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

Return flights

10 Dec - 15 Dec	Air Transat
10 Dec - 16 Dec	Air Transat
11 Dec - 15 Dec	Air Transat
02 Dec - 09 Dec	Air Transat
05 Dec - 09 Dec	Air Transat
01 Dec - 07 Dec	Air Transat
23 Dec - 28 Dec	Air Transat
24 Dec - 28 Dec	Air Transat
23 Dec - 29 Dec	Air Transat
25 Dec - 30 Dec	Air Transat
27 Dec - 01 Jan	Air Transat
26 Dec - 04 Jan	Air Transat
28 Dec - 01 Jan	Air Transat
23 Dec - 02 Jan	Air Transat
30 Dec - 04 Jan	Air Transat
22 Dec - 02 Jan	Air Transat
28 Dec - 02 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 $421

Return flights