Cheapest return flights from Istanbul to Seoul in December from $499

AirHint found the following cheapest return flights from Istanbul (IST) to Seoul (ICN) in December 2025 (see full year).

Return flights

15 Dec - 11 Jan China Southern
13 Dec - 23 Dec China Southern
02 Dec - 10 Dec China Southern
16 Dec - 19 Dec China Southern
13 Dec - 19 Dec China Southern
05 Dec - 12 Dec China Southern
09 Dec - 23 Dec China Southern
10 Dec - 14 Dec China Southern
06 Dec - 12 Dec China Southern
04 Dec - 14 Dec China Southern
09 Dec - 15 Dec China Southern
04 Dec - 17 Jan MIAT Mongolian Airlines
13 Dec - 04 Jan China Southern
19 Dec - 05 Jan China Southern
20 Dec - 05 Jan China Southern
27 Dec - 02 Jan China Southern
26 Dec - 02 Jan China Southern
25 Dec - 03 Jan MIAT Mongolian Airlines
19 Dec - 04 Jan China Southern
20 Dec - 06 Jan China Southern

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

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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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