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

Return flights

08 Dec - 11 Dec	Jetstar
26 Dec - 24 Jan	Air China
08 Dec - 13 Dec	Air China
09 Dec - 11 Dec	AirAsia X
08 Dec - 12 Dec	Jetstar
08 Dec - 15 Dec	Jetstar
09 Dec - 16 Dec	Air China
27 Dec - 27 Jan	Air China
07 Dec - 14 Dec	Hainan Airlines
11 Dec - 23 Dec	Air China
09 Dec - 12 Dec	AirAsia X
30 Dec - 17 Jan	AirAsia X
09 Dec - 23 Dec	AirAsia X
30 Dec - 13 Jan	Air China
30 Dec - 16 Jan	AirAsia X
28 Dec - 11 Jan	Air China
30 Dec - 14 Jan	Jetstar
16 Dec - 05 Jan	China Eastern
26 Dec - 20 Jan	China Southern
28 Dec - 13 Jan	Air China

Also check the deals for one-way flights from Sydney to Madrid 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 Sydney to Madrid in December from 1072€

Return flights