AirHint found the following cheapest return flights from Sao Paulo (GRU) to Willemstad (CUR) in September 2025 (see full year).

Return flights

24 Sep - 02 Oct	Avianca
19 Sep - 21 Sep	Copa
25 Sep - 30 Sep	Copa
29 Sep - 07 Oct	Avianca
20 Sep - 27 Sep	Avianca
23 Sep - 30 Sep	Avianca
19 Sep - 27 Sep	Avianca
20 Sep - 22 Sep	Avianca
25 Sep - 28 Sep	Copa
20 Sep - 30 Sep	Copa
19 Sep - 29 Sep	Copa
22 Sep - 29 Sep	Avianca
27 Sep - 05 Oct	Copa
27 Sep - 03 Oct	Copa

Also check the deals for one-way flights from Sao Paulo to Willemstad 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.

Book a cheap hotel in Willemstad

Cheap car rent in Willemstad

Cheapest return flights from Sao Paulo to Willemstad in September from 445€

Return flights