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

Return flights

02 Dec - 15 Dec	Turkish Airlines
03 Dec - 04 Jan	Turkish Airlines
02 Dec - 14 Dec	Turkish Airlines
02 Dec - 09 Dec	Turkish Airlines
11 Dec - 18 Dec	Air China
31 Dec - 07 Jan	Air China
26 Dec - 10 Jan	Air China
01 Dec - 05 Dec	Air China
26 Dec - 13 Jan	Air China
26 Dec - 12 Jan	Air China
01 Dec - 09 Dec	Cathay Pacific
29 Dec - 16 Jan	Air China
09 Dec - 16 Dec	Air China
05 Dec - 16 Dec	Air China
26 Dec - 17 Jan	Air China
27 Dec - 17 Jan	Air China
22 Dec - 31 Jan	Turkish Airlines
18 Dec - 06 Jan	Air China
13 Dec - 20 Dec	Air China
17 Dec - 25 Dec	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 1034€

Return flights