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

Return flights

01 Dec - 14 Dec	Avianca
01 Dec - 05 Dec	Avianca
01 Dec - 08 Dec	Air Canada
02 Dec - 09 Dec	Air Canada
03 Dec - 10 Dec	Avianca
08 Dec - 15 Dec	Air Canada
07 Dec - 14 Dec	WestJet
09 Dec - 16 Dec	Air Canada
05 Dec - 12 Dec	WestJet
04 Dec - 11 Dec	WestJet
29 Dec - 12 Jan	Air Canada
29 Dec - 09 Jan	Air Canada	direct
31 Dec - 07 Jan	Air Transat
28 Dec - 09 Jan	Air Canada
29 Dec - 05 Jan	Air Canada
25 Dec - 01 Jan	Air Canada
30 Dec - 06 Jan	Air Canada
26 Dec - 02 Jan	Air Canada	direct

Also check the deals for one-way flights from Montreal to Willemstad in December.

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 December from $413

Return flights