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

Return flights

26 Dec - 01 Jan	Air China
25 Dec - 31 Dec	Air Busan
28 Dec - 03 Jan	Japan Airlines
03 Dec - 08 Dec	Japan Airlines
01 Dec - 04 Dec	Japan Airlines
23 Dec - 26 Dec	Japan Airlines
23 Dec - 30 Dec	Japan Airlines
20 Dec - 28 Dec	Japan Airlines
01 Dec - 08 Dec	Japan Airlines
03 Dec - 07 Dec	Japan Airlines
20 Dec - 27 Dec	Japan Airlines
04 Dec - 11 Dec	Japan Airlines
20 Dec - 04 Jan	Japan Airlines
25 Dec - 03 Jan	Japan Airlines
26 Dec - 03 Jan	Japan Airlines
06 Dec - 09 Jan	Japan Airlines
30 Dec - 12 Jan	Japan Airlines
22 Dec - 01 Jan	Japan Airlines
22 Dec - 03 Jan	Japan Airlines
26 Dec - 02 Jan	Japan Airlines

Also check the deals for one-way flights from Seoul to Jakarta 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 Jakarta in December from $377

Return flights