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

Return flights

15 Oct - 22 Oct	jetBlue
05 Oct - 08 Oct	jetBlue
01 Oct - 04 Oct	jetBlue
01 Oct - 05 Oct	jetBlue
05 Oct - 10 Oct	jetBlue
03 Oct - 05 Oct	jetBlue
02 Oct - 06 Oct	jetBlue
02 Oct - 05 Oct	jetBlue
03 Oct - 11 Oct	jetBlue
31 Oct - 04 Nov	jetBlue
17 Oct - 20 Oct	jetBlue
31 Oct - 10 Nov	jetBlue
30 Oct - 04 Nov	jetBlue
30 Oct - 03 Nov	jetBlue
21 Oct - 04 Nov	United
22 Oct - 05 Nov	United
29 Oct - 12 Nov	United
19 Oct - 02 Nov	United
23 Oct - 06 Nov	United
24 Oct - 07 Nov	United

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 $372

Return flights