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

Return flights

10 Dec - 11 Dec	Spirit Airlines
13 Dec - 17 Jan	Delta
25 Dec - 11 Jan	Spirit Airlines
25 Dec - 12 Jan	Spirit Airlines
25 Dec - 14 Jan	Spirit Airlines
25 Dec - 08 Jan	Spirit Airlines
25 Dec - 09 Jan	Spirit Airlines
25 Dec - 15 Jan	Spirit Airlines
10 Dec - 21 Dec	Spirit Airlines
01 Dec - 09 Dec	Spirit Airlines
01 Dec - 06 Dec	Spirit Airlines
01 Dec - 10 Dec	Spirit Airlines
16 Dec - 21 Dec	Spirit Airlines
11 Dec - 21 Dec	Spirit Airlines
13 Dec - 21 Dec	Spirit Airlines
13 Dec - 21 Dec	Spirit Airlines	direct
15 Dec - 21 Dec	Spirit Airlines

Also check the deals for one-way flights from Cancun to Philadelphia 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 Cancun to Philadelphia in December from $469

Return flights