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

Return flights

02 Dec - 20 Jan	easyJet
08 Dec - 13 Jan	easyJet
29 Dec - 20 Jan	easyJet
29 Dec - 19 Jan	easyJet
26 Dec - 19 Jan	easyJet
26 Dec - 16 Jan	easyJet
31 Dec - 16 Jan	British Airways
03 Dec - 07 Jan	easyJet
01 Dec - 12 Jan	British Airways
27 Dec - 16 Jan	easyJet
01 Dec - 09 Dec	British Airways
08 Dec - 29 Dec	easyJet
01 Dec - 08 Dec	easyJet
10 Dec - 29 Dec	Wizz Air Malta
02 Dec - 09 Dec	easyJet
03 Dec - 17 Dec	Ryanair
05 Dec - 07 Dec	Wizz Air Malta
07 Dec - 21 Dec	easyJet
18 Dec - 29 Dec	easyJet
18 Dec - 25 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 745€

Return flights