AirHint found the following cheapest return flights from Seoul (ICN) to Cheju (CJU) in May 2026 (see full year).
Return flights
| 07 May - 09 May | HK Express | ||
| 13 May - 17 May | HK Express | ||
| 07 May - 07 May | Peach | ||
| 04 May - 06 May | Air Premia | ||
| 03 May - 05 May | Korean Air | ||
| 17 May - 24 May | T'way Air | ||
| 19 May - 22 May | Jin Air |
Also check the deals for one-way flights from Seoul to Cheju in May.
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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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