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

Return flights

16 Sep - 15 Oct	Air China
02 Sep - 09 Sep	Air China
16 Sep - 23 Sep	Wizz Air Malta
22 Sep - 02 Oct	Wizz Air Malta
10 Sep - 23 Sep	Vueling Airlines
06 Sep - 18 Sep	Air China
05 Sep - 18 Sep	Air China
17 Sep - 22 Sep	Air China
04 Sep - 17 Sep	Air China
06 Sep - 17 Sep	Air China
08 Sep - 22 Sep	Air China
04 Sep - 11 Sep	Air China
27 Sep - 12 Oct	Ryanair
15 Sep - 02 Oct	Shenzhen Airlines
30 Sep - 14 Oct	Vueling Airlines
27 Sep - 13 Oct	Wizz Air Malta
16 Sep - 01 Oct	Air China
24 Sep - 25 Oct	Ryanair
16 Sep - 02 Oct	China Eastern
13 Sep - 10 Oct	Air China

Also check the deals for one-way flights from Barcelona 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 Barcelona to Osaka in September from $633

Return flights