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

Return flights

10 Sep - 18 Sep	Avianca
09 Sep - 24 Sep	Copa
17 Sep - 24 Sep	Copa
04 Sep - 07 Sep	Copa
16 Sep - 23 Sep	Copa
29 Sep - 09 Oct	Copa
29 Sep - 10 Oct	Copa
30 Sep - 10 Oct	Copa
25 Sep - 02 Oct	Copa
30 Sep - 05 Oct	Copa
29 Sep - 06 Oct	Copa
28 Sep - 08 Oct	Copa
21 Sep - 30 Sep	Avianca
10 Sep - 17 Sep	Copa
03 Sep - 07 Sep	Copa
05 Sep - 13 Sep	Copa
08 Sep - 26 Sep	LATAM Airlines Group

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 364€

Return flights