AirHint found the following cheapest return flights from Busan (PUS) to Cheju (CJU) in May 2026 (see full year).

Return flights

23 May - 27 May	Korean Air	direct
10 May - 13 May	Korean Air	direct
16 May - 18 May	Korean Air	direct
23 May - 24 May	Korean Air	direct
02 May - 14 May	Korean Air	direct
04 May - 11 May	Korean Air	direct
03 May - 07 May	Korean Air	direct
22 May - 24 May	Korean Air	direct
23 May - 25 May	Korean Air	direct
02 May - 04 May	Korean Air	direct

Also check the deals for one-way flights from Busan to Cheju in May.

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 Busan to Cheju in May from 99€

Return flights