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

Return flights

07 Jan - 14 Jan	United
07 Jan - 14 Jan	British Airways	direct
27 Jan - 03 Feb	British Airways	direct
05 Jan - 15 Jan	British Airways
05 Jan - 27 Jan	KLM
06 Jan - 12 Jan	British Airways	direct
17 Jan - 24 Jan	British Airways	direct

Also check the deals for one-way flights from San Diego to London 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 San Diego to London in January from 565€

Return flights