AirHint found the following cheapest return flights from Busan (PUS) to Cheju (CJU) in September 2026 (see full year).
Return flights
| 19 Sep - 22 Sep | Korean Air | direct | |
| 28 Sep - 07 Oct | Korean Air | direct | |
| 23 Sep - 27 Sep | Korean Air | direct | |
| 24 Sep - 27 Sep | Korean Air | direct |
Also check the deals for one-way flights from Busan to Cheju in September.
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