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

Return flights

19 Sep - 04 Oct	Etihad Airways
17 Sep - 21 Sep	Emirates
19 Sep - 28 Sep	Emirates
11 Sep - 27 Sep	Emirates
12 Sep - 21 Sep	Emirates
13 Sep - 02 Oct	Emirates
19 Sep - 27 Sep	Emirates
28 Sep - 05 Oct	Emirates
20 Sep - 05 Oct	Emirates
04 Sep - 13 Sep	Turkish Airlines
28 Sep - 10 Oct	Etihad Airways
26 Sep - 10 Oct	Etihad Airways
01 Sep - 08 Sep	Qatar Airways
01 Sep - 30 Sep	Qatar Airways
04 Sep - 15 Sep	Emirates
26 Sep - 11 Oct	Etihad Airways
20 Sep - 06 Oct	Emirates
24 Sep - 22 Oct	Air Europa

Also check the deals for one-way flights from Singapore 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 Singapore to Madrid in September from 553€

Return flights