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

Return flights

16 Sep - 21 Sep	Air China
11 Sep - 18 Sep	Air China
18 Sep - 23 Sep	Air China
10 Sep - 16 Sep	Air China
17 Sep - 23 Sep	Air China
16 Sep - 20 Sep	Air China
18 Sep - 21 Sep	Air China
09 Sep - 16 Sep	Air China
11 Sep - 16 Sep	Air China
18 Sep - 22 Sep	Air China
27 Sep - 29 Oct	Scoot	direct
15 Sep - 12 Oct	Scoot
28 Sep - 02 Oct	Scoot	direct
27 Sep - 01 Oct	Scoot	direct
30 Sep - 03 Oct	Scoot	direct
30 Sep - 06 Oct	AirAsia X
24 Sep - 06 Oct	AirAsia X
25 Sep - 06 Oct	AirAsia X
23 Sep - 06 Oct	AirAsia X
14 Sep - 11 Oct	Scoot

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 $234

Return flights