AirHint found the following cheapest return flights from London (LHR) to Geneva (GVA) in December 2025 (see full year).

Return flights

02 Dec - 24 Dec	SWISS	direct
24 Dec - 07 Jan	SWISS	direct
11 Dec - 21 Dec	SWISS	direct
13 Dec - 16 Dec	SWISS	direct
02 Dec - 06 Dec	SWISS	direct
06 Dec - 10 Dec	SWISS	direct
13 Dec - 17 Dec	SWISS	direct
03 Dec - 07 Dec	SWISS	direct
10 Dec - 12 Dec	SWISS	direct
03 Dec - 03 Dec	SWISS	direct
06 Dec - 18 Dec	SWISS	direct
31 Dec - 07 Jan	SWISS	direct
16 Dec - 01 Jan	SWISS	direct
31 Dec - 01 Jan	SWISS	direct
24 Dec - 01 Jan	SWISS	direct
15 Dec - 01 Jan	SWISS	direct
24 Dec - 02 Jan	SWISS	direct
31 Dec - 02 Jan	SWISS	direct
31 Dec - 05 Jan	SWISS
22 Dec - 09 Jan	British Airways	direct

Also check the deals for one-way flights from London to Geneva 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 Geneva in December from 119€

Return flights