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

Return flights

01 Dec - 08 Dec	British Airways
01 Dec - 06 Jan	British Airways
28 Dec - 24 Jan	British Airways
24 Dec - 31 Dec	British Airways
29 Dec - 09 Jan	Lufthansa
29 Dec - 16 Jan	British Airways
28 Dec - 11 Jan	British Airways
28 Dec - 09 Jan	Lufthansa
15 Dec - 12 Jan	Lufthansa
04 Dec - 18 Dec	British Airways
27 Dec - 10 Jan	British Airways
27 Dec - 17 Jan	British Airways
15 Dec - 15 Jan	Lufthansa
14 Dec - 29 Dec	British Airways
12 Dec - 28 Dec	British Airways
17 Dec - 31 Dec	British Airways
19 Dec - 28 Dec	British Airways

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Newcastle to Sydney in December from $1007

Return flights