AirHint found the following cheapest return flights from Cheju (CJU) to Istanbul (IST) in September 2026 (see full year).
Return flights
| 09 Sep - 22 Sep | Air China | ||
| 04 Sep - 10 Sep | Asiana Airlines | ||
| 04 Sep - 17 Sep | Asiana Airlines | ||
| 18 Sep - 25 Sep | Asiana Airlines |
Also check the deals for one-way flights from Cheju to Istanbul in September.
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