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

Return flights

03 Dec - 30 Dec	United
02 Dec - 29 Dec	United
03 Dec - 08 Dec	United
03 Dec - 09 Dec	United
03 Dec - 01 Jan	Air Canada
05 Dec - 07 Dec	United
02 Dec - 31 Dec	Air Canada
02 Dec - 01 Jan	Air Canada
10 Dec - 07 Jan	United
09 Dec - 30 Dec	United
06 Dec - 11 Dec	Air Canada
10 Dec - 15 Dec	Air Canada
08 Dec - 16 Dec	Air Canada
15 Dec - 02 Jan	Air Canada
26 Dec - 02 Jan	United
28 Dec - 11 Jan	Asiana Airlines
17 Dec - 07 Jan	United
29 Dec - 12 Jan	United
29 Dec - 26 Jan	United
22 Dec - 10 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 747€

Return flights