Cheapest return flights from San Francisco to London in December from 513€

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

Return flights

04 Dec - 13 Dec SWISS
01 Dec - 09 Dec Aer Lingus
02 Dec - 09 Dec Aer Lingus
02 Dec - 16 Dec SWISS
01 Dec - 10 Dec SWISS
04 Dec - 07 Dec SWISS
04 Dec - 09 Dec SWISS
28 Dec - 14 Jan SWISS
12 Dec - 24 Dec SWISS
02 Dec - 21 Dec SWISS
12 Dec - 12 Jan SWISS
29 Dec - 07 Jan SWISS
26 Dec - 08 Jan TAP
12 Dec - 28 Dec SWISS
16 Dec - 06 Jan SWISS
24 Dec - 07 Jan Alaska Airlines
23 Dec - 15 Jan SWISS
23 Dec - 06 Jan SWISS
23 Dec - 09 Jan SWISS
27 Dec - 04 Jan TAP

Also check the deals for one-way flights from San Francisco 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

Feel free to contact us with any feedback or request another flight research.