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

Return flights

29 Sep - 15 Oct	LATAM Airlines Group
16 Sep - 23 Sep	LATAM Airlines Group
26 Sep - 13 Oct	LATAM Airlines Group
26 Sep - 11 Oct	LATAM Airlines Group
25 Sep - 07 Oct	LATAM Airlines Group
09 Sep - 24 Sep	Copa
01 Sep - 13 Sep	Copa
09 Sep - 23 Sep	Copa
15 Sep - 27 Sep	Copa
08 Sep - 26 Sep	Copa
15 Sep - 22 Sep	Copa

Also check the deals for one-way flights from Asuncion to Miami 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 Miami in September from $492

Return flights