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

Return flights

19 Sep - 23 Sep	Air China
07 Sep - 10 Sep	T'way Air
22 Sep - 28 Sep	Air China
17 Sep - 23 Sep	Air China
10 Sep - 17 Sep	Air China
11 Sep - 22 Sep	T'way Air
23 Sep - 29 Sep	T'way Air
11 Sep - 17 Sep	T'way Air
19 Sep - 28 Sep	Air China
24 Sep - 28 Sep	Air China
24 Sep - 06 Oct	Air China
14 Sep - 22 Oct	T'way Air
14 Sep - 24 Oct	T'way Air
26 Sep - 08 Oct	SriLankan Airlines
24 Sep - 01 Oct	Air China
24 Sep - 07 Oct	Lufthansa
25 Sep - 13 Oct	KLM
20 Sep - 21 Oct	Air France
11 Sep - 14 Oct	Air France
28 Sep - 01 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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Cheapest return flights from Osaka to Barcelona in September from 611€

Return flights