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

Return flights

04 Dec - 08 Dec	Frontier Airlines
05 Dec - 07 Dec	Frontier Airlines
01 Dec - 08 Dec	Aeromexico	direct
07 Dec - 10 Dec	Frontier Airlines
04 Dec - 08 Dec	Delta	direct
01 Dec - 11 Dec	Volaris
07 Dec - 10 Dec	Delta	direct
01 Dec - 11 Dec	Delta	direct
17 Dec - 22 Dec	Volaris
11 Dec - 17 Dec	Frontier Airlines
18 Dec - 11 Jan	Frontier Airlines
18 Dec - 10 Jan	Frontier Airlines
20 Dec - 11 Jan	Volaris
20 Dec - 10 Jan	Volaris
26 Dec - 01 Jan	Volaris
19 Dec - 10 Jan	Frontier Airlines
19 Dec - 11 Jan	Frontier Airlines
30 Dec - 03 Jan	Volaris
23 Dec - 03 Jan	Volaris
20 Dec - 04 Jan	Hawaiian Airlines

Also check the deals for one-way flights from Phoenix 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 Phoenix to Mexico City in December from 235€

Return flights