AirHint found the following cheapest one-way flights from Montreal (YUL) to Mexico City (MEX) in December 2025 (see full year).
One-Way flights
| 30 Dec | Aeromexico | direct | |
| 31 Dec | Aeromexico | direct | |
| 05 Dec | Porter Airlines (Canada) Ltd | ||
| 08 Dec | WestJet | ||
| 01 Dec | WestJet | ||
| 04 Dec | WestJet | ||
| 09 Dec | WestJet | ||
| 02 Dec | WestJet | ||
| 10 Dec | WestJet | ||
| 15 Dec | WestJet |
Also check the deals for return flights from Montreal to Mexico City in December.
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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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