Cheapest one-way flights from San Francisco to London in December from $213

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

One-Way flights

06 Dec Flair Airlines
04 Dec Flair Airlines
02 Dec WestJet
07 Dec Flair Airlines
09 Dec Flair Airlines
03 Dec Air Canada
05 Dec Air Canada
10 Dec Air Canada
12 Dec Alaska Airlines
29 Dec Alaska Airlines

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.

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