Cheapest return flights from Seoul to Istanbul in January from $423

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

Return flights

27 Jan - 08 Feb China Eastern
24 Jan - 01 Feb Air China
26 Jan - 29 Jan China Southern
19 Jan - 29 Jan China Southern
23 Jan - 29 Jan China Southern
21 Jan - 29 Jan China Southern
21 Jan - 03 Feb China Southern
14 Jan - 03 Feb China Southern
26 Jan - 03 Feb China Southern
28 Jan - 03 Feb China Southern
21 Jan - 05 Feb China Southern
26 Jan - 05 Feb China Southern
14 Jan - 20 Jan China Southern
13 Jan - 23 Jan Air China
23 Jan - 27 Jan China Southern
19 Jan - 27 Jan China Southern
30 Jan - 05 Feb China Southern
13 Jan - 21 Jan Air China
21 Jan - 19 Feb China Southern
21 Jan - 24 Jan China Southern

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

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