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

Return flights

31 Aug - 14 Sep	Finnair
24 Aug - 08 Sep	Finnair
29 Aug - 12 Sep	Finnair
31 Aug - 13 Sep	Finnair
30 Aug - 14 Sep	Finnair
28 Aug - 20 Sep	Finnair
18 Aug - 30 Sep	Air France
24 Aug - 10 Sep	Finnair
31 Aug - 08 Sep	Finnair
23 Aug - 10 Sep	Finnair
14 Aug - 24 Aug	Air France
25 Aug - 31 Aug	Etihad Airways
12 Aug - 19 Aug	Etihad Airways
15 Aug - 22 Aug	Ryanair
07 Aug - 12 Aug	Air China
22 Aug - 24 Aug	Etihad Airways
22 Aug - 31 Aug	Ryanair
05 Aug - 15 Aug	Air China
18 Aug - 31 Aug	Ryanair
07 Aug - 17 Aug	Etihad Airways

Also check the deals for one-way flights from Madrid to Singapore in August.

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 August from 571€

Return flights