AirHint found the following cheapest return flights from Buenos Aires (EZE) to Asuncion (ASU) in September 2025 (see full year).

Return flights

27 Sep - 01 Oct	Flybondi
28 Sep - 04 Oct	Aerolineas Argentinas
17 Sep - 20 Sep	Aerolineas Argentinas
20 Sep - 21 Sep	Flybondi
27 Sep - 30 Sep	Flybondi
27 Sep - 29 Sep	Flybondi
30 Sep - 03 Oct	LATAM Airlines Group
20 Sep - 27 Sep	Flybondi
19 Sep - 25 Sep	LATAM Airlines Group
19 Sep - 26 Sep	LATAM Airlines Group
26 Sep - 30 Sep	LATAM Airlines Group
21 Sep - 26 Sep	Aerolineas Argentinas
30 Sep - 04 Oct	Ethiopian Airlines
15 Sep - 17 Sep	Boliviana de Aviacion
22 Sep - 12 Oct	Ethiopian Airlines

Also check the deals for one-way flights from Buenos Aires 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.

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Cheapest return flights from Buenos Aires to Asuncion in September from 302€

Return flights