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

Return flights

01 Dec - 27 Dec	China Eastern
01 Dec - 08 Dec	Jetstar
03 Dec - 30 Dec	Jetstar
10 Dec - 31 Dec	Jetstar
11 Dec - 31 Dec	Jetstar
11 Dec - 30 Dec	Jetstar
03 Dec - 19 Jan	Jetstar
15 Dec - 29 Dec	Garuda Indonesia
15 Dec - 19 Jan	Turkish Airlines
27 Dec - 27 Jan	Turkish Airlines
11 Dec - 03 Jan	Jetstar
10 Dec - 13 Jan	Jetstar
10 Dec - 14 Jan	Jetstar
25 Dec - 05 Jan	China Eastern
26 Dec - 19 Jan	China Eastern
28 Dec - 24 Jan	Turkish Airlines
15 Dec - 15 Jan	Garuda Indonesia
06 Dec - 22 Dec	Jetstar
17 Dec - 24 Dec	Jetstar
08 Dec - 21 Dec	Jetstar

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 854€

Return flights