AirHint found the following cheapest one-way flights from Seoul (ICN) to Istanbul (IST) in May 2026 (see full year).

One-Way flights

28 May	Etihad Airways
19 May	Etihad Airways
14 May	Etihad Airways
27 May	Etihad Airways
06 May	Etihad Airways
22 May	China Southern
01 May	China Southern
29 May	Qatar Airways
04 May	Qatar Airways
18 May	Etihad Airways

Also check the deals for return flights from Seoul to Istanbul 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 one-way flights from Seoul to Istanbul in May from $308

One-Way flights