Cheapest return flights from Istanbul to Seoul in September from $464

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

Return flights

02 Sep - 09 Sep MIAT Mongolian Airlines
21 Sep - 28 Sep MIAT Mongolian Airlines
09 Sep - 14 Sep MIAT Mongolian Airlines
02 Sep - 14 Sep MIAT Mongolian Airlines
02 Sep - 07 Sep MIAT Mongolian Airlines
14 Sep - 23 Sep MIAT Mongolian Airlines
04 Sep - 18 Sep MIAT Mongolian Airlines
04 Sep - 17 Sep MIAT Mongolian Airlines
04 Sep - 14 Sep MIAT Mongolian Airlines
09 Sep - 22 Sep MIAT Mongolian Airlines
02 Sep - 27 Oct China Southern
07 Sep - 12 Oct MIAT Mongolian Airlines
23 Sep - 08 Oct MIAT Mongolian Airlines
14 Sep - 12 Oct MIAT Mongolian Airlines
28 Sep - 12 Oct MIAT Mongolian Airlines
21 Sep - 14 Oct MIAT Mongolian Airlines
30 Sep - 19 Oct MIAT Mongolian Airlines
14 Sep - 13 Oct MIAT Mongolian Airlines
21 Sep - 12 Oct MIAT Mongolian Airlines
29 Sep - 06 Oct Turkmenistan Airlines

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

Skyscanner

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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