Cheapest return flights from San Diego to London in December from $861

Best time to book flights for San Diego (SAN) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from San Diego (SAN) to London (LGW) in December 2025 (see full year).

Return flights

02 Dec - 12 Dec Alaska Airlines
07 Dec - 14 Dec Alaska Airlines
25 Dec - 08 Jan Icelandair
08 Dec - 22 Dec Alaska Airlines
16 Dec - 04 Jan Alaska Airlines
22 Dec - 05 Jan Alaska Airlines
11 Dec - 25 Dec TAP

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

Skyscanner

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