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

Return flights

01 Dec - 09 Dec	WestJet
03 Dec - 10 Dec	Air Canada	direct
02 Dec - 09 Dec	Air Canada	direct
29 Dec - 11 Jan	WestJet
03 Dec - 08 Dec	Air Canada
01 Dec - 08 Dec	Air Canada
09 Dec - 16 Dec	Air Canada	direct
08 Dec - 15 Dec	Air Canada
29 Dec - 10 Jan	WestJet
05 Dec - 09 Dec	Air Canada	direct
05 Dec - 10 Dec	Air Canada	direct
16 Dec - 07 Jan	WestJet
02 Dec - 22 Dec	Air Canada	direct
29 Dec - 15 Jan	WestJet
09 Dec - 01 Jan	Air Transat	direct
22 Dec - 09 Jan	WestJet
18 Dec - 07 Jan	WestJet
25 Dec - 07 Jan	WestJet
30 Dec - 18 Jan	Air Transat	direct
24 Dec - 09 Jan	Air Transat	direct

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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from Montreal to Cancun in December from 268€

Return flights