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

Return flights

13 Aug - 24 Aug	Centrum Air
01 Aug - 01 Sep	Kuwait Airways
25 Aug - 04 Sep	Air Astana
28 Aug - 16 Sep	Air Astana
15 Aug - 23 Aug	Air Astana
07 Aug - 17 Aug	Air Astana
07 Aug - 23 Aug	Air Astana
08 Aug - 23 Aug	Air Astana
25 Aug - 31 Aug	Air Astana
01 Aug - 12 Aug	Air Astana
25 Aug - 03 Sep	Air Astana
12 Aug - 19 Aug	Air Astana
20 Aug - 28 Aug	Air Astana
06 Aug - 12 Aug	Air Astana
31 Aug - 06 Sep	Air Astana
31 Aug - 13 Sep	Air Astana
28 Aug - 10 Sep	Air Astana
18 Aug - 05 Sep	Air Arabia
25 Aug - 04 Sep	Asiana Airlines	direct
25 Aug - 03 Sep	Asiana Airlines	direct

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

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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Cheapest return flights from Istanbul to Seoul in August from $708

Return flights