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

Return flights

24 Aug - 26 Aug	Korean Air	direct
25 Aug - 27 Aug	Korean Air	direct
20 Aug - 24 Aug	Korean Air	direct
15 Aug - 21 Aug	Korean Air	direct
14 Aug - 21 Aug	Korean Air	direct
15 Aug - 17 Aug	Korean Air	direct
10 Aug - 13 Aug	Korean Air	direct
04 Aug - 08 Aug	Korean Air	direct
05 Aug - 09 Aug	Korean Air	direct

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

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 August from 49€

Return flights