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

Return flights

19 Aug - 25 Aug	T'way Air
17 Aug - 01 Sep	T'way Air
17 Aug - 25 Aug	T'way Air
05 Aug - 11 Aug	Air China
17 Aug - 22 Aug	T'way Air
31 Aug - 15 Sep	T'way Air
17 Aug - 20 Aug	T'way Air
28 Aug - 05 Sep	T'way Air
22 Aug - 25 Aug	T'way Air
26 Aug - 30 Aug	T'way Air
07 Aug - 11 Aug	T'way Air
26 Aug - 29 Aug	T'way Air
13 Aug - 20 Aug	Air China
27 Aug - 03 Sep	Eastar Jet
27 Aug - 05 Sep	Air China
27 Aug - 09 Sep	Air China
27 Aug - 04 Sep	Air China
29 Aug - 05 Sep	T'way Air
29 Aug - 06 Sep	T'way Air
30 Aug - 07 Sep	Air China

Also check the deals for one-way flights from Osaka to Barcelona in August.

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 August from $768

Return flights