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

Return flights

08 Jan - 19 Jan	China Southern
17 Jan - 28 Jan	China Southern
06 Jan - 16 Jan	China Southern
17 Jan - 30 Jan	China Southern
16 Jan - 31 Jan	Air China
16 Jan - 27 Jan	Air China
16 Jan - 29 Jan	Air China
18 Jan - 27 Jan	Air China

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 $825

Return flights