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

Return flights

30 Oct - 06 Nov	Air Canada
25 Oct - 27 Oct	Aeromexico
27 Oct - 30 Oct	Air Canada
27 Oct - 03 Nov	Air Canada
29 Oct - 04 Nov	Air Canada
30 Oct - 04 Nov	Air Canada
28 Oct - 04 Nov	Air Canada
30 Oct - 05 Nov	Air Canada
31 Oct - 07 Nov	Air Canada
31 Oct - 02 Nov	Air Canada
31 Oct - 08 Nov	Air Canada
28 Oct - 31 Oct	Delta
25 Oct - 26 Oct	Aeromexico
24 Oct - 27 Oct	jetBlue
24 Oct - 26 Oct	Frontier Airlines
24 Oct - 28 Oct	Aeromexico
28 Oct - 01 Nov	Aeromexico
26 Oct - 28 Oct	Aeromexico

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 $337

Return flights