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

Return flights

30 Sep - 08 Oct	Greater Bay Airlines
20 Sep - 28 Sep	Asiana Airlines
29 Sep - 06 Oct	Greater Bay Airlines
30 Sep - 06 Oct	Greater Bay Airlines
23 Sep - 30 Sep	T'way Air
30 Sep - 07 Oct	Greater Bay Airlines
27 Sep - 06 Oct	Thai AirAsia X
25 Sep - 30 Sep	Eastar Jet
24 Sep - 01 Oct	Air China
26 Sep - 28 Sep	Asiana Airlines
26 Sep - 30 Sep	Lufthansa
27 Sep - 30 Sep	Lufthansa
24 Sep - 06 Oct	Air France
30 Sep - 04 Oct	KLM
20 Sep - 21 Oct	KLM
26 Sep - 29 Sep	Lufthansa
27 Sep - 29 Sep	Etihad Airways
20 Sep - 22 Sep	Etihad Airways
23 Sep - 03 Oct	KLM

Also check the deals for one-way flights from Osaka to Barcelona 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 Barcelona in September from $940

Return flights