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

Return flights

26 Oct - 31 Oct	United	direct
14 Oct - 28 Oct	United	direct
15 Oct - 29 Oct	United	direct
14 Oct - 21 Oct	United	direct
13 Oct - 27 Oct	United
20 Oct - 26 Oct	Aeromexico
31 Oct - 06 Nov	Aeromexico
21 Oct - 26 Oct	Aeromexico
03 Oct - 17 Oct	United	direct
01 Oct - 15 Oct	Aeromexico
08 Oct - 22 Oct	United	direct
21 Oct - 04 Nov	United
30 Oct - 13 Nov	United	direct
31 Oct - 14 Nov	United
24 Oct - 07 Nov	United
25 Oct - 08 Nov	United
19 Oct - 02 Nov	United
27 Oct - 10 Nov	United
20 Oct - 03 Nov	United
18 Oct - 01 Nov	United	direct

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 212€

Return flights