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

Return flights

19 Oct - 25 Oct	Frontier Airlines	direct
06 Oct - 12 Oct	Volaris
16 Oct - 25 Oct	Volaris
14 Oct - 25 Oct	Volaris
21 Oct - 25 Oct	Volaris
20 Oct - 25 Oct	Volaris
18 Oct - 25 Oct	Volaris
05 Oct - 12 Oct	Volaris
09 Oct - 11 Oct	Volaris
09 Oct - 12 Oct	Volaris
26 Oct - 02 Nov	Frontier Airlines
25 Oct - 02 Nov	Frontier Airlines
21 Oct - 05 Nov	Viva
21 Oct - 01 Nov	Viva
14 Oct - 01 Nov	Viva
25 Oct - 05 Nov	Viva
29 Oct - 02 Nov	Volaris
25 Oct - 12 Nov	Viva
29 Oct - 03 Nov	Volaris
21 Oct - 11 Nov	Viva

Also check the deals for one-way flights from Denver to Cancun in October.

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 October from $198

Return flights