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

Return flights

16 Aug - 23 Aug	Spirit Airlines
07 Aug - 16 Aug	Spirit Airlines
17 Aug - 25 Aug	Spirit Airlines
15 Aug - 18 Aug	Spirit Airlines
06 Aug - 10 Aug	Spirit Airlines
13 Aug - 18 Aug	Spirit Airlines
15 Aug - 24 Aug	Avianca
20 Aug - 27 Aug	Avianca
14 Aug - 18 Aug	Spirit Airlines
14 Aug - 17 Aug	Copa

Also check the deals for one-way flights from Chicago 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 Chicago to Willemstad in August from 488€

Return flights