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

One-Way flights

05 Aug	Scoot Tigerair
19 Aug	Hainan Airlines
24 Aug	Hainan Airlines
06 Aug	China Eastern
31 Aug	Hainan Airlines
12 Aug	Hainan Airlines
17 Aug	HK Express
26 Aug	Hainan Airlines
01 Aug	Hainan Airlines
13 Aug	HK Express

Also check the deals for return 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 one-way flights from Hong Kong to Madrid in August from $366

One-Way flights