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

Return flights

17 Sep - 23 Sep	Peach
10 Sep - 14 Sep	Spring Airlines
03 Sep - 17 Sep	China Southern
03 Sep - 11 Sep	China Southern
09 Sep - 15 Sep	Singapore Airlines
07 Sep - 20 Sep	China Eastern
01 Sep - 30 Sep	Peach
03 Sep - 06 Sep	China Southern
03 Sep - 03 Oct	China Southern
06 Sep - 14 Sep	Air China
17 Sep - 24 Sep	China Southern
30 Sep - 08 Oct	ANA
24 Sep - 01 Oct	Singapore Airlines
29 Sep - 04 Oct	KLM
27 Sep - 03 Oct	Singapore Airlines
25 Sep - 02 Oct	Thai Airways
20 Sep - 03 Oct	Singapore Airlines
27 Sep - 04 Oct	Thai Airways
28 Sep - 07 Oct	Qatar Airways
28 Sep - 04 Oct	KLM

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 $625

Return flights