AirHint found the following cheapest return flights from London (LON) to San Diego (SAN) in December 2026 (see full year).

Return flights

09 Dec - 14 Dec	Lufthansa
09 Dec - 14 Dec	British Airways	direct
30 Dec - 06 Jan	Lufthansa
30 Dec - 06 Jan	Finnair	direct
09 Dec - 19 Dec	Lufthansa
09 Dec - 19 Dec	British Airways	direct
27 Dec - 02 Jan	Lufthansa
23 Dec - 03 Jan	Lufthansa
27 Dec - 02 Jan	Finnair	direct
18 Dec - 02 Jan	Lufthansa
19 Dec - 30 Dec	Lufthansa
19 Dec - 01 Jan	Lufthansa
23 Dec - 03 Jan	Finnair	direct
18 Dec - 02 Jan	Finnair	direct
23 Dec - 30 Dec	Finnair	direct
19 Dec - 01 Jan	Finnair	direct
19 Dec - 30 Dec	British Airways	direct

Also check the deals for one-way flights from London to San Diego 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 San Diego in December from 529€

Return flights