Cheapest one-way flights from San Francisco to London in December from 311€

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

One-Way flights

15 Dec Alaska Airlines
17 Dec Sun Country Airlines
31 Dec SWISS
16 Dec Alaska Airlines
26 Dec TAP
23 Dec SWISS
25 Dec FrenchBee
18 Dec Sun Country Airlines
19 Dec WestJet

Also check the deals for return 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.