep	Air Europa
22 Sep - 06 Oct	Air Europa
22 Sep - 12 Oct	Air Europa
19 Sep - 05 Oct	Air Europa
23 Sep - 09 Oct	Air Europa
23 Sep - 08 Oct	Air Europa
29 Sep - 16 Oct	Air Europa
12 Sep - 23 Sep	Air Europa
08 Sep - 29 Sep	Air Europa
08 Sep - 15 Sep	Air Europa
08 Sep - 14 Sep	Air Europa
18 Sep - 02 Oct	GOL Linhas Aéreas
01 Sep - 11 Sep	Air Europa
01 Sep - 18 Sep	Air Europa
05 Sep - 23 Sep	Air Europa
05 Sep - 19 Sep	Air Europa
05 Sep - 12 Sep	Air Europa

Also check the deals for one-way flights from Sao Paulo to Porto 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 Sao Paulo to Porto in September from $863

Return flights