AirHint found the following cheapest return flights from London (LCY) to Vienna (VIE) in December 2025 (see full year).

Return flights

06 Dec - 10 Dec	SWISS
02 Dec - 11 Dec	SWISS
10 Dec - 15 Dec	SWISS
03 Dec - 10 Dec	SWISS
09 Dec - 12 Dec	SWISS
02 Dec - 10 Dec	SWISS
06 Dec - 12 Dec	SWISS
06 Dec - 11 Dec	SWISS
06 Dec - 09 Dec	SWISS
02 Dec - 09 Dec	SWISS
15 Dec - 19 Jan	Lufthansa
15 Dec - 10 Jan	Lufthansa
15 Dec - 07 Jan	Lufthansa
29 Dec - 07 Jan	Lufthansa
23 Dec - 02 Jan	Lufthansa
29 Dec - 02 Jan	Lufthansa
30 Dec - 02 Jan	Lufthansa
26 Dec - 06 Jan	KLM
12 Dec - 12 Jan	KLM
22 Dec - 08 Jan	Lufthansa

Also check the deals for one-way flights from London to Vienna 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 London to Vienna in December from $241

Return flights