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

Return flights

09 Dec - 13 Jan	TAP
06 Dec - 17 Jan	TAP
06 Dec - 11 Dec	TAP
03 Dec - 11 Dec	TAP
03 Dec - 09 Dec	TAP
04 Dec - 11 Dec	TAP
04 Dec - 09 Dec	TAP
05 Dec - 09 Dec	TAP
05 Dec - 11 Dec	TAP
05 Dec - 08 Dec	Scandinavian Airlines
04 Dec - 08 Dec	Scandinavian Airlines
05 Dec - 07 Dec	Scandinavian Airlines
15 Dec - 13 Jan	TAP
25 Dec - 13 Jan	TAP
10 Dec - 14 Jan	Scandinavian Airlines
11 Dec - 08 Jan	TAP
09 Dec - 08 Jan	TAP
10 Dec - 10 Jan	TAP
22 Dec - 05 Jan	Virgin Atlantic
28 Dec - 05 Jan	Virgin Atlantic

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 436€

Return flights