AirHint found the following cheapest return flights from New York (LGA) to Mexico City (MEX) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	Aeromexico
03 Dec - 07 Dec	Aeromexico
05 Dec - 09 Dec	Spirit Airlines
05 Dec - 07 Dec	Aeromexico
04 Dec - 06 Dec	Aeromexico
05 Dec - 12 Dec	Aeromexico
31 Dec - 13 Jan	Aeromexico
08 Dec - 15 Dec	Frontier Airlines
12 Dec - 18 Jan	Frontier Airlines
08 Dec - 13 Dec	Frontier Airlines
04 Dec - 08 Dec	Spirit Airlines
01 Dec - 05 Dec	Frontier Airlines
30 Dec - 10 Jan	Spirit Airlines
31 Dec - 17 Jan	Aeromexico
08 Dec - 13 Jan	Spirit Airlines
13 Dec - 14 Jan	Spirit Airlines
13 Dec - 18 Jan	Spirit Airlines
16 Dec - 12 Jan	Aeromexico
10 Dec - 19 Jan	Frontier Airlines
12 Dec - 06 Jan	Frontier Airlines

Also check the deals for one-way flights from New York to Mexico City 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 New York to Mexico City in December from $346

Return flights