AirHint found the following cheapest return flights from Porto Alegre (POA) to Lisbon (LIS) in September 2026 (see full year).

Return flights

23 Sep - 08 Oct	Azul Airlines
23 Sep - 07 Oct	Azul Airlines
23 Sep - 03 Oct	GOL Linhas Aéreas
20 Sep - 06 Oct	GOL Linhas Aéreas
10 Sep - 24 Sep	Azul Airlines
17 Sep - 26 Sep	Azul Airlines
02 Sep - 22 Sep	Azul Airlines
03 Sep - 23 Sep	Azul Airlines
20 Sep - 03 Oct	GOL Linhas Aéreas
19 Sep - 05 Oct	GOL Linhas Aéreas
09 Sep - 23 Sep	GOL Linhas Aéreas
18 Sep - 27 Sep	Azul Airlines
12 Sep - 26 Sep	GOL Linhas Aéreas
17 Sep - 24 Sep	Azul Airlines
23 Sep - 03 Oct	TAP	direct
23 Sep - 08 Oct	TAP	direct
10 Sep - 18 Sep	Azul Airlines
17 Sep - 24 Sep	TAP	direct
20 Sep - 06 Oct	TAP	direct
20 Sep - 03 Oct	TAP	direct

Also check the deals for one-way flights from Porto Alegre to Lisbon 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 Lisbon in September from 848€

Return flights