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

Return flights

04 Sep - 08 Sep	KLM
04 Sep - 17 Sep	KLM
04 Sep - 11 Sep	KLM
17 Sep - 24 Sep	KLM
11 Sep - 18 Sep	KLM
11 Sep - 15 Sep	KLM
09 Sep - 16 Sep	KLM
03 Sep - 17 Sep	KLM
12 Sep - 15 Sep	KLM
15 Sep - 22 Sep	Air France
16 Sep - 21 Oct	KLM
25 Sep - 08 Oct	Hainan Airlines
27 Sep - 04 Oct	EgyptAir
27 Sep - 11 Oct	EgyptAir
27 Sep - 08 Oct	Hainan Airlines
28 Sep - 05 Oct	Hainan Airlines
29 Sep - 06 Oct	Cathay Pacific
27 Sep - 07 Oct	EgyptAir
30 Sep - 06 Oct	Air Astana
28 Sep - 08 Oct	KLM

Also check the deals for one-way flights from Beijing 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 Beijing to Madrid in September from $633

Return flights