AirHint found the following cheapest return flights from Trenton (TTN) to Mexico City (MEX) in October 2025 (see full year).

Return flights

09 Oct - 12 Oct	Frontier Airlines
27 Oct - 30 Oct	Frontier Airlines
24 Oct - 01 Nov	Frontier Airlines
17 Oct - 02 Nov	Frontier Airlines
23 Oct - 26 Oct	Frontier Airlines
30 Oct - 03 Nov	Frontier Airlines

Also check the deals for one-way flights from Trenton to Mexico City 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 Trenton to Mexico City in October from $553

Return flights