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

Return flights

14 Jan - 04 Feb	Lufthansa
27 Jan - 17 Feb	Lufthansa
30 Jan - 01 Feb	Frontier Airlines
26 Jan - 02 Feb	Frontier Airlines
30 Jan - 06 Feb	jetBlue
26 Jan - 09 Feb	jetBlue
24 Jan - 31 Jan	jetBlue
24 Jan - 30 Jan	jetBlue
31 Jan - 11 Feb	jetBlue
14 Jan - 25 Jan	Lufthansa
27 Jan - 17 Feb	British Airways	direct
16 Jan - 22 Jan	Lufthansa
13 Jan - 19 Jan	Lufthansa
28 Jan - 15 Feb	Lufthansa
30 Jan - 06 Feb	British Airways	direct
24 Jan - 28 Jan	Scandinavian Airlines
10 Jan - 26 Jan	Scandinavian Airlines
08 Jan - 15 Jan	jetBlue
06 Jan - 12 Jan	jetBlue
13 Jan - 16 Jan	Hawaiian Airlines

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from San Diego to London in January from $611

Return flights