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

Return flights

12 Mar - 14 Mar	Lufthansa
05 Mar - 16 Mar	Lufthansa
04 Mar - 09 Mar	Lufthansa
03 Mar - 10 Mar	Lufthansa
11 Mar - 23 Mar	Lufthansa
04 Mar - 16 Mar	Lufthansa
12 Mar - 16 Mar	jetBlue
01 Mar - 06 Mar	jetBlue
04 Mar - 11 Mar	jetBlue
15 Mar - 18 Mar	jetBlue
19 Mar - 02 Apr	Lufthansa
18 Mar - 06 Apr	British Airways
18 Mar - 01 Apr	Lufthansa
16 Mar - 01 Apr	Finnair
31 Mar - 07 Apr	Icelandair
24 Mar - 14 Apr	Lufthansa
31 Mar - 15 Apr	British Airways
31 Mar - 03 Apr	KLM
28 Mar - 21 Apr	Virgin Atlantic
18 Mar - 06 Apr	Finnair	direct

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

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 March from 450€

Return flights