AirHint found the following cheapest return flights from Osaka (KIX) to Istanbul (IST) in September 2026 (see full year).

Return flights

16 Sep - 23 Sep	Singapore Airlines
17 Sep - 23 Sep	Singapore Airlines
01 Sep - 06 Sep	Singapore Airlines
01 Sep - 07 Sep	Singapore Airlines
11 Sep - 21 Sep	Singapore Airlines
19 Sep - 23 Sep	Singapore Airlines
18 Sep - 23 Sep	Singapore Airlines
01 Sep - 04 Sep	Singapore Airlines
19 Sep - 27 Sep	Singapore Airlines
20 Sep - 27 Sep	Singapore Airlines
30 Sep - 04 Oct	Singapore Airlines
30 Sep - 04 Oct	Turkish Airlines	direct
28 Sep - 03 Oct	China Southern

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 $588

Return flights