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

Return flights

01 Dec - 18 Dec	Alaska Airlines
24 Dec - 10 Jan	Alaska Airlines
22 Dec - 08 Jan	Alaska Airlines
02 Dec - 31 Dec	Alaska Airlines
04 Dec - 31 Dec	Alaska Airlines
17 Dec - 31 Dec	Alaska Airlines
17 Dec - 01 Jan	Alaska Airlines
17 Dec - 02 Jan	Viva
16 Dec - 06 Jan	Alaska Airlines
28 Dec - 04 Jan	Alaska Airlines
17 Dec - 03 Jan	Viva

Also check the deals for one-way flights from Guadalajara to Seoul 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 Guadalajara to Seoul in December from 1806€

Return flights