AirHint found the following cheapest return flights from Sao Paulo (GRU) to Asuncion (ASU) in December 2025 (see full year).

Return flights

17 Dec - 24 Dec	LATAM Airlines Group	direct
27 Dec - 17 Jan	Azul Airlines
31 Dec - 04 Jan	Aerolineas Argentinas
31 Dec - 03 Jan	Aerolineas Argentinas
22 Dec - 09 Jan	Azul Airlines
30 Dec - 03 Jan	Azul Airlines
26 Dec - 10 Jan	Azul Airlines
21 Dec - 09 Jan	Aerolineas Argentinas
21 Dec - 09 Jan	LATAM Airlines Group	direct
27 Dec - 17 Jan	LATAM Airlines Group	direct
22 Dec - 09 Jan	LATAM Airlines Group	direct

Also check the deals for one-way flights from Sao Paulo 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 Sao Paulo to Asuncion in December from 289€

Return flights