AirHint found the following cheapest return flights from Los Angeles (LAX) to Seoul (GMP) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec	Air China
03 Dec - 14 Dec	Japan Airlines
01 Dec - 10 Dec	Japan Airlines
30 Dec - 15 Jan	ANA
10 Dec - 26 Dec	Japan Airlines
01 Dec - 29 Dec	Air China
06 Dec - 16 Dec	ANA
17 Dec - 24 Dec	ANA
01 Dec - 05 Jan	Air China
14 Dec - 29 Dec	ANA
21 Dec - 11 Jan	Japan Airlines
08 Dec - 02 Jan	Japan Airlines
29 Dec - 06 Jan	ANA
10 Dec - 03 Jan	Japan Airlines
18 Dec - 30 Dec	ANA
22 Dec - 07 Jan	ANA
23 Dec - 01 Jan	ANA
22 Dec - 04 Jan	Japan Airlines
18 Dec - 03 Jan	Japan Airlines
25 Dec - 31 Dec	Cathay Pacific

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Seoul in December from 598€

Return flights