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

Return flights

18 Aug - 28 Aug	China Eastern
03 Aug - 10 Aug	KLM
18 Aug - 26 Aug	China Eastern
13 Aug - 27 Aug	China Eastern
18 Aug - 25 Aug	China Eastern
02 Aug - 16 Aug	Air China
27 Aug - 03 Sep	Air China
14 Aug - 25 Aug	China Eastern
02 Aug - 17 Aug	Air China
13 Aug - 22 Aug	China Eastern
31 Aug - 07 Sep	Finnair
13 Aug - 21 Aug	China Eastern
11 Aug - 06 Sep	Air China
26 Aug - 16 Sep	Finnair
21 Aug - 09 Sep	SWISS
28 Aug - 09 Sep	Air China
27 Aug - 12 Sep	Air China
28 Aug - 04 Sep	Air China
27 Aug - 10 Sep	Air China
25 Aug - 01 Sep	Air China

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Barcelona in August from 553€

Return flights