AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Cancun (CUN) in December 2025 (see full year).

Return flights

05 Dec - 09 Dec	Frontier Airlines
13 Dec - 20 Dec	Frontier Airlines
13 Dec - 20 Dec	American Airlines	direct
30 Dec - 06 Jan	Aeromexico
19 Dec - 23 Dec	Aeromexico	direct
20 Dec - 29 Dec	Aeromexico	direct
26 Dec - 29 Dec	Aeromexico	direct
30 Dec - 03 Jan	Aeromexico
29 Dec - 03 Jan	Aeromexico
30 Dec - 03 Jan	Aeromexico	direct

Also check the deals for one-way flights from Raleigh-durham 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.

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Cheapest return flights from Raleigh-durham to Cancun in December from $369

Return flights