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

Return flights

01 Sep - 06 Sep	Xiamen Airlines
08 Sep - 11 Sep	Xiamen Airlines
08 Sep - 15 Sep	Xiamen Airlines
01 Sep - 08 Sep	Xiamen Airlines
03 Sep - 07 Sep	Xiamen Airlines
12 Sep - 15 Sep	Xiamen Airlines
21 Sep - 28 Sep	Xiamen Airlines
22 Sep - 26 Sep	Shanghai Airlines
12 Sep - 20 Sep	Xiamen Airlines
20 Sep - 28 Sep	Xiamen Airlines
29 Sep - 08 Oct	ANA
25 Sep - 07 Oct	ANA
24 Sep - 07 Oct	ANA
25 Sep - 02 Oct	ANA
30 Sep - 08 Oct	ANA
30 Sep - 06 Oct	ANA
25 Sep - 05 Oct	ANA
25 Sep - 03 Oct	ANA
29 Sep - 01 Oct	ANA
24 Sep - 01 Oct	ANA

Also check the deals for one-way flights from Taipei 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 Taipei to Osaka in September from $323

Return flights