AirHint found the following cheapest return flights from Porto Alegre (POA) to Lisbon (LIS) in December 2025 (see full year).

Return flights

20 Dec - 30 Dec	LATAM Airlines Group
01 Dec - 12 Dec	Azul Airlines
02 Dec - 13 Dec	Azul Airlines
03 Dec - 13 Dec	Azul Airlines
30 Dec - 11 Jan	LATAM Airlines Group
13 Dec - 23 Dec	TAP	direct
23 Dec - 13 Jan	LATAM Airlines Group
19 Dec - 29 Dec	LATAM Airlines Group
23 Dec - 30 Dec	TAP	direct
18 Dec - 01 Jan	TAP	direct
20 Dec - 30 Dec	TAP	direct
07 Dec - 05 Jan	Azul Airlines
27 Dec - 10 Jan	TAP	direct
12 Dec - 08 Jan	Azul Airlines
23 Dec - 13 Jan	TAP	direct
23 Dec - 03 Jan	TAP	direct
27 Dec - 13 Jan	TAP	direct
27 Dec - 03 Jan	TAP	direct
16 Dec - 26 Dec	Azul Airlines

Also check the deals for one-way flights from Porto Alegre to Lisbon in December.

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 December from $1176

Return flights