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

Return flights

03 Dec - 09 Dec	KLM
09 Dec - 16 Dec	KLM
04 Dec - 14 Dec	Ryanair
04 Dec - 11 Dec	Ryanair
03 Dec - 12 Dec	Iberia
02 Dec - 07 Dec	KLM
09 Dec - 29 Dec	Etihad Airways
05 Dec - 08 Dec	Ryanair
05 Dec - 14 Dec	Ryanair
05 Dec - 10 Dec	Ryanair
16 Dec - 14 Jan	China Eastern
09 Dec - 02 Jan	Air China
11 Dec - 02 Jan	Iberia
16 Dec - 12 Jan	Ryanair
30 Dec - 10 Jan	China Southern
29 Dec - 11 Jan	Sichuan Airlines
29 Dec - 05 Jan	Sichuan Airlines
13 Dec - 04 Jan	China Southern
30 Dec - 09 Jan	China Southern
23 Dec - 06 Jan	China Southern

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

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 December from $651

Return flights