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

Return flights

13 Jan - 19 Jan	China Southern
12 Jan - 19 Jan	China Southern
12 Jan - 18 Jan	China Southern
02 Jan - 16 Jan	China Southern
20 Jan - 30 Jan	AJet
07 Jan - 19 Jan	China Southern
01 Jan - 13 Jan	Centrum Air
19 Jan - 30 Jan	Centrum Air
22 Jan - 30 Jan	Centrum Air
01 Jan - 06 Jan	Centrum Air
16 Jan - 02 Feb	LOT
16 Jan - 04 Feb	LOT
29 Jan - 06 Feb	China Southern
24 Jan - 03 Feb	LOT
22 Jan - 02 Feb	LOT
17 Jan - 01 Feb	LOT
16 Jan - 01 Feb	LOT
26 Jan - 05 Feb	Air Astana
16 Jan - 20 Feb	Etihad Airways
25 Jan - 03 Feb	AirAsia X

Also check the deals for one-way flights from Istanbul to Seoul 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 Istanbul to Seoul in January from 430€

Return flights