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

Return flights

01 Dec - 10 Dec	Avianca
17 Dec - 04 Jan	Delta
21 Dec - 04 Jan	Delta
22 Dec - 02 Jan	Delta
23 Dec - 02 Jan	Delta
22 Dec - 03 Jan	Delta
24 Dec - 02 Jan	Delta
08 Dec - 15 Dec	Aeromexico
19 Dec - 03 Jan	Aeromexico
01 Dec - 10 Dec	Aeromexico	direct
14 Dec - 26 Dec	Aeromexico
23 Dec - 01 Jan	United
25 Dec - 31 Dec	Aeromexico
08 Dec - 15 Dec	Aeromexico	direct
27 Dec - 06 Jan	Avianca
19 Dec - 03 Jan	Air Canada	direct
14 Dec - 26 Dec	Aeromexico	direct

Also check the deals for one-way flights from Mexico City to Montreal 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 Mexico City to Montreal in December from $819

Return flights