Cheapest one-way flights from Porto Alegre to Lisbon in September from $381

AirHint found the following cheapest one-way flights from Porto Alegre (POA) to Lisbon (LIS) in September 2025 (see full year).

One-Way flights

30 Sep LATAM Airlines Group
29 Sep LATAM Airlines Group
23 Sep GOL Linhas Aéreas
28 Sep LATAM Airlines Group
24 Sep LATAM Airlines Group
25 Sep LATAM Airlines Group
22 Sep LATAM Airlines Group
14 Sep LATAM Airlines Group
20 Sep LATAM Airlines Group
13 Sep LATAM Airlines Group

Also check the deals for return flights from Porto Alegre to Lisbon in September.

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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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