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

Return flights

10 Aug - 17 Aug	Turkmenistan Airlines
31 Aug - 11 Sep	Qatar Airways
06 Aug - 16 Aug	Air Arabia
21 Aug - 31 Aug	Air Arabia
09 Aug - 29 Aug	AJet
09 Aug - 22 Aug	AJet
15 Aug - 22 Aug	IndiGo
01 Aug - 12 Aug	Pegasus Airlines
09 Aug - 21 Aug	Scat Airlines
16 Aug - 30 Aug	Qatar Airways
10 Aug - 29 Aug	AJet
27 Aug - 07 Sep	Qatar Airways
11 Aug - 01 Sep	Pegasus Airlines
24 Aug - 02 Sep	Air Astana
24 Aug - 02 Sep	Korean Air	direct
31 Aug - 11 Sep	Korean Air	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 544€

Return flights