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

Return flights

23 Sep - 15 Oct	Vueling Airlines
17 Sep - 01 Oct	Air China
24 Sep - 01 Oct	Air China
23 Sep - 17 Oct	Air China
26 Sep - 16 Oct	China Eastern
24 Sep - 02 Oct	Vueling Airlines
16 Sep - 01 Oct	easyJet
15 Sep - 24 Sep	T'way Air
16 Sep - 02 Oct	easyJet
24 Sep - 09 Oct	Shenzhen Airlines
27 Sep - 07 Oct	Air Europa
22 Sep - 27 Sep	T'way Air
16 Sep - 22 Sep	Ryanair
23 Sep - 27 Sep	Air China
16 Sep - 30 Sep	Ryanair
22 Sep - 29 Sep	T'way Air
15 Sep - 22 Sep	T'way Air
16 Sep - 27 Sep	Ryanair
21 Sep - 29 Sep	Vueling Airlines
15 Sep - 26 Sep	T'way Air

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 617€

Return flights