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

Return flights

19 Sep - 22 Sep	ANA
13 Sep - 16 Sep	ANA
05 Sep - 08 Sep	ANA
11 Sep - 14 Sep	ANA
27 Sep - 30 Sep	ANA
11 Sep - 17 Sep	ANA
05 Sep - 07 Sep	ANA
18 Sep - 22 Sep	ANA
17 Sep - 20 Sep	ANA
12 Sep - 19 Sep	ANA
29 Sep - 06 Oct	ANA
28 Sep - 02 Oct	Japan Airlines
27 Sep - 11 Oct	Japan Airlines

Also check the deals for one-way flights from Osaka to Singapore 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 Singapore in September from 508€

Return flights