AirHint found the following cheapest return flights from Graz (GRZ) to London (LGW) in December 2025 (see full year).

Return flights

29 Dec - 31 Dec	British Airways	direct
31 Dec - 07 Jan	British Airways	direct
31 Dec - 05 Jan	British Airways	direct
29 Dec - 05 Jan	British Airways	direct
29 Dec - 02 Jan	British Airways	direct
29 Dec - 01 Jan	SWISS
28 Dec - 02 Jan	Eurowings
31 Dec - 02 Jan	British Airways	direct
30 Dec - 02 Jan	SunExpress
29 Dec - 04 Jan	Austrian Airlines
30 Dec - 03 Jan	Lufthansa
28 Dec - 31 Dec	Eurowings
28 Dec - 30 Dec	Eurowings

Also check the deals for one-way flights from Graz to London 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 Graz to London in December from $401

Return flights