Cheapest return flights from Istanbul to Seoul in September from $632

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

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

Return flights

04 Sep - 09 Sep China Southern
25 Sep - 09 Oct Air Astana
08 Sep - 15 Sep Air Astana
09 Sep - 25 Sep Air Astana
01 Sep - 11 Sep Air Astana
04 Sep - 08 Sep Air Astana
21 Sep - 28 Sep Air Astana
21 Sep - 12 Oct Air Astana
13 Sep - 16 Sep Air Astana
18 Sep - 24 Sep Air Astana
14 Sep - 12 Oct Air Astana
01 Sep - 07 Sep Air Astana
04 Sep - 21 Oct KLM
01 Sep - 22 Sep Korean Air direct
14 Sep - 12 Oct Turkish Airlines direct
21 Sep - 12 Oct Turkish Airlines direct
26 Sep - 05 Oct Qatar Airways
25 Sep - 09 Oct Turkish Airlines direct

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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