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

Return flights

11 Sep - 18 Sep	Air China
16 Sep - 23 Sep	Air China
12 Sep - 21 Sep	Air China
11 Sep - 17 Sep	Air China
19 Sep - 23 Sep	Air China
18 Sep - 24 Sep	Air China
17 Sep - 23 Sep	Air China
11 Sep - 14 Sep	Air China
15 Sep - 20 Sep	Air China
11 Sep - 16 Sep	Air China
23 Sep - 04 Oct	Air China
07 Sep - 19 Oct	Air China
03 Sep - 14 Oct	Air China
01 Sep - 30 Oct	Air China
28 Sep - 05 Oct	Etihad Airways
26 Sep - 04 Oct	Air China
27 Sep - 04 Oct	Air China
10 Sep - 22 Oct	Emirates

Also check the deals for one-way flights from Osaka to Madrid 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 Madrid in September from $809

Return flights