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

Return flights

16 Dec - 18 Dec	Azul Airlines
22 Dec - 29 Dec	Azul Airlines
09 Dec - 12 Dec	Aerolíneas Argentinas
22 Dec - 26 Dec	Azul Airlines
17 Dec - 21 Dec	LATAM Airlines Group
25 Dec - 30 Dec	LATAM Airlines Group
16 Dec - 19 Dec	Azul Airlines
05 Dec - 12 Dec	Azul Airlines
13 Dec - 18 Dec	LATAM Airlines Group
07 Dec - 14 Dec	Azul Airlines

Also check the deals for one-way flights from Porto Alegre to Asuncion 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 Asuncion in December from $376

Return flights