AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LHR) in January 2026 (see full year).

One-Way flights

06 Jan	WestJet
11 Jan	WestJet
08 Jan	Air Canada
12 Jan	Alaska Airlines
06 Jan	British Airways	direct
07 Jan	Delta	direct
11 Jan	British Airways	direct
12 Jan	British Airways	direct
02 Jan	Virgin Atlantic	direct
15 Jan	Iberia	direct

Also check the deals for return flights from San Francisco 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.

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Cheapest one-way flights from San Francisco to London in January from 245€

One-Way flights