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

Return flights

21 Sep - 07 Oct	Etihad Airways
23 Sep - 30 Sep	Qatar Airways
24 Sep - 29 Sep	Emirates
18 Sep - 29 Sep	Emirates
26 Sep - 30 Sep	Turkish Airlines
30 Sep - 12 Oct	Etihad Airways
20 Sep - 27 Sep	Air India
28 Sep - 10 Oct	Qatar Airways
24 Sep - 26 Sep	Iberia
19 Sep - 28 Sep	Emirates
19 Sep - 26 Sep	Etihad Airways
27 Sep - 11 Oct	Air India
27 Sep - 01 Oct	Qatar Airways
20 Sep - 04 Oct	Emirates
20 Sep - 06 Oct	Emirates
25 Sep - 28 Sep	Lufthansa
29 Sep - 09 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 $620

Return flights