AirHint found the following cheapest return flights from Osaka (KIX) to Istanbul (IST) in August 2025 (see full year).

Return flights

22 Aug - 25 Aug	Air China
20 Aug - 31 Aug	Peach
20 Aug - 12 Sep	Peach
25 Aug - 19 Sep	Peach
28 Aug - 11 Sep	Eastar Jet
25 Aug - 20 Sep	China Southern
31 Aug - 06 Sep	Air China
18 Aug - 25 Aug	China Southern
25 Aug - 03 Sep	China Southern
25 Aug - 28 Aug	China Southern
25 Aug - 01 Sep	China Southern
25 Aug - 17 Sep	China Southern
26 Aug - 04 Sep	China Eastern
27 Aug - 03 Sep	China Southern
15 Aug - 23 Aug	China Eastern
26 Aug - 29 Aug	China Southern
04 Aug - 11 Aug	Thai AirAsia X
17 Aug - 22 Aug	China Southern
14 Aug - 27 Aug	China Eastern
11 Aug - 18 Aug	Peach

Also check the deals for one-way flights from Osaka to Istanbul 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 Osaka to Istanbul in August from 390€

Return flights