AirHint found the following cheapest return flights from Seoul (ICN) to Istanbul (IST) in January 2026 (see full year).

Return flights

19 Jan - 25 Jan	China Eastern
19 Jan - 26 Jan	China Eastern
01 Jan - 16 Jan	China Eastern
03 Jan - 11 Jan	Air China
13 Jan - 16 Jan	Air China
17 Jan - 28 Jan	Air China
08 Jan - 16 Jan	Air China
03 Jan - 09 Jan	Air China
13 Jan - 21 Jan	Air China
03 Jan - 14 Jan	Air China
13 Jan - 04 Feb	Air China
29 Jan - 13 Feb	Air China
28 Jan - 01 Feb	Etihad Airways
18 Jan - 01 Feb	Etihad Airways
20 Jan - 03 Feb	Etihad Airways
21 Jan - 03 Feb	Etihad Airways
21 Jan - 02 Feb	China Southern
21 Jan - 01 Feb	Etihad Airways
28 Jan - 03 Feb	Etihad Airways
29 Jan - 03 Feb	Etihad Airways

Also check the deals for one-way flights from Seoul to Istanbul in January.

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 return flights from Seoul to Istanbul in January from 342€

Return flights