Cheapest return flights from Seoul to Istanbul in September from $485

Best time to book flights for Seoul (ICN) to Istanbul (IST) flights at AirHint

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

Return flights

08 Sep - 16 Sep MIAT Mongolian Airlines
11 Sep - 14 Sep Air China
04 Sep - 14 Sep Air China
10 Sep - 19 Sep China Southern
08 Sep - 19 Sep China Southern
23 Sep - 30 Sep MIAT Mongolian Airlines
25 Sep - 12 Oct MIAT Mongolian Airlines
12 Sep - 20 Sep China Southern
04 Sep - 13 Sep China Southern
07 Sep - 19 Sep China Southern
02 Sep - 05 Sep China Southern
24 Sep - 07 Oct MIAT Mongolian Airlines
28 Sep - 13 Oct Air Astana
26 Sep - 18 Oct Air Astana
24 Sep - 06 Oct Air Astana
26 Sep - 04 Oct Air Astana
21 Sep - 11 Oct Air Astana
26 Sep - 11 Oct Air Astana
26 Sep - 10 Oct Air Astana
28 Sep - 12 Oct Air Astana

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

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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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