AirHint found the following cheapest return flights from Montreal (YUL) to Cancun (CUN) in December 2026 (see full year).

Return flights

23 Dec - 02 Jan	WestJet
02 Dec - 09 Dec	United
01 Dec - 08 Dec	WestJet
07 Dec - 14 Dec	WestJet
05 Dec - 12 Dec	United
03 Dec - 12 Dec	WestJet
03 Dec - 10 Dec	WestJet
04 Dec - 11 Dec	WestJet
06 Dec - 13 Dec	WestJet
11 Dec - 18 Dec	WestJet
24 Dec - 28 Dec	WestJet
18 Dec - 15 Jan	Air Transat	direct
17 Dec - 06 Jan	Air Transat	direct
30 Dec - 07 Jan	Air Transat	direct
12 Dec - 09 Jan	Air Transat	direct
20 Dec - 10 Jan	WestJet
27 Dec - 02 Jan	Copa
19 Dec - 15 Jan	Air Transat	direct
12 Dec - 03 Jan	Air Transat	direct
20 Dec - 02 Jan	Copa

Also check the deals for one-way flights from Montreal to Cancun 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 Cancun in December from 343€

Return flights