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

Return flights

07 Jan - 20 Jan	Air China
17 Jan - 23 Jan	China Southern
27 Jan - 06 Feb	China Southern
25 Jan - 03 Feb	Air China
25 Jan - 05 Feb	Air China
04 Jan - 17 Jan	Air China
19 Jan - 23 Jan	ANA
26 Jan - 30 Jan	ANA
24 Jan - 30 Jan	ANA
19 Jan - 25 Jan	ANA
05 Jan - 11 Jan	ANA
17 Jan - 25 Jan	ANA

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 $596

Return flights