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

Return flights

25 Sep - 09 Oct	LATAM Airlines Group
10 Sep - 24 Sep	LATAM Airlines Group
08 Sep - 15 Sep	LATAM Airlines Group
17 Sep - 30 Sep	LATAM Airlines Group
17 Sep - 02 Oct	LATAM Airlines Group
08 Sep - 26 Sep	Copa
02 Sep - 16 Sep	Copa
01 Sep - 13 Sep	Copa
15 Sep - 19 Sep	Copa
04 Sep - 14 Sep	Copa
11 Sep - 24 Sep	Copa
01 Sep - 06 Sep	Copa
25 Sep - 02 Oct	Copa
14 Sep - 05 Oct	Copa
27 Sep - 12 Oct	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 409€

Return flights