AirHint found the following cheapest return flights from Philadelphia (PHL) to Cancun (CUN) in December 2025 (see full year).

Return flights

02 Dec - 09 Dec	Aeromexico
13 Dec - 16 Dec	jetBlue
02 Dec - 09 Dec	American Airlines	direct
02 Dec - 06 Dec	Aeromexico
14 Dec - 20 Dec	Aeromexico
02 Dec - 06 Dec	American Airlines	direct
14 Dec - 20 Dec	American Airlines	direct
13 Dec - 16 Dec	American Airlines	direct
09 Dec - 11 Jan	American Airlines	direct
03 Dec - 07 Dec	American Airlines
05 Dec - 08 Dec	Aeromexico
29 Dec - 01 Jan	Aeromexico
27 Dec - 02 Jan	Aeromexico

Also check the deals for one-way flights from Philadelphia to Cancun 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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from Philadelphia to Cancun in December from $400

Return flights