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

Return flights

14 Apr - 20 Apr	Lufthansa
16 Apr - 20 Apr	Lufthansa
15 Apr - 22 Apr	Lufthansa
22 Apr - 29 Apr	Lufthansa
19 Apr - 26 Apr	Lufthansa
15 Apr - 20 Apr	Air Canada
13 Apr - 20 Apr	Air Canada
30 Apr - 10 May	Lufthansa
16 Apr - 26 Apr	Lufthansa
26 Apr - 11 May	Lufthansa
23 Apr - 04 May	Lufthansa
13 Apr - 22 Apr	Lufthansa
17 Apr - 23 Apr	Air Canada
24 Apr - 03 May	SWISS
23 Apr - 04 May	American Airlines	direct
30 Apr - 10 May	British Airways	direct
24 Apr - 03 May	British Airways	direct
24 Apr - 08 May	American Airlines
26 Apr - 11 May	British Airways	direct

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

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 April from 482€

Return flights