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

Return flights

01 May - 07 May	United	direct
03 May - 08 May	United	direct
01 May - 06 May	United	direct
12 May - 20 May	United	direct
19 May - 23 May	United
04 May - 09 May	United
01 May - 08 May	United	direct
07 May - 11 May	United	direct
20 May - 27 May	United
01 May - 04 May	United	direct
30 May - 02 Jun	United
30 May - 06 Jun	Air Canada

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

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 Washington to Cancun in May from 256€

Return flights