AirHint found the following cheapest return flights from London (LON) to Los Angeles (LAX) in December 2025 (see full year).

Return flights

04 Dec - 10 Dec	Scandinavian Airlines
05 Dec - 09 Dec	Scandinavian Airlines
09 Dec - 16 Dec	SWISS
10 Dec - 16 Dec	SWISS
08 Dec - 15 Dec	SWISS
10 Dec - 15 Dec	Air Canada
05 Dec - 15 Dec	Air Canada
01 Dec - 08 Dec	Lufthansa
01 Dec - 10 Dec	Lufthansa
01 Dec - 07 Dec	Lufthansa
30 Dec - 13 Jan	Lufthansa
29 Dec - 10 Jan	TAP
30 Dec - 10 Jan	TAP
27 Dec - 01 Jan	TAP
27 Dec - 10 Jan	TAP
30 Dec - 06 Jan	Lufthansa
30 Dec - 13 Jan	Delta	direct
13 Dec - 17 Jan	Lufthansa
28 Dec - 11 Jan	Vueling Airlines
18 Dec - 06 Jan	TAP

Also check the deals for one-way flights from London to Los Angeles 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 Los Angeles in December from $480

Return flights