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

Return flights

01 Aug - 12 Sep	Etihad Airways
11 Aug - 27 Aug	British Airways
05 Aug - 29 Aug	British Airways
16 Aug - 06 Sep	British Airways
13 Aug - 20 Aug	British Airways
13 Aug - 26 Aug	British Airways
06 Aug - 20 Aug	AirAsia
11 Aug - 22 Aug	British Airways
05 Aug - 19 Aug	Turkish Airlines
13 Aug - 31 Aug	British Airways
05 Aug - 12 Aug	British Airways
21 Aug - 28 Aug	British Airways
27 Aug - 06 Sep	British Airways
28 Aug - 06 Sep	British Airways
21 Aug - 01 Sep	Qatar Airways
29 Aug - 07 Sep	Etihad Airways
30 Aug - 07 Sep	Etihad Airways
19 Aug - 26 Sep	Emirates

Also check the deals for one-way flights from Kuala Lumpur 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 Kuala Lumpur to Barcelona in August from 624€

Return flights