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

Return flights

12 Dec - 15 Dec	Aeromexico
04 Dec - 07 Dec	Southwest Airlines
11 Dec - 15 Dec	Aeromexico
22 Dec - 25 Dec	Southwest Airlines
22 Dec - 26 Dec	Southwest Airlines
25 Dec - 30 Dec	Aeromexico
25 Dec - 29 Dec	Aeromexico
30 Dec - 04 Jan	Southwest Airlines
20 Dec - 25 Dec	Southwest Airlines
20 Dec - 28 Dec	Southwest Airlines
17 Dec - 21 Dec	Aeromexico
29 Dec - 03 Jan	Aeromexico
26 Dec - 02 Jan	Aeromexico

Also check the deals for one-way flights from Dallas 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 Dallas to Cancun in December from $671

Return flights