AirHint found the following cheapest return flights from Washington (IAD) to Oranjestad (AUA) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep	Avianca
13 Aug - 27 Aug	United
29 Aug - 01 Sep	Avianca
18 Aug - 27 Aug	Avianca
04 Aug - 18 Aug	United
19 Aug - 31 Aug	Avianca
16 Aug - 30 Aug	United
10 Aug - 14 Aug	United
06 Aug - 20 Aug	United
17 Aug - 21 Aug	Avianca
20 Aug - 25 Aug	United	direct
23 Aug - 06 Sep	United
11 Aug - 25 Aug	United
30 Aug - 13 Sep	United	direct
31 Aug - 14 Sep	United
21 Aug - 04 Sep	United
28 Aug - 11 Sep	United
22 Aug - 05 Sep	United
28 Aug - 02 Sep	Avianca
28 Aug - 04 Sep	Avianca

Also check the deals for one-way flights from Washington to Oranjestad 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 Washington to Oranjestad in August from $382

Return flights