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

Return flights

01 Dec - 07 Dec	British Airways
07 Dec - 14 Dec	British Airways
29 Dec - 20 Jan	easyJet
01 Dec - 08 Dec	Wizz Air Malta
24 Dec - 18 Jan	British Airways
15 Dec - 26 Jan	Wizz Air Malta
04 Dec - 11 Dec	British Airways
15 Dec - 25 Jan	Ryanair
26 Dec - 14 Jan	British Airways
29 Dec - 19 Jan	Wizz Air Malta
14 Dec - 14 Jan	Aer Lingus
22 Dec - 12 Jan	Ryanair
06 Dec - 13 Dec	Ryanair
12 Dec - 14 Jan	easyJet
20 Dec - 10 Jan	Ryanair
05 Dec - 12 Dec	British Airways
09 Dec - 16 Dec	easyJet
11 Dec - 18 Dec	easyJet
01 Dec - 27 Dec	Wizz Air Malta
10 Dec - 16 Dec	easyJet

Also check the deals for one-way flights from Glasgow 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 Glasgow to Sydney in December from 899€

Return flights