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

Return flights

04 Dec - 11 Dec	TAP
04 Dec - 10 Dec	TAP
02 Dec - 10 Dec	TAP
30 Dec - 14 Jan	TAP
11 Dec - 17 Dec	TAP
11 Dec - 31 Jan	TAP
02 Dec - 15 Dec	TAP
08 Dec - 16 Dec	Finnair
09 Dec - 15 Dec	TAP
06 Dec - 15 Dec	TAP
13 Dec - 21 Jan	TAP
06 Dec - 17 Jan	TAP
08 Dec - 23 Jan	Scandinavian Airlines
04 Dec - 18 Jan	Scandinavian Airlines
10 Dec - 18 Jan	Finnair
30 Dec - 12 Jan	TAP
07 Dec - 14 Dec	SWISS
05 Dec - 09 Dec	SWISS
09 Dec - 08 Jan	TAP
06 Dec - 08 Jan	TAP

Also check the deals for one-way flights from Los Angeles to London 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 Los Angeles to London in December from 365€

Return flights