Cheapest one-way flights from Washington to Cancun in May from $163

AirHint found the following cheapest one-way flights from Washington (IAD) to Cancun (CUN) in May 2026 (see full year).

One-Way flights

12 May Frontier Airlines
03 May Frontier Airlines
12 May United direct
03 May United direct
20 May United
15 May Frontier Airlines
20 May United direct
01 May United direct
15 May United direct
21 May United direct

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

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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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