Cheapest one-way flights from Seoul to Cheju in January from $154

AirHint found the following cheapest one-way flights from Seoul (ICN) to Cheju (CJU) in January 2026 (see full year).

One-Way flights

28 Jan China Southern
26 Jan China Southern
29 Jan Korean Air
30 Jan Asiana Airlines
20 Jan Asiana Airlines
21 Jan Shandong Airlines
22 Jan HK Express
25 Jan Tianjin Airlines
23 Jan Xiamen Airlines
18 Jan China Southern

Also check the deals for return flights from Seoul to Cheju in January.

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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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