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

Return flights

03 Dec - 10 Dec	Qantas
04 Dec - 11 Dec	Qantas
04 Dec - 08 Dec	Qantas
06 Dec - 12 Dec	Malaysia Airlines
05 Dec - 12 Dec	Malaysia Airlines
02 Dec - 10 Dec	Malaysia Airlines
25 Dec - 05 Jan	China Southern
13 Dec - 22 Dec	China Southern
15 Dec - 22 Dec	China Southern
11 Dec - 19 Dec	Malaysia Airlines
23 Dec - 04 Jan	China Southern
24 Dec - 27 Dec	Jetstar
29 Dec - 29 Jan	Jetstar
25 Dec - 19 Jan	China Southern
23 Dec - 01 Jan	Malaysia Airlines
11 Dec - 11 Jan	China Southern
20 Dec - 30 Jan	China Southern
18 Dec - 03 Jan	Malaysia Airlines
27 Dec - 15 Jan	Malaysia Airlines
26 Dec - 01 Jan	Cathay Pacific

Also check the deals for one-way flights from Adelaide 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 Adelaide to Seoul in December from 1194€

Return flights