Cheapest return ICN–IST flights, September

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

Return flights

12 Sep - 19 Sep Air China
12 Sep - 16 Sep Air China
12 Sep - 20 Sep Air China
08 Sep - 21 Sep Air China
06 Sep - 11 Sep Air China
06 Sep - 19 Sep Air China
05 Sep - 13 Sep Air China
09 Sep - 23 Sep Air China
07 Sep - 11 Sep Air China
17 Sep - 23 Sep Air China
14 Sep - 12 Oct Air China
28 Sep - 12 Oct Turkmenistan Airlines
28 Sep - 05 Oct Turkmenistan Airlines
19 Sep - 02 Oct Qatar Airways
06 Sep - 23 Oct Air China
09 Sep - 09 Oct Air China
25 Sep - 02 Oct Qatar Airways
23 Sep - 05 Oct Qatar Airways
16 Sep - 07 Oct Air China
19 Sep - 07 Oct Qatar Airways

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

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