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

Return flights

04 Dec - 14 Dec	Japan Airlines
04 Dec - 13 Dec	Japan Airlines
02 Dec - 15 Dec	Etihad Airways
02 Dec - 09 Dec	Etihad Airways
03 Dec - 07 Dec	Jetstar
01 Dec - 08 Dec	Scoot
05 Dec - 15 Dec	VietJet Air
05 Dec - 14 Dec	VietJet Air
04 Dec - 15 Dec	Jetstar
04 Dec - 12 Dec	VietJet Air
30 Dec - 15 Jan	China Eastern
03 Dec - 13 Jan	Jetstar
29 Dec - 26 Jan	VietJet Air
08 Dec - 14 Jan	VietJet Air
07 Dec - 10 Jan	VietJet Air
28 Dec - 20 Jan	Air China
07 Dec - 13 Jan	VietJet Air
10 Dec - 13 Jan	VietJet Air
11 Dec - 13 Jan	VietJet Air
12 Dec - 27 Jan	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 $920

Return flights