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

Return flights

28 Jan - 06 Feb	Lufthansa
30 Jan - 05 Feb	Lufthansa
27 Jan - 02 Feb	Frontier Airlines
23 Jan - 30 Jan	Alaska Airlines
23 Jan - 01 Feb	Frontier Airlines
22 Jan - 29 Jan	Frontier Airlines
24 Jan - 31 Jan	Frontier Airlines
23 Jan - 26 Jan	Lufthansa
22 Jan - 25 Jan	Hawaiian Airlines
31 Jan - 03 Feb	Air Canada

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 $675

Return flights