Cheapest one-way flights from Washington to Cancun in December from 129€

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

One-Way flights

31 Dec Frontier Airlines
15 Dec Frontier Airlines
15 Dec United direct
13 Dec United direct
14 Dec United direct
30 Dec Air Canada
09 Dec Air Canada
21 Dec Allegiant Air
30 Dec United direct
31 Dec United direct

Also check the deals for return flights from Washington to Cancun in December.

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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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