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

Return flights

04 Sep - 11 Sep	Turkish Airlines
16 Sep - 23 Sep	Turkish Airlines
18 Sep - 28 Sep	Turkish Airlines
18 Sep - 25 Sep	Turkish Airlines
04 Sep - 22 Sep	Turkish Airlines
04 Sep - 18 Sep	Turkish Airlines
10 Sep - 16 Sep	Turkish Airlines
12 Sep - 17 Sep	Finnair
06 Sep - 14 Sep	Finnair
07 Sep - 16 Sep	Finnair
20 Sep - 01 Oct	Emirates
25 Sep - 02 Oct	Emirates
30 Sep - 08 Oct	Cathay Pacific
30 Sep - 15 Oct	Emirates
20 Sep - 04 Oct	Air France
18 Sep - 04 Oct	Air France
21 Sep - 05 Oct	Finnair
24 Sep - 05 Oct	Finnair
19 Sep - 05 Oct	HK Express
26 Sep - 09 Oct	HK Express

Also check the deals for one-way flights from Hong Kong to Madrid in September.

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 September from $457

Return flights