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

Return flights

01 Dec - 11 Dec	British Airways
30 Dec - 27 Jan	British Airways
25 Dec - 22 Jan	British Airways
01 Dec - 15 Dec	British Airways
01 Dec - 08 Dec	British Airways
05 Dec - 19 Dec	British Airways
31 Dec - 28 Jan	British Airways
04 Dec - 18 Dec	British Airways
26 Dec - 18 Jan	British Airways
30 Dec - 13 Jan	British Airways
29 Dec - 12 Jan	British Airways
26 Dec - 16 Jan	British Airways
26 Dec - 15 Jan	British Airways
25 Dec - 16 Jan	British Airways
27 Dec - 14 Jan	British Airways
04 Dec - 20 Dec	Lufthansa
15 Dec - 20 Dec	Lufthansa
06 Dec - 20 Dec	Finnair
23 Dec - 30 Dec	Malaysia Airlines

Also check the deals for one-way flights from Newcastle to Sydney 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 Newcastle to Sydney in December from 840€

Return flights