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

Return flights

01 Dec - 07 Dec	SWISS
24 Dec - 06 Jan	TAP
17 Dec - 06 Jan	TAP
17 Dec - 03 Jan	TAP
02 Dec - 09 Dec	SWISS
04 Dec - 09 Dec	SWISS
15 Dec - 30 Dec	TAP
24 Dec - 30 Dec	TAP
01 Dec - 09 Dec	TAP
29 Dec - 03 Jan	TAP
24 Dec - 03 Jan	TAP
22 Dec - 03 Jan	TAP
22 Dec - 27 Dec	TAP
22 Dec - 30 Dec	TAP
08 Dec - 16 Dec	TAP
10 Dec - 17 Dec	SWISS
26 Dec - 17 Jan	TAP
12 Dec - 08 Jan	TAP
13 Dec - 20 Jan	Iberia For Level
15 Dec - 01 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 $546

Return flights