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

Return flights

02 May - 02 May	Lufthansa
06 May - 13 May	Finnair
13 May - 20 May	Finnair
08 May - 11 May	Air Canada
01 May - 13 May	SWISS
01 May - 10 May	SWISS
04 May - 11 May	SWISS
05 May - 12 May	Lufthansa
05 May - 14 May	Lufthansa
02 May - 12 May	Lufthansa
13 May - 09 Jun	Finnair
13 May - 09 Jun	British Airways	direct
20 May - 03 Jun	Finnair
20 May - 10 Jun	Finnair
28 May - 07 Jun	SWISS
27 May - 05 Jun	SWISS
19 May - 02 Jun	British Airways	direct
19 May - 09 Jun	British Airways	direct
19 May - 01 Jun	British Airways	direct
20 May - 03 Jun	British Airways	direct

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

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 May from 263€

Return flights