AirHint found the following cheapest one-way flights from Seoul (ICN) to Istanbul (IST) in August 2025 (see full year).

One-Way flights

29 Aug	China Southern
19 Aug	Etihad Airways
26 Aug	Etihad Airways
28 Aug	Etihad Airways
21 Aug	Etihad Airways
06 Aug	China Eastern
05 Aug	China Eastern
10 Aug	China Southern
12 Aug	China Southern
13 Aug	China Southern

Also check the deals for return flights from Seoul to Istanbul 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 one-way flights from Seoul to Istanbul in August from 194€

One-Way flights