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

Return flights

25 Oct - 01 Nov	United
20 Oct - 27 Oct	Avianca
22 Oct - 29 Oct	Avianca
19 Oct - 26 Oct	Avianca
27 Oct - 03 Nov	Avianca
26 Oct - 02 Nov	Avianca
05 Oct - 12 Oct	Avianca
18 Oct - 25 Oct	United
24 Oct - 31 Oct	Avianca
13 Oct - 20 Oct	Avianca
15 Oct - 22 Oct	Avianca
01 Oct - 08 Oct	Avianca
29 Oct - 05 Nov	Avianca
17 Oct - 24 Oct	Avianca
31 Oct - 07 Nov	Avianca
30 Oct - 06 Nov	WestJet
20 Oct - 11 Nov	Avianca
28 Oct - 04 Nov	WestJet
31 Oct - 07 Nov	Air Canada	direct

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 $330

Return flights