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

Return flights

23 Sep - 23 Oct	Air China
07 Sep - 17 Sep	Ryanair
18 Sep - 24 Sep	Sichuan Airlines
20 Sep - 24 Sep	Sichuan Airlines
20 Sep - 22 Sep	Sichuan Airlines
07 Sep - 20 Sep	Sichuan Airlines
11 Sep - 20 Sep	Sichuan Airlines
03 Sep - 10 Sep	Sichuan Airlines
06 Sep - 17 Sep	Sichuan Airlines
01 Sep - 12 Sep	Hainan Airlines
02 Sep - 12 Sep	Hainan Airlines
17 Sep - 01 Oct	Sichuan Airlines
28 Sep - 03 Oct	Sichuan Airlines
20 Sep - 05 Oct	Sichuan Airlines
25 Sep - 12 Oct	Ryanair
29 Sep - 03 Oct	Aeroitalia
30 Sep - 03 Oct	Ryanair

Also check the deals for one-way flights from Rome to Osaka 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 Rome to Osaka in September from $647

Return flights