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

Return flights

16 Sep - 24 Sep	Air China
17 Sep - 24 Sep	Air France
18 Sep - 25 Sep	Air France
12 Sep - 24 Sep	Air China
11 Sep - 24 Sep	Air China
12 Sep - 19 Sep	Air China
07 Sep - 17 Sep	Finnair
22 Sep - 02 Oct	Finnair
09 Sep - 17 Sep	Finnair
12 Sep - 21 Sep	Air China
11 Sep - 23 Sep	Air France
20 Sep - 04 Oct	Air France
25 Sep - 02 Oct	Emirates
20 Sep - 03 Oct	Emirates
24 Sep - 03 Oct	Emirates
25 Sep - 03 Oct	Emirates
18 Sep - 03 Oct	Emirates
21 Sep - 05 Oct	Emirates
23 Sep - 08 Oct	Emirates
25 Sep - 08 Oct	Emirates

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 459€

Return flights