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

Return flights

25 Oct - 01 Nov	Delta
22 Oct - 25 Oct	Delta
25 Oct - 29 Oct	Delta
25 Oct - 31 Oct	Delta
26 Oct - 30 Oct	Delta
28 Oct - 31 Oct	Delta
23 Oct - 27 Oct	Delta
22 Oct - 29 Oct	Delta
27 Oct - 30 Oct	Delta
23 Oct - 30 Oct	Delta
31 Oct - 03 Nov	Air Canada
20 Oct - 22 Oct	Aeromexico
25 Oct - 02 Nov	Air Canada

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

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 October from 271€

Return flights