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

Return flights

24 Sep - 27 Sep	Spirit Airlines
29 Sep - 02 Oct	jetBlue
24 Sep - 26 Sep	Spirit Airlines
25 Sep - 02 Oct	Spirit Airlines
25 Sep - 28 Sep	Frontier Airlines
25 Sep - 03 Oct	Copa
19 Sep - 22 Sep	Frontier Airlines
11 Sep - 18 Sep	Spirit Airlines
10 Sep - 24 Sep	American Airlines
11 Sep - 18 Sep	Delta	direct
25 Sep - 02 Oct	Delta	direct
21 Sep - 28 Sep	Delta	direct
10 Sep - 14 Sep	Delta	direct
20 Sep - 27 Sep	Delta	direct

Also check the deals for one-way flights from Atlanta 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 Atlanta to Oranjestad in September from $428

Return flights