AirHint found the following cheapest return flights from Seoul (ICN) to Cheju (CJU) in March 2026 (see full year).

Return flights

13 Mar - 17 Mar	China Southern
10 Mar - 17 Mar	China Southern
02 Mar - 05 Mar	Air China
30 Mar - 02 Apr	China Southern
02 Mar - 07 Mar	China Southern
08 Mar - 12 Mar	China Southern
27 Mar - 31 Mar	China Southern
05 Mar - 18 Mar	Tigerair Taiwan
28 Mar - 02 Apr	Shanghai Airlines
08 Mar - 15 Mar	China Southern
22 Mar - 25 Mar	Peach
15 Mar - 18 Mar	Jeju Air
23 Mar - 02 Apr	Jeju Air
25 Mar - 04 Apr	Jeju Air

Also check the deals for one-way flights from Seoul to Cheju in March.

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 Cheju in March from $268

Return flights