AirHint found the following cheapest return flights from Newark (EWR) to Willemstad (CUR) in August 2025 (see full year).

Return flights

06 Aug - 17 Aug	Spirit Airlines
06 Aug - 10 Aug	Spirit Airlines
06 Aug - 13 Aug	Spirit Airlines
29 Aug - 04 Sep	American Airlines
12 Aug - 19 Aug	American Airlines
09 Aug - 16 Aug	American Airlines
12 Aug - 17 Aug	Spirit Airlines
16 Aug - 24 Aug	Spirit Airlines
05 Aug - 09 Aug	Spirit Airlines
02 Aug - 13 Aug	Spirit Airlines
11 Aug - 18 Aug	Spirit Airlines
29 Aug - 01 Sep	American Airlines
27 Aug - 01 Sep	United
28 Aug - 02 Sep	United

Also check the deals for one-way flights from Newark to Willemstad in August.

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 Newark to Willemstad in August from $454

Return flights