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

Return flights

11 Sep - 18 Sep	Finnair
07 Sep - 19 Sep	Finnair
18 Sep - 30 Sep	Finnair
08 Sep - 14 Sep	Finnair
23 Sep - 29 Sep	Finnair
08 Sep - 25 Sep	Finnair
11 Sep - 26 Sep	Finnair
11 Sep - 28 Sep	Finnair
07 Sep - 24 Sep	Finnair
07 Sep - 25 Sep	Finnair
17 Sep - 08 Oct	Finnair
24 Sep - 09 Oct	Air France
24 Sep - 07 Oct	Air France
16 Sep - 14 Oct	KLM
25 Sep - 09 Oct	Finnair
24 Sep - 03 Oct	Ryanair
27 Sep - 08 Oct	KLM
29 Sep - 13 Oct	Etihad Airways
26 Sep - 05 Oct	Etihad Airways
22 Sep - 04 Oct	Sichuan Airlines

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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Madrid to Singapore in September from 571€

Return flights