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

Return flights

20 Oct - 28 Oct	Air Canada
20 Oct - 27 Oct	Air Canada
29 Oct - 01 Nov	Air Canada
17 Oct - 25 Oct	Air Canada
24 Oct - 26 Oct	Air Canada
14 Oct - 21 Oct	Air Canada
24 Oct - 29 Oct	Air Canada
26 Oct - 29 Oct	Air Canada
11 Oct - 18 Oct	Air Canada
12 Oct - 19 Oct	WestJet
17 Oct - 23 Oct	Air Canada
24 Oct - 01 Nov	Air France

Also check the deals for one-way flights from Seoul 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 Seoul to Cancun in October from $825

Return flights