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

Return flights

19 Oct - 26 Oct	Avianca
06 Oct - 22 Oct	Avianca
06 Oct - 24 Oct	Avianca
06 Oct - 17 Oct	Avianca
20 Oct - 24 Oct	Avianca
06 Oct - 15 Oct	Avianca
01 Oct - 08 Oct	Avianca
24 Oct - 26 Oct	Avianca
17 Oct - 26 Oct	Avianca
09 Oct - 16 Oct	Copa
31 Oct - 02 Nov	Avianca
27 Oct - 08 Nov	Avianca
29 Oct - 05 Nov	Avianca
31 Oct - 09 Nov	Avianca
24 Oct - 02 Nov	Avianca
31 Oct - 03 Nov	Avianca
15 Oct - 05 Nov	Avianca
30 Oct - 03 Nov	Air Canada
16 Oct - 09 Nov	WestJet
30 Oct - 02 Nov	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal 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 Montreal to Willemstad in October from $348

Return flights