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

Return flights

07 Dec - 15 Dec	Air Transat
01 Dec - 15 Dec	Air Transat
12 Dec - 18 Dec	Air Transat
02 Dec - 09 Dec	Air Transat
03 Dec - 15 Dec	Air Transat
12 Dec - 14 Dec	Air Transat
11 Dec - 18 Dec	Air Transat
06 Dec - 14 Dec	Air Transat
07 Dec - 13 Dec	Air Transat
08 Dec - 13 Dec	Air Transat
27 Dec - 09 Jan	Air Transat
01 Dec - 07 Jan	Air Transat
16 Dec - 09 Jan	Air Transat
16 Dec - 10 Jan	Porter Airlines (Canada) Ltd
23 Dec - 09 Jan	Air Transat
25 Dec - 15 Jan	Air Transat
31 Dec - 06 Jan	Air Transat
27 Dec - 05 Jan	Air Transat
31 Dec - 05 Jan	Air Transat
30 Dec - 05 Jan	Air Transat

Also check the deals for one-way flights from Toronto 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 Toronto to Cancun in December from $340

Return flights