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

Return flights

13 Sep - 16 Sep	Peach
05 Sep - 10 Sep	Peach
01 Sep - 05 Sep	Eastar Jet
10 Sep - 14 Sep	Peach
08 Sep - 15 Sep	China Eastern
12 Sep - 21 Sep	Peach
08 Sep - 25 Sep	China Southern
08 Sep - 23 Sep	China Southern
12 Sep - 18 Sep	China Southern
12 Sep - 20 Sep	China Southern
28 Sep - 05 Oct	Singapore Airlines
27 Sep - 05 Oct	Singapore Airlines
26 Sep - 03 Oct	Singapore Airlines
27 Sep - 03 Oct	Singapore Airlines
11 Sep - 01 Oct	China Southern
27 Sep - 01 Oct	Singapore Airlines
30 Sep - 05 Oct	Etihad Airways
30 Sep - 06 Oct	Etihad Airways
30 Sep - 07 Oct	KLM
26 Sep - 02 Oct	Etihad Airways

Also check the deals for one-way flights from Osaka to Istanbul in September.

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 September from 438€

Return flights