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

Return flights

27 Jul - 30 Jul	China Southern
03 Jul - 11 Jul	ANA
14 Jul - 25 Jul	ANA
20 Jul - 01 Aug	China Southern
17 Jul - 23 Jul	China Southern
01 Jul - 11 Jul	China Southern
15 Jul - 25 Jul	China Southern
25 Jul - 31 Jul	Air China
07 Jul - 16 Jul	ANA
11 Jul - 18 Jul	ANA
30 Jul - 06 Aug	ANA
02 Jul - 23 Jul	ANA

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

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 Seoul to Istanbul in July from $967

Return flights