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

Return flights

16 Sep - 21 Sep	ANA
20 Sep - 24 Sep	ANA
09 Sep - 17 Sep	ANA
10 Sep - 24 Sep	ANA
10 Sep - 17 Sep	ANA
02 Sep - 08 Sep	ANA
09 Sep - 24 Sep	ANA
21 Sep - 01 Oct	ANA
02 Sep - 13 Sep	ANA
29 Sep - 06 Oct	Japan Airlines
11 Sep - 24 Sep	ANA
18 Sep - 09 Oct	Turkish Airlines
02 Sep - 20 Sep	ANA
27 Sep - 03 Oct	Japan Airlines
27 Sep - 04 Oct	Japan Airlines
15 Sep - 05 Oct	Japan Airlines

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Osaka to Istanbul in September from 936€

Return flights