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

Return flights

07 Dec - 12 Dec	Frontier Airlines
09 Dec - 12 Dec	Viva
04 Dec - 10 Dec	Viva
02 Dec - 04 Dec	Viva
07 Dec - 14 Dec	Frontier Airlines
02 Dec - 12 Dec	Viva
04 Dec - 08 Dec	Volaris
10 Dec - 15 Dec	Volaris
02 Dec - 10 Dec	Viva
04 Dec - 06 Dec	Viva
25 Dec - 15 Jan	Viva
25 Dec - 14 Jan	Viva
25 Dec - 12 Jan	Viva
30 Dec - 15 Jan	Viva
30 Dec - 14 Jan	Viva
24 Dec - 06 Jan	Volaris
24 Dec - 10 Jan	Volaris
31 Dec - 06 Jan	American Airlines
30 Dec - 18 Jan	Viva
30 Dec - 19 Jan	Viva

Also check the deals for one-way flights from Denver 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 Denver to Cancun in December from $339

Return flights