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

Return flights

29 Oct - 05 Nov	Aeromexico
11 Oct - 15 Oct	Aeromexico
13 Oct - 15 Oct	United
18 Oct - 21 Oct	American Airlines
11 Oct - 16 Oct	American Airlines
12 Oct - 17 Oct	American Airlines
29 Oct - 04 Nov	American Airlines
27 Oct - 30 Oct	jetBlue
27 Oct - 31 Oct	Delta
28 Oct - 31 Oct	Delta
25 Oct - 01 Nov	jetBlue
24 Oct - 31 Oct	jetBlue
24 Oct - 29 Oct	jetBlue
17 Oct - 01 Nov	jetBlue
27 Oct - 10 Nov	jetBlue
17 Oct - 02 Nov	jetBlue
15 Oct - 15 Nov	jetBlue
30 Oct - 04 Nov	Aeromexico
30 Oct - 02 Nov	Aeromexico
03 Oct - 01 Nov	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 $305

Return flights