AirHint found the following cheapest return flights from Seoul (ICN) to Mexico City (MEX) in December 2025 (see full year).

Return flights

05 Dec - 07 Jan	Air Canada
05 Dec - 06 Jan	Air Canada
05 Dec - 12 Jan	Air Canada
01 Dec - 05 Dec	Air Canada
01 Dec - 06 Dec	Air Canada
01 Dec - 07 Dec	Air Canada
03 Dec - 08 Dec	Air Canada
03 Dec - 09 Dec	Air Canada
02 Dec - 08 Dec	Air Canada
02 Dec - 09 Dec	Air Canada
01 Dec - 09 Dec	Air Canada
01 Dec - 08 Dec	Air Canada
04 Dec - 09 Dec	Air Canada
12 Dec - 07 Jan	United
25 Dec - 06 Jan	United
25 Dec - 02 Jan	United
28 Dec - 21 Jan	Air Premia
30 Dec - 06 Jan	United
24 Dec - 03 Jan	Air Premia
25 Dec - 03 Jan	United

Also check the deals for one-way flights from Seoul to Mexico City in December.

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 Mexico City in December from $956

Return flights