Cheapest return flights from Washington to Cancun in December from $387

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

Return flights

06 Dec - 12 Dec Frontier Airlines
07 Dec - 12 Dec Frontier Airlines
11 Dec - 16 Dec Frontier Airlines
13 Dec - 13 Dec Frontier Airlines
04 Dec - 08 Dec Frontier Airlines
06 Dec - 13 Dec Frontier Airlines
02 Dec - 16 Dec Aeromexico
15 Dec - 22 Dec Frontier Airlines
12 Dec - 19 Dec Frontier Airlines
03 Dec - 08 Dec Air Canada
30 Dec - 03 Jan Aeromexico
27 Dec - 03 Jan Aeromexico
28 Dec - 02 Jan Aeromexico
24 Dec - 06 Jan Frontier Airlines
24 Dec - 01 Jan Frontier Airlines
24 Dec - 02 Jan Frontier Airlines
26 Dec - 03 Jan Frontier Airlines
24 Dec - 01 Jan United direct
25 Dec - 01 Jan United direct

Also check the deals for one-way flights from Washington to Cancun in December.

Skyscanner

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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