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

One-Way flights

31 Aug	Hainan Airlines
18 Aug	China Eastern
16 Aug	China Eastern
21 Aug	Hong Kong Airlines
13 Aug	China Eastern
06 Aug	China Eastern
01 Aug	T'way Air
27 Aug	China Eastern
11 Aug	HK Express
26 Aug	HK Express

Also check the deals for return 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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Cheapest one-way flights from Hong Kong to Barcelona in August from 288€

One-Way flights