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

Return flights

07 Oct - 11 Oct	Viva	direct
25 Oct - 01 Nov	Viva	direct
07 Oct - 14 Oct	Viva	direct
07 Oct - 21 Oct	Viva	direct
07 Oct - 28 Oct	Viva	direct
14 Oct - 01 Nov	Viva	direct
14 Oct - 28 Oct	Viva	direct
21 Oct - 01 Nov	Viva	direct
21 Oct - 28 Oct	Viva	direct
21 Oct - 08 Nov	Viva	direct
21 Oct - 11 Nov	Viva	direct
25 Oct - 08 Nov	Viva	direct
25 Oct - 11 Nov	Viva	direct
25 Oct - 13 Nov	Viva	direct
07 Oct - 25 Oct	Viva	direct
18 Oct - 01 Nov	Viva	direct
14 Oct - 25 Oct	Viva	direct
18 Oct - 21 Oct	Viva	direct
18 Oct - 28 Oct	Viva	direct
21 Oct - 06 Nov	Viva	direct

Also check the deals for one-way flights from Denver to Monterrey 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 Monterrey in October from $207

Return flights