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

Return flights

22 Jan - 30 Jan	Air China
22 Jan - 31 Jan	China Southern
08 Jan - 21 Jan	Air China
24 Jan - 06 Feb	Air China
13 Jan - 21 Jan	Air China
13 Jan - 10 Feb	China Eastern
08 Jan - 18 Jan	Air China
15 Jan - 30 Jan	Air China
17 Jan - 21 Jan	Air China
15 Jan - 21 Jan	Air China
13 Jan - 18 Jan	Air China
22 Jan - 29 Jan	China Southern
20 Jan - 05 Feb	China Southern
20 Jan - 03 Feb	China Southern
22 Jan - 05 Feb	China Southern
15 Jan - 01 Feb	Air China
20 Jan - 04 Feb	Air China
21 Jan - 03 Feb	China Southern
29 Jan - 05 Feb	China Southern
21 Jan - 05 Feb	China Southern

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 360€

Return flights