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

Return flights

12 Aug - 24 Aug	Air China
11 Aug - 23 Aug	Air China
12 Aug - 22 Aug	Air China
05 Aug - 20 Aug	Air China
19 Aug - 31 Aug	Air China
18 Aug - 26 Aug	China Eastern
05 Aug - 13 Aug	Air China
05 Aug - 10 Aug	Air China
05 Aug - 12 Aug	Air China
11 Aug - 18 Aug	Air China
31 Aug - 14 Sep	Finnair
31 Aug - 07 Sep	Finnair
24 Aug - 07 Sep	Air China
26 Aug - 03 Sep	Air China
27 Aug - 12 Sep	Hong Kong Airlines
20 Aug - 01 Sep	Hong Kong Airlines
31 Aug - 10 Sep	Finnair
31 Aug - 05 Sep	Air China
31 Aug - 08 Sep	Finnair
27 Aug - 04 Sep	SWISS

Also check the deals for one-way flights from Hong Kong to Madrid 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 Madrid in August from 535€

Return flights