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

Return flights

10 Oct - 17 Oct	Air Canada
16 Oct - 18 Oct	Air Canada
20 Oct - 26 Oct	Lufthansa
12 Oct - 15 Oct	Iberia	direct
22 Oct - 01 Nov	Lufthansa
20 Oct - 26 Oct	British Airways	direct
19 Oct - 25 Oct	Lufthansa
10 Oct - 17 Oct	British Airways	direct
15 Oct - 18 Oct	American Airlines	direct
19 Oct - 25 Oct	British Airways	direct
22 Oct - 01 Nov	British Airways	direct
20 Oct - 20 Oct	Lufthansa

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

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 October from 547€

Return flights