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

Return flights

01 Dec - 08 Dec	Wizz Air Malta
02 Dec - 09 Dec	British Airways
29 Dec - 29 Jan	Ryanair
07 Dec - 14 Dec	easyJet
03 Dec - 10 Dec	easyJet
29 Dec - 20 Jan	Ryanair
04 Dec - 11 Dec	easyJet
30 Dec - 13 Jan	easyJet
30 Dec - 17 Jan	easyJet
03 Dec - 07 Jan	easyJet
29 Dec - 24 Jan	Ryanair
26 Dec - 19 Jan	easyJet
01 Dec - 12 Dec	Wizz Air Malta
08 Dec - 15 Dec	easyJet
05 Dec - 12 Dec	easyJet
06 Dec - 13 Dec	Ryanair
01 Dec - 15 Dec	Wizz Air Malta
14 Dec - 08 Jan	easyJet
22 Dec - 06 Jan	Wizz Air Malta
26 Dec - 16 Jan	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 $1073

Return flights