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

Return flights

10 Sep - 13 Sep	Avianca
18 Sep - 27 Sep	Avianca
26 Sep - 29 Sep	Avianca
21 Sep - 28 Sep	Avianca
07 Sep - 13 Sep	Avianca
24 Sep - 28 Sep	Avianca
13 Sep - 17 Sep	Avianca
13 Sep - 20 Sep	Avianca
19 Sep - 21 Sep	Avianca
05 Sep - 10 Sep	Avianca
29 Sep - 06 Oct	Copa
28 Sep - 05 Oct	Copa

Also check the deals for one-way flights from Miami to Oranjestad 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 Miami to Oranjestad in September from 249€

Return flights