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

Return flights

23 Jan - 24 Jan	Lufthansa
31 Jan - 01 Feb	Lufthansa
30 Jan - 03 Feb	Lufthansa
30 Jan - 02 Feb	Lufthansa
30 Jan - 01 Feb	Lufthansa
30 Jan - 31 Jan	Lufthansa
29 Jan - 31 Jan	Lufthansa
24 Jan - 26 Jan	Lufthansa
31 Jan - 23 Feb	Lufthansa
30 Jan - 09 Feb	Lufthansa
30 Jan - 08 Feb	Lufthansa
29 Jan - 02 Feb	Lufthansa
29 Jan - 03 Feb	Lufthansa
26 Jan - 06 Feb	SWISS
22 Jan - 27 Jan	Air Canada
21 Jan - 25 Jan	Air Canada
23 Jan - 30 Jan	Air Canada
23 Jan - 27 Jan	Air Canada
23 Jan - 25 Jan	Air Canada
23 Jan - 26 Jan	Air Canada

Also check the deals for one-way flights from London to San Diego in January.

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 January from 301€

Return flights