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

Return flights

26 Sep - 29 Sep	LATAM Airlines Group
20 Sep - 28 Sep	LATAM Airlines Group
03 Sep - 16 Sep	LATAM Airlines Group
08 Sep - 15 Sep	LATAM Airlines Group
19 Sep - 26 Sep	LATAM Airlines Group
05 Sep - 10 Sep	Copa
06 Sep - 10 Sep	Copa
04 Sep - 10 Sep	Copa
25 Sep - 01 Oct	Copa

Also check the deals for one-way flights from Asuncion to Lima 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 Asuncion to Lima in September from 328€

Return flights