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

Return flights

06 Aug - 12 Aug	China Eastern
10 Aug - 12 Aug	China Eastern
22 Aug - 25 Aug	Air China
16 Aug - 26 Aug	Air China
04 Aug - 02 Sep	Air China
22 Aug - 26 Aug	Air China
17 Aug - 28 Aug	Air China
04 Aug - 09 Aug	Air China
16 Aug - 19 Aug	Air China
13 Aug - 19 Aug	Air China
15 Aug - 26 Aug	EVA Air
27 Aug - 01 Sep	EVA Air
06 Aug - 04 Sep	EVA Air
20 Aug - 18 Sep	EVA Air
12 Aug - 10 Sep	Japan Airlines
05 Aug - 03 Sep	Japan Airlines
18 Aug - 16 Sep	Japan Airlines
14 Aug - 12 Sep	Japan Airlines
07 Aug - 05 Sep	Japan Airlines
09 Aug - 07 Sep	Japan Airlines

Also check the deals for one-way flights from Seoul to Jakarta in August.

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 August from $379

Return flights