AirHint found the following cheapest return flights from Washington (IAD) to Willemstad (CUR) in October 2025 (see full year).

Return flights

14 Oct - 17 Oct	Avianca
07 Oct - 15 Oct	Avianca
27 Oct - 03 Nov	Avianca
21 Oct - 28 Oct	Avianca
28 Oct - 09 Nov	Avianca
28 Oct - 08 Nov	Avianca
27 Oct - 09 Nov	Avianca
27 Oct - 08 Nov	Avianca
28 Oct - 04 Nov	Avianca
29 Oct - 05 Nov	Avianca
21 Oct - 04 Nov	Avianca
16 Oct - 20 Oct	Avianca
31 Oct - 04 Nov	Avianca
19 Oct - 27 Oct	Avianca
03 Oct - 08 Oct	Copa
12 Oct - 15 Oct	Avianca
02 Oct - 06 Oct	Copa
03 Oct - 06 Oct	Avianca
09 Oct - 13 Oct	Avianca

Also check the deals for one-way flights from Washington to Willemstad in October.

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 Willemstad in October from $402

Return flights