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

Return flights

21 Dec - 31 Dec	China Eastern
08 Dec - 18 Dec	Japan Airlines
02 Dec - 07 Dec	Japan Airlines
26 Dec - 28 Dec	Japan Airlines
24 Dec - 28 Dec	Japan Airlines
06 Dec - 08 Dec	Japan Airlines
15 Dec - 18 Dec	Japan Airlines
01 Dec - 12 Dec	Japan Airlines
02 Dec - 06 Dec	Japan Airlines
24 Dec - 31 Dec	Japan Airlines
19 Dec - 05 Jan	Japan Airlines
19 Dec - 04 Jan	Japan Airlines
19 Dec - 03 Jan	Japan Airlines
18 Dec - 04 Jan	Japan Airlines
18 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 $501

Return flights