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

Return flights

26 Sep - 30 Sep	GOL Linhas Aéreas
23 Sep - 27 Sep	GOL Linhas Aéreas
27 Sep - 30 Sep	Azul Airlines
22 Sep - 28 Sep	Azul Airlines
23 Sep - 21 Oct	LATAM Airlines Group
22 Sep - 24 Sep	Azul Airlines
23 Sep - 30 Sep	Azul Airlines
19 Sep - 23 Sep	Azul Airlines
23 Sep - 28 Sep	Azul Airlines
19 Sep - 21 Sep	LATAM Airlines Group
28 Sep - 04 Oct	Azul Airlines
20 Sep - 23 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Sao Paulo to Asuncion in September.

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 Sao Paulo to Asuncion in September from $448

Return flights