Cheapest return flights from Seoul to Istanbul in September from $509

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

Return flights

01 Sep - 29 Sep MIAT Mongolian Airlines
05 Sep - 11 Sep Air China
05 Sep - 13 Sep Air China
17 Sep - 23 Sep Air China
15 Sep - 14 Oct Air China
12 Sep - 12 Oct China Southern
13 Sep - 12 Oct China Southern
10 Sep - 24 Sep China Southern
03 Sep - 02 Oct Air China
13 Sep - 24 Sep China Southern
14 Sep - 24 Sep China Southern
18 Sep - 24 Sep China Southern
16 Sep - 15 Oct China Southern
08 Sep - 07 Oct Singapore Airlines
13 Sep - 20 Sep Singapore Airlines
10 Sep - 09 Oct Air China
01 Sep - 11 Sep Air China
03 Sep - 03 Oct China Southern
17 Sep - 17 Oct China Southern
07 Sep - 06 Oct Etihad Airways

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

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