Cheapest one-way flights from Cheju to Istanbul in October from $768

AirHint found the following cheapest one-way flights from Cheju (CJU) to Istanbul (IST) in October 2025 (see full year).

One-Way flights

30 Oct Asiana Airlines
06 Oct Korean Air

Also check the deals for return flights from Cheju to Istanbul in October.

Skyscanner

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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