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

Return flights

22 Dec - 27 Dec	Azul Airlines	direct
13 Dec - 14 Dec	Azul Airlines
20 Dec - 24 Dec	Azul Airlines
22 Dec - 23 Dec	Azul Airlines
05 Dec - 11 Dec	Azul Airlines
28 Dec - 06 Jan	GOL Linhas Aéreas
20 Dec - 26 Dec	Azul Airlines
16 Dec - 20 Dec	Azul Airlines
23 Dec - 26 Dec	GOL Linhas Aéreas
03 Dec - 04 Dec	LATAM Airlines Group

Also check the deals for one-way flights from Curitiba 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.

Book a cheap hotel in Asuncion

Cheap car rent in Asuncion

Cheapest return flights from Curitiba to Asuncion in December from 228€

Return flights