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

Return flights

18 Sep - 23 Sep	Air China
07 Sep - 18 Sep	Air China
23 Sep - 21 Oct	Air China
24 Sep - 01 Oct	Etihad Airways
23 Sep - 08 Oct	Finnair
16 Sep - 21 Sep	Air China
07 Sep - 22 Sep	Finnair
18 Sep - 25 Sep	Air China
17 Sep - 25 Sep	Air China
25 Sep - 27 Oct	Finnair
11 Sep - 18 Sep	Finnair
23 Sep - 02 Oct	Wizz Air Malta
15 Sep - 28 Sep	Ryanair
16 Sep - 23 Sep	Air China
20 Sep - 05 Oct	Etihad Airways
19 Sep - 05 Oct	Etihad Airways
11 Sep - 14 Sep	Air China
29 Sep - 06 Oct	Wizz Air Malta
24 Sep - 09 Oct	Ryanair
24 Sep - 07 Oct	Air France

Also check the deals for one-way flights from Madrid to Singapore 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 Madrid to Singapore in September from 534€

Return flights