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

Return flights

30 Aug - 06 Sep	United
27 Aug - 03 Sep	Avianca
27 Aug - 13 Sep	Avianca
26 Aug - 02 Sep	Copa
28 Aug - 04 Sep	Copa
29 Aug - 05 Sep	Air Canada
20 Aug - 27 Aug	Avianca
31 Aug - 10 Sep	United
27 Aug - 01 Sep	Avianca
31 Aug - 15 Sep	Avianca
20 Aug - 15 Sep	Avianca
18 Aug - 25 Aug	Porter Airlines (Canada) Ltd
19 Aug - 28 Aug	Avianca
19 Aug - 26 Aug	Avianca
27 Aug - 31 Aug	Copa
14 Aug - 21 Aug	Copa
08 Aug - 15 Aug	Air Canada
11 Aug - 19 Aug	Porter Airlines (Canada) Ltd
17 Aug - 24 Aug	Avianca
06 Aug - 13 Aug	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal 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 Montreal to Willemstad in August from $416

Return flights